John C. DeFries - Publications

Affiliations: 
Psychology University of Colorado, Boulder, Boulder, CO, United States 
Area:
Behavior Genetics
Website:
http://ibgwww.colorado.edu/~defries/

268 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any innacuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2019 Truong DT, Adams AK, Paniagua S, Frijters JC, Boada R, Hill DE, Lovett MW, Mahone EM, Willcutt EG, Wolf M, Defries JC, Gialluisi A, Francks C, Fisher SE, Olson RK, et al. Multivariate genome-wide association study of rapid automatised naming and rapid alternating stimulus in Hispanic American and African-American youth. Journal of Medical Genetics. PMID 30995994 DOI: 10.1136/jmedgenet-2018-105874  0.4
2019 Gialluisi A, Andlauer TFM, Mirza-Schreiber N, Moll K, Becker J, Hoffmann P, Ludwig KU, Czamara D, St Pourcain B, Brandler W, Honbolygó F, Tóth D, Csépe V, Huguet G, Morris AP, ... ... DeFries JC, et al. Genome-wide association scan identifies new variants associated with a cognitive predictor of dyslexia. Translational Psychiatry. 9: 77. PMID 30741946 DOI: 10.1038/s41398-019-0402-0  0.4
2017 Ricker AA, Corley R, DeFries JC, Wadsworth SJ, Reynolds CA. Examining the Influence of Perceived Stress on Developmental Change in Memory and Perceptual Speed for Adopted and Nonadopted Individuals. Developmental Psychology. PMID 28981301 DOI: 10.1037/dev0000329  0.48
2017 Adams AK, Smith SD, Truong DT, Willcutt EG, Olson RK, DeFries JC, Pennington BF, Gruen JR. Enrichment of putatively damaging rare variants in the DYX2 locus and the reading-related genes CCDC136 and FLNC. Human Genetics. PMID 28866788 DOI: 10.1007/s00439-017-1838-z  0.4
2017 Selzam S, Dale PS, Wagner RK, DeFries JC, Cederlöf M, O'Reilly PF, Krapohl E, Plomin R. Genome-Wide Polygenic Scores Predict Reading Performance Throughout the School Years. Scientific Studies of Reading : the Official Journal of the Society For the Scientific Study of Reading. 21: 334-349. PMID 28706435 DOI: 10.1080/10888438.2017.1299152  0.68
2017 Ayorech Z, Selzam S, Smith-Woolley E, Knopik VS, Neiderhiser JM, DeFries JC, Plomin R. Erratum to: Publication Trends Over 55 Years of Behavioral Genetic Research. Behavior Genetics. PMID 28474239 DOI: 10.1007/s10519-017-9849-z  0.92
2017 Arnett AB, Pennington BF, Peterson RL, Willcutt EG, DeFries JC, Olson RK. Explaining the sex difference in dyslexia. Journal of Child Psychology and Psychiatry, and Allied Disciplines. PMID 28176347 DOI: 10.1111/jcpp.12691  0.4
2016 Wadsworth SJ, DeFries JC, Willcutt EG, Pennington BF, Olson RK. Genetic Etiologies of Comorbidity and Stability for Reading Difficulties and ADHD: A Replication Study. Twin Research and Human Genetics : the Official Journal of the International Society For Twin Studies. 1-5. PMID 27748217 DOI: 10.1017/thg.2016.80  0.48
2016 Gialluisi A, Visconti A, Willcutt EG, Smith SD, Pennington BF, Falchi M, DeFries JC, Olson RK, Francks C, Fisher SE. Investigating the effects of copy number variants on reading and language performance. Journal of Neurodevelopmental Disorders. 8: 17. PMID 27186239 DOI: 10.1186/s11689-016-9147-8  0.4
2016 Huibregtse BM, Corley RP, Wadsworth SJ, Vandever JM, DeFries JC, Stallings MC. A Longitudinal Adoption Study of Substance Use Behavior in Adolescence. Twin Research and Human Genetics : the Official Journal of the International Society For Twin Studies. 1-11. PMID 27161024 DOI: 10.1017/thg.2016.35  1
2016 Ayorech Z, Selzam S, Smith-Woolley E, Knopik VS, Neiderhiser JM, DeFries JC, Plomin R. Publication Trends Over 55 Years of Behavioral Genetic Research. Behavior Genetics. PMID 26992731 DOI: 10.1007/s10519-016-9786-2  1
2016 Christopher ME, Keenan JM, Hulslander J, DeFries JC, Miyake A, Wadsworth SJ, Willcutt E, Pennington B, Olson RK. The genetic and environmental etiologies of the relations between cognitive skills and components of reading ability. Journal of Experimental Psychology. General. 145: 451-466. PMID 26974208 DOI: 10.1037/xge0000146  1
2016 Plomin R, DeFries JC, Knopik VS, Neiderhiser JM. Top 10 Replicated Findings From Behavioral Genetics. Perspectives On Psychological Science : a Journal of the Association For Psychological Science. 11: 3-23. PMID 26817721 DOI: 10.1177/1745691615617439  0.44
2015 Wadsworth SJ, DeFries JC, Willcutt EG, Pennington BF, Olson RK. The Colorado Longitudinal Twin Study of Reading Difficulties and ADHD: Etiologies of Comorbidity and Stability. Twin Research and Human Genetics : the Official Journal of the International Society For Twin Studies. 1-7. PMID 26537134 DOI: 10.1017/thg.2015.66  0.44
2015 Arnett AB, Pennington BF, Willcutt EG, DeFries JC, Olson RK. Sex differences in ADHD symptom severity. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 56: 632-9. PMID 25283790 DOI: 10.1111/jcpp.12337  0.44
2015 Christopher ME, Hulslander J, Byrne B, Samuelsson S, Keenan JM, Pennington B, DeFries JC, Wadsworth SJ, Willcutt E, Olson RK. Genetic and environmental etiologies of the longitudinal relations between prereading skills and reading. Child Development. 86: 342-61. PMID 25263167 DOI: 10.1111/cdev.12295  0.44
2014 Gialluisi A, Newbury DF, Wilcutt EG, Olson RK, DeFries JC, Brandler WM, Pennington BF, Smith SD, Scerri TS, Simpson NH, Luciano M, Evans DM, Bates TC, Stein JF, et al. Genome-wide screening for DNA variants associated with reading and language traits. Genes, Brain, and Behavior. 13: 686-701. PMID 25065397 DOI: 10.1111/gbb.12158  1
2014 Eicher JD, Powers NR, Miller LL, Mueller KL, Mascheretti S, Marino C, Willcutt EG, DeFries JC, Olson RK, Smith SD, Pennington BF, Tomblin JB, Ring SM, Gruen JR. Characterization of the DYX2 locus on chromosome 6p22 with reading disability, language impairment, and IQ. Human Genetics. 133: 869-81. PMID 24509779 DOI: 10.1007/s00439-014-1427-3  0.44
2014 Willcutt EG, Chhabildas N, Kinnear M, DeFries JC, Olson RK, Leopold DR, Keenan JM, Pennington BF. The internal and external validity of sluggish cognitive tempo and its relation with DSM-IV ADHD. Journal of Abnormal Child Psychology. 42: 21-35. PMID 24122408 DOI: 10.1007/s10802-013-9800-6  0.44
2014 Power RA, Nagoshi C, DeFries JC, Plomin R. Genome-wide estimates of inbreeding in unrelated individuals and their association with cognitive ability. European Journal of Human Genetics : Ejhg. 22: 386-90. PMID 23860046 DOI: 10.1038/ejhg.2013.155  0.44
2013 Christopher ME, Hulslander J, Byrne B, Samuelsson S, Keenan JM, Pennington B, Defries JC, Wadsworth SJ, Willcutt E, Olson RK. Modeling the Etiology of Individual Differences in Early Reading Development: Evidence for Strong Genetic Influences. Scientific Studies of Reading : the Official Journal of the Society For the Scientific Study of Reading. 17: 350-368. PMID 24489459 DOI: 10.1080/10888438.2012.729119  0.44
2013 Fujisawa KK, Wadsworth SJ, Kakihana S, Olson RK, Defries JC, Byrne B, Ando J. A multivariate twin study of early literacy in Japanese Kana. Learning and Individual Differences. 24: 160-167. PMID 23997545 DOI: 10.1016/j.lindif.2012.12.018  0.44
2013 Rhea SA, Bricker JB, Corley RP, Defries JC, Wadsworth SJ. Design, Utility, and History of the Colorado Adoption Project: Examples Involving Adjustment Interactions. Adoption Quarterly. 16: 17-39. PMID 23833552 DOI: 10.1080/10926755.2012.754810  0.44
2013 Brant AM, Munakata Y, Boomsma DI, Defries JC, Haworth CM, Keller MC, Martin NG, McGue M, Petrill SA, Plomin R, Wadsworth SJ, Wright MJ, Hewitt JK. The nature and nurture of high IQ: an extended sensitive period for intellectual development. Psychological Science. 24: 1487-95. PMID 23818653 DOI: 10.1177/0956797612473119  0.44
2013 Christopher ME, Hulslander J, Byrne B, Samuelsson S, Keenan JM, Pennington B, Defries JC, Wadsworth SJ, Willcutt E, Olson RK. The genetic and environmental etiologies of individual differences in early reading growth in Australia, the United States, and Scandinavia. Journal of Experimental Child Psychology. 115: 453-67. PMID 23665180 DOI: 10.1016/j.jecp.2013.03.008  0.44
2013 Trzaskowski M, Davis OS, DeFries JC, Yang J, Visscher PM, Plomin R. DNA evidence for strong genome-wide pleiotropy of cognitive and learning abilities. Behavior Genetics. 43: 267-73. PMID 23609157 DOI: 10.1007/s10519-013-9594-x  0.44
2013 Willcutt EG, Petrill SA, Wu S, Boada R, Defries JC, Olson RK, Pennington BF. Comorbidity between reading disability and math disability: concurrent psychopathology, functional impairment, and neuropsychological functioning. Journal of Learning Disabilities. 46: 500-16. PMID 23449727 DOI: 10.1177/0022219413477476  0.44
2013 Olson RK, Hulslander J, Christopher M, Keenan JM, Wadsworth SJ, Willcutt EG, Pennington BF, DeFries JC. Genetic and environmental influences on writing and their relations to language and reading. Annals of Dyslexia. 63: 25-43. PMID 21842316 DOI: 10.1007/s11881-011-0055-z  0.44
2012 Astrom RL, Wadsworth SJ, Olson RK, Willcutt EG, Defries JC. Genetic and environmental etiologies of reading difficulties: DeFries-Fulker analysis of reading performance data from twin pairs and their nontwin siblings. Learning and Individual Differences. 22: 365-369. PMID 22927712 DOI: 10.1016/j.lindif.2012.01.011  0.44
2012 Wadsworth SJ, Olson RK, Willcutt EG, DeFries JC. Multiple regression analysis of reading performance data from twin pairs with reading difficulties and nontwin siblings: the augmented model. Twin Research and Human Genetics : the Official Journal of the International Society For Twin Studies. 15: 116-9. PMID 22784461 DOI: 10.1375/twin.15.1.116  0.44
2012 Christopher ME, Miyake A, Keenan JM, Pennington B, DeFries JC, Wadsworth SJ, Willcutt E, Olson RK. Predicting word reading and comprehension with executive function and speed measures across development: a latent variable analysis. Journal of Experimental Psychology. General. 141: 470-88. PMID 22352396 DOI: 10.1037/a0027375  0.44
2012 Petrill SA, Plomin R, DeFries JC, Hewitt JK. Conclusions Nature, Nurture, and the Transition to Early Adolescence. DOI: 10.1093/acprof:oso/9780195157475.003.0019  0.44
2012 Wadsworth SJ, DeFries JC. Etiology of the Stability of Reading Performance from 7 to 12 Years of Age and Its Possible Mediation by IQ Nature, Nurture, and the Transition to Early Adolescence. DOI: 10.1093/acprof:oso/9780195157475.003.0004  0.44
2012 Alarcón M, Plomin R, Corley RP, DeFries JC. Multivariate Parent-Offspring Analyses of Specific Cognitive Abilities Nature, Nurture, and the Transition to Early Adolescence. DOI: 10.1093/acprof:oso/9780195157475.003.0003  0.44
2012 Petrill SA, Plomin R, DeFries JC, Hewitt JK. Nature, Nurture, and Adolescent Development: An Introduction Nature, Nurture, and the Transition to Early Adolescence. DOI: 10.1093/acprof:oso/9780195157475.003.0001  0.44
2012 Petrill SA, Plomin R, DeFries JC, Hewitt JK. Nature, Nurture, and the Transition to Early Adolescence Nature, Nurture, and the Transition to Early Adolescence. 1-342. DOI: 10.1093/acprof:oso/9780195157475.001.0001  0.44
2011 Nilsson R, Rhee SH, Corley RP, Rhea SA, Wadsworth SJ, Defries JC. Conduct Problems in Adopted and Non-adopted Adolescents and Adoption Satisfaction as a Protective Factor. Adoption Quarterly. 14: 181-198. PMID 22259226 DOI: 10.1080/10926755.2011.608030  0.44
2011 Betjemann RS, Keenan JM, Olson RK, Defries JC. Choice of Reading Comprehension Test Influences the Outcomes of Genetic Analyses. Scientific Studies of Reading : the Official Journal of the Society For the Scientific Study of Reading. 15: 363-382. PMID 21804757 DOI: 10.1080/10888438.2010.493965  0.44
2011 Willcutt EG, Boada R, Riddle MW, Chhabildas N, DeFries JC, Pennington BF. Colorado Learning Difficulties Questionnaire: validation of a parent-report screening measure. Psychological Assessment. 23: 778-91. PMID 21574721 DOI: 10.1037/a0023290  0.44
2011 Astrom RL, Wadsworth SJ, Olson RK, Willcutt EG, DeFries JC. DeFries-Fulker analysis of longitudinal reading performance data from twin pairs ascertained for reading difficulties and from their nontwin siblings. Behavior Genetics. 41: 660-7. PMID 21259040 DOI: 10.1007/s10519-011-9445-6  1
2011 Bidwell LC, Willcutt EG, McQueen MB, DeFries JC, Olson RK, Smith SD, Pennington BF. A family based association study of DRD4, DAT1, and 5HTT and continuous traits of attention-deficit hyperactivity disorder. Behavior Genetics. 41: 165-74. PMID 21207241 DOI: 10.1007/s10519-010-9437-y  1
2011 Olson RK, Keenan JM, Byrne B, Samuelsson S, Coventry WL, Corley R, Wadsworth SJ, Willcutt EG, Defries JC, Pennington BF, Hulslander J. Genetic and Environmental Influences on Vocabulary and Reading Development. Scientific Studies of Reading : the Official Journal of the Society For the Scientific Study of Reading. 15: 26-46. PMID 21132077 DOI: 10.1007/s11145-006-9018-x  1
2011 McGrath LM, Pennington BF, Shanahan MA, Santerre-Lemmon LE, Barnard HD, Willcutt EG, Defries JC, Olson RK. A multiple deficit model of reading disability and attention-deficit/hyperactivity disorder: searching for shared cognitive deficits. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 52: 547-57. PMID 21126246 DOI: 10.1111/j.1469-7610.2010.02346.x  0.44
2010 Scerri TS, Paracchini S, Morris A, MacPhie IL, Talcott J, Stein J, Smith SD, Pennington BF, Olson RK, DeFries JC, Monaco AP, Richardson AJ. Identification of candidate genes for dyslexia susceptibility on chromosome 18. Plos One. 5: e13712. PMID 21060895 DOI: 10.1371/journal.pone.0013712  1
2010 Willcutt EG, Betjemann RS, McGrath LM, Chhabildas NA, Olson RK, DeFries JC, Pennington BF. Etiology and neuropsychology of comorbidity between RD and ADHD: the case for multiple-deficit models. Cortex; a Journal Devoted to the Study of the Nervous System and Behavior. 46: 1345-61. PMID 20828676 DOI: 10.1016/j.cortex.2010.06.009  1
2010 Smith SD, Grigorenko E, Willcutt E, Pennington BF, Olson RK, DeFries JC. Etiologies and molecular mechanisms of communication disorders. Journal of Developmental and Behavioral Pediatrics : Jdbp. 31: 555-63. PMID 20814255 DOI: 10.1097/DBP.0b013e3181ee3d9e  1
2010 Willcutt EG, Pennington BF, Duncan L, Smith SD, Keenan JM, Wadsworth S, Defries JC, Olson RK. Understanding the complex etiologies of developmental disorders: behavioral and molecular genetic approaches. Journal of Developmental and Behavioral Pediatrics : Jdbp. 31: 533-44. PMID 20814254 DOI: 10.1097/DBP.0b013e3181ef42a1  1
2010 Wadsworth SJ, Olson RK, DeFries JC. Differential genetic etiology of reading difficulties as a function of IQ: an update. Behavior Genetics. 40: 751-8. PMID 20333543 DOI: 10.1007/s10519-010-9349-x  1
2010 Betjemann RS, Johnson EP, Barnard H, Boada R, Filley CM, Filipek PA, Willcutt EG, DeFries JC, Pennington BF. Genetic covariation between brain volumes and IQ, reading performance, and processing speed. Behavior Genetics. 40: 135-45. PMID 20072853 DOI: 10.1007/s10519-009-9328-2  1
2010 DeFries JC. Haseman and Elston sib-pair linkage analysis: a brief historical note. Behavior Genetics. 40: 1-2. PMID 19707863 DOI: 10.1007/s10519-009-9295-7  1
2010 Haworth CM, Wright MJ, Luciano M, Martin NG, de Geus EJ, van Beijsterveldt CE, Bartels M, Posthuma D, Boomsma DI, Davis OS, Kovas Y, Corley RP, Defries JC, Hewitt JK, Olson RK, et al. The heritability of general cognitive ability increases linearly from childhood to young adulthood. Molecular Psychiatry. 15: 1112-20. PMID 19488046 DOI: 10.1038/mp.2009.55  1
2009 Byrne B, Coventry WL, Olson RK, Samuelsson S, Corley R, Willcutt EG, Wadsworth S, Defries JC. Genetic and Environmental Influences on Aspects of Literacy and Language in Early Childhood: Continuity and Change from Preschool to Grade 2. Journal of Neurolinguistics. 22: 219-236. PMID 20161176 DOI: 10.1016/j.jneuroling.2008.09.003  1
2009 Brant AM, Haberstick BC, Corley RP, Wadsworth SJ, DeFries JC, Hewitt JK. The developmental etiology of high IQ. Behavior Genetics. 39: 393-405. PMID 19377873 DOI: 10.1007/s10519-009-9268-x  1
2009 Hawke JL, Olson RK, Willcut EG, Wadsworth SJ, DeFries JC. Gender ratios for reading difficulties. Dyslexia (Chichester, England). 15: 239-42. PMID 19367616 DOI: 10.1002/dys.389  1
2009 Friend A, DeFries JC, Olson RK, Pennington B, Harlaar N, Byrne B, Samuelsson S, Willcutt EG, Wadsworth SJ, Corley R, Keenan JM. Heritability of high reading ability and its interaction with parental education. Behavior Genetics. 39: 427-36. PMID 19296213 DOI: 10.1007/s10519-009-9263-2  1
2009 Pennington BF, McGrath LM, Rosenberg J, Barnard H, Smith SD, Willcutt EG, Friend A, Defries JC, Olson RK. Gene X environment interactions in reading disability and attention-deficit/hyperactivity disorder. Developmental Psychology. 45: 77-89. PMID 19209992 DOI: 10.1037/a0014549  1
2008 Samuelsson S, Byrne B, Olson RK, Hulslander J, Wadsworth S, Corley R, Willcutt EG, Defries JC. Response to early literacy instruction in the United States, Australia, and Scandinavia: A behavioral-genetic analysis. Learning and Individual Differences. 18: 289-295. PMID 19122888 DOI: 10.1016/j.lindif.2008.03.004  1
2008 Friend A, DeFries JC, Olson RK. Parental education moderates genetic influences on reading disability. Psychological Science. 19: 1124-30. PMID 19076484 DOI: 10.1111/j.1467-9280.2008.02213.x  1
2008 Friedman NP, Miyake A, Young SE, Defries JC, Corley RP, Hewitt JK. Individual differences in executive functions are almost entirely genetic in origin. Journal of Experimental Psychology. General. 137: 201-25. PMID 18473654 DOI: 10.1037/0096-3445.137.2.201  1
2008 Hawke JL, Stallings MC, Wadsworth SJ, DeFries JC. DeFries-Fulker and Pearson-Aitken model-fitting analyses of reading performance data from selected and unselected twin pairs. Behavior Genetics. 38: 101-7. PMID 18213514 DOI: 10.1007/s10519-008-9189-0  1
2008 Rhee SH, Willcutt EG, Hartman CA, Pennington BF, DeFries JC. Test of alternative hypotheses explaining the comorbidity between attention-deficit/hyperactivity disorder and conduct disorder. Journal of Abnormal Child Psychology. 36: 29-40. PMID 17636436 DOI: 10.1007/s10802-007-9157-9  1
2008 Byrne B, Coventry WL, Olson RK, Hulslander J, Wadsworth S, Defries JC, Corley R, Willcutt EG, Samuelsson S. A behaviour-genetic analysis of orthographic learning, spelling and decoding Journal of Research in Reading. 31: 8-21. DOI: 10.1111/j.1467-9817.2007.00358.x  1
2008 Betjemann RS, Willcutt EG, Olson RK, Keenan JM, Defries JC, Wadsworth SJ. Word reading and reading comprehension: Stability, overlap and independence Reading and Writing. 21: 539-558. DOI: 10.1007/s11145-007-9076-8  1
2007 Wadsworth SJ, DeFries JC, Olson RK, Willcutt EG. Colorado longitudinal twin study of reading disability. Annals of Dyslexia. 57: 139-60. PMID 18060583 DOI: 10.1007/s11881-007-0009-7  1
2007 Bidwell LC, Willcutt EG, Defries JC, Pennington BF. Testing for neuropsychological endophenotypes in siblings discordant for attention-deficit/hyperactivity disorder. Biological Psychiatry. 62: 991-8. PMID 17585884 DOI: 10.1016/j.biopsych.2007.04.003  1
2007 Astrom RL, Wadsworth SJ, DeFries JC. Etiology of the stability of reading difficulties: the longitudinal twin study of reading disabilities. Twin Research and Human Genetics : the Official Journal of the International Society For Twin Studies. 10: 434-9. PMID 17564501 DOI: 10.1375/twin.10.3.434  1
2007 Willcutt EG, Pennington BF, Olson RK, DeFries JC. Understanding comorbidity: a twin study of reading disability and attention-deficit/hyperactivity disorder. American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics : the Official Publication of the International Society of Psychiatric Genetics. 144: 709-14. PMID 17440942 DOI: 10.1002/ajmg.b.30310  1
2007 Friend A, DeFries JC, Wadsworth SJ, Olson RK. Genetic and environmental influences on word recognition and spelling deficits as a function of age. Behavior Genetics. 37: 477-86. PMID 17345157 DOI: 10.1007/s10519-007-9145-4  1
2007 Willcutt EG, Betjemann RS, Wadsworth SJ, Samuelsson S, Corley R, Defries JC, Byrne B, Pennington BF, Olson RK. Preschool twin study of the relation between attention-deficit/ hyperactivity disorder and prereading skills Reading and Writing. 20: 103-125. DOI: 10.1007/s11145-006-9020-3  1
2007 Byrne B, Samuelsson S, Wadsworth S, Hulslander J, Corley R, Defries JC, Quain P, Willcutt EG, Olson RK. Longitudinal twin study of early literacy development: Preschool through Grade 1 Reading and Writing. 20: 77-102. DOI: 10.1007/s11145-006-9019-9  1
2007 Hawke JL, Wadsworth SJ, Olson RK, Defries JC. Etiology of reading difficulties as a function of gender and severity Reading and Writing. 20: 13-25. DOI: 10.1007/s11145-006-9016-z  1
2006 Shanahan MA, Pennington BF, Yerys BE, Scott A, Boada R, Willcutt EG, Olson RK, DeFries JC. Processing speed deficits in attention deficit/hyperactivity disorder and reading disability. Journal of Abnormal Child Psychology. 34: 585-602. PMID 16850284 DOI: 10.1007/s10802-006-9037-8  0.44
2006 Bricker JB, Stallings MC, Corley RP, Wadsworth SJ, Bryan A, Timberlake DS, Hewitt JK, Caspi A, Hofer SM, Rhea SA, DeFries JC. Genetic and environmental influences on age at sexual initiation in the Colorado Adoption Project. Behavior Genetics. 36: 820-32. PMID 16710776 DOI: 10.1007/s10519-006-9079-2  1
2006 Hawke JL, Wadsworth SJ, DeFries JC. Genetic influences on reading difficulties in boys and girls: the Colorado twin study. Dyslexia (Chichester, England). 12: 21-9. PMID 16512171 DOI: 10.1002/dys.301  1
2006 Friedman NP, Miyake A, Corley RP, Young SE, Defries JC, Hewitt JK. Not all executive functions are related to intelligence. Psychological Science. 17: 172-9. PMID 16466426 DOI: 10.1111/j.1467-9280.2006.01681.x  1
2006 Keenan JM, Betjemann RS, Wadsworth SJ, Defries JC, Olson RK. Genetic and environmental influences on reading and listening comprehension Journal of Research in Reading. 29: 75-91. DOI: 10.1111/j.1467-9817.2006.00293.x  1
2006 Byrne B, Olson RK, Samuelsson S, Wadsworth S, Corley R, Defries JC, Willcutt E. Genetic and environmental influences on early literacy Journal of Research in Reading. 29: 33-49. DOI: 10.1111/j.1467-9817.2006.00291.x  1
2006 Wadsworth SJ, Corley R, Plomin R, Hewitt JK, Defries JC. Genetic and environmental influences on continuity and change in reading achievement in the colorado adoption project Developmental Contexts in Middle Childhood: Bridges to Adolescence and Adulthood. 87-106. DOI: 10.1017/CBO9780511499760.006  0.44
2005 Wadsworth SJ, DeFries JC. Genetic etiology of reading difficulties in boys and girls. Twin Research and Human Genetics : the Official Journal of the International Society For Twin Studies. 8: 594-601. PMID 16354501 DOI: 10.1375/183242705774860196  1
2005 Meng H, Smith SD, Hager K, Held M, Liu J, Olson RK, Pennington BF, DeFries JC, Gelernter J, O'Reilly-Pol T, Somlo S, Skudlarski P, Shaywitz SE, Shaywitz BA, Marchione K, et al. DCDC2 is associated with reading disability and modulates neuronal development in the brain. Proceedings of the National Academy of Sciences of the United States of America. 102: 17053-8. PMID 16278297 DOI: 10.1073/pnas.0508591102  0.4
2005 Gayán J, Willcutt EG, Fisher SE, Francks C, Cardon LR, Olson RK, Pennington BF, Smith SD, Monaco AP, DeFries JC. Bivariate linkage scan for reading disability and attention-deficit/hyperactivity disorder localizes pleiotropic loci. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 46: 1045-56. PMID 16178928 DOI: 10.1111/j.1469-7610.2005.01447.x  1
2005 Meng H, Hager K, Held M, Page GP, Olson RK, Pennington BF, DeFries JC, Smith SD, Gruen JR. TDT-association analysis of EKN1 and dyslexia in a Colorado twin cohort. Human Genetics. 118: 87-90. PMID 16133186 DOI: 10.1007/s00439-005-0017-9  1
2005 Byrne B, Wadsworth S, Corley R, Samuelsson S, Quain P, Defries JC, Willcutt E, Olson RK. Longitudinal twin study of early literacy development: Preschool and kindergarten phases Scientific Studies of Reading. 9: 219-235. DOI: 10.1207/s1532799xssr0903_3  1
2005 Samuelsson S, Byrne B, Quain P, Wadsworth S, Corley R, DeFries JC, Willcutt E, Olson R. Environmental and genetic influences on prereading skills in Australia, Scandinavia, and the United States Journal of Educational Psychology. 97: 705-722. DOI: 10.1037/0022-0663.97.4.705  1
2004 Francks C, Paracchini S, Smith SD, Richardson AJ, Scerri TS, Cardon LR, Marlow AJ, MacPhie IL, Walter J, Pennington BF, Fisher SE, Olson RK, DeFries JC, Stein JF, Monaco AP. A 77-kilobase region of chromosome 6p22.2 is associated with dyslexia in families from the United Kingdom and from the United States. American Journal of Human Genetics. 75: 1046-58. PMID 15514892 DOI: 10.1086/426404  1
2004 Williams RW, Bennett B, Lu L, Gu J, DeFries JC, Carosone-Link PJ, Rikke BA, Belknap JK, Johnson TE. Genetic structure of the LXS panel of recombinant inbred mouse strains: a powerful resource for complex trait analysis. Mammalian Genome : Official Journal of the International Mammalian Genome Society. 15: 637-47. PMID 15457343 DOI: 10.1007/s00335-004-2380-6  1
2004 Petrill SA, Lipton PA, Hewitt JK, Plomin R, Cherny SS, Corley R, DeFries JC. Genetic and environmental contributions to general cognitive ability through the first 16 years of life. Developmental Psychology. 40: 805-12. PMID 15355167 DOI: 10.1037/0012-1649.40.5.805  1
2004 Hulslander J, Talcott J, Witton C, DeFries J, Pennington B, Wadsworth S, Willcutt E, Olson R. Sensory processing, reading, IQ, and attention Journal of Experimental Child Psychology. 88: 274-295. PMID 15203301 DOI: 10.1016/j.jecp.2004.03.006  1
2004 Tiu RD, Wadsworth SJ, Olson RK, DeFries JC. Causal models of reading disability: a twin study. Twin Research : the Official Journal of the International Society For Twin Studies. 7: 275-83. PMID 15193172 DOI: 10.1375/136905204774200550  1
2004 Deffenbacher KE, Kenyon JB, Hoover DM, Olson RK, Pennington BF, DeFries JC, Smith SD. Refinement of the 6p21.3 quantitative trait locus influencing dyslexia: linkage and association analyses. Human Genetics. 115: 128-38. PMID 15138886 DOI: 10.1007/s00439-004-1126-6  1
2004 Flint J, DeFries JC, Henderson ND. Little epistasis for anxiety-related measures in the DeFries strains of laboratory mice. Mammalian Genome : Official Journal of the International Mammalian Genome Society. 15: 77-82. PMID 15058379 DOI: 10.1007/s00335-003-3033-x  1
2004 Turri MG, DeFries JC, Henderson ND, Flint J. Multivariate analysis of quantitative trait loci influencing variation in anxiety-related behavior in laboratory mice. Mammalian Genome : Official Journal of the International Mammalian Genome Society. 15: 69-76. PMID 15058378 DOI: 10.1007/s00335-003-3032-y  1
2004 Henderson ND, Turri MG, DeFries JC, Flint J. QTL analysis of multiple behavioral measures of anxiety in mice. Behavior Genetics. 34: 267-93. PMID 14990867 DOI: 10.1023/B:BEGE.0000017872.25069.44  1
2003 O'Connor TG, Caspi A, Defries JC, Plomin R. Genotype-environment interaction in children's adjustment to parental separation. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 44: 849-56. PMID 12959493 DOI: 10.1111/1469-7610.00169  1
2003 Bishop EG, Cherny SS, Corley R, Plomin R, DeFries JC, Hewitt JK. Development genetic analysis of general cognitive ability from 1 to 12 years in a sample of adoptees, biological siblings, and twins Intelligence. 31: 31-49. DOI: 10.1016/S0160-2896(02)00112-5  1
2002 Fisher SE, DeFries JC. Developmental dyslexia: genetic dissection of a complex cognitive trait. Nature Reviews. Neuroscience. 3: 767-80. PMID 12360321 DOI: 10.1038/nrn936  1
2002 Wadsworth SJ, Corley RP, Hewitt JK, Plomin R, DeFries JC. Parent-offspring resemblance for reading performance at 7, 12 and 16 years of age in the Colorado Adoption Project. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 43: 769-74. PMID 12236611 DOI: 10.1111/1469-7610.00085  1
2002 Knopik VS, Smith SD, Cardon L, Pennington B, Gayan J, Olson RK, DeFries JC. Differential genetic etiology of reading component processes as a function of IQ. Behavior Genetics. 32: 181-98. PMID 12141780 DOI: 10.1023/A:1016069012111  1
2002 Kaplan DE, Gayán J, Ahn J, Won TW, Pauls D, Olson RK, DeFries JC, Wood F, Pennington BF, Page GP, Smith SD, Gruen JR. Evidence for linkage and association with reading disability on 6p21.3-22. American Journal of Human Genetics. 70: 1287-98. PMID 11951179 DOI: 10.1086/340449  1
2002 Willcutt EG, Pennington BF, Smith SD, Cardon LR, Gayán J, Knopik VS, Olson RK, DeFries JC. Quantitative trait locus for reading disability on chromosome 6p is pleiotropic for attention-deficit/hyperactivity disorder. American Journal of Medical Genetics. 114: 260-8. PMID 11920845 DOI: 10.1002/ajmg.10205  1
2002 Francks C, Fisher SE, Olson RK, Pennington BF, Smith SD, DeFries JC, Monaco AP. Fine mapping of the chromosome 2p12-16 dyslexia susceptibility locus: quantitative association analysis and positional candidate genes SEMA4F and OTX1. Psychiatric Genetics. 12: 35-41. PMID 11901358 DOI: 10.1097/00041444-200203000-00005  1
2002 Young SE, Smolen A, Corley RP, Krauter KS, DeFries JC, Crowley TJ, Hewitt JK. Dopamine transporter polymorphism associated with externalizing behavior problems in children. American Journal of Medical Genetics. 114: 144-9. PMID 11857574 DOI: 10.1002/ajmg.10155  1
2002 Fisher SE, Francks C, Marlow AJ, MacPhie IL, Newbury DF, Cardon LR, Ishikawa-Brush Y, Richardson AJ, Talcott JB, Gayán J, Olson RK, Pennington BF, Smith SD, DeFries JC, Stein JF, et al. Independent genome-wide scans identify a chromosome 18 quantitative-trait locus influencing dyslexia. Nature Genetics. 30: 86-91. PMID 11743577 DOI: 10.1038/ng792  1
2002 Boada R, Willcutt EG, Tunick RA, Chhabildas NA, Olson RK, Defries JC, Pennington BF. A twin study of the etiology of high reading ability Reading and Writing. 15: 683-707.  1
2002 Byrne B, Delaland C, Fielding-Barnsley R, Quain P, Samuelsson S, Høien T, Corley R, DeFries JC, Wadsworth S, Willcutt E, Olson RK. Longitudinal twin study of early reading development in three countries: Preliminary results Annals of Dyslexia. 52: 49-73.  1
2001 Davis CJ, Gayán J, Knopik VS, Smith SD, Cardon LR, Pennington BF, Olson RK, DeFries JC. Etiology of reading difficulties and rapid naming: the Colorado Twin Study of Reading Disability. Behavior Genetics. 31: 625-35. PMID 11838539 DOI: 10.1023/A:1013305730430  1
2001 Compton DL, DeFries JC, Olson RK. Are RAN- and phonological awareness-deficits additive in children with reading disabilities? Dyslexia (Chichester, England). 7: 125-49. PMID 11765981 DOI: 10.1002/dys.198  1
2001 Wadsworth SJ, Corley RP, Hewitt JK, Defries JC. Stability of genetic and environmental influences on reading performance at 7, 12, and 16 years of age in the Colorado Adoption Project. Behavior Genetics. 31: 353-9. PMID 11720121 DOI: 10.1023/A:1012218301437  1
2001 Turri MG, Henderson ND, DeFries JC, Flint J. Quantitative trait locus mapping in laboratory mice derived from a replicated selection experiment for open-field activity. Genetics. 158: 1217-26. PMID 11454769  1
2001 Turri MG, Datta SR, DeFries J, Henderson ND, Flint J. QTL analysis identifies multiple behavioral dimensions in ethological tests of anxiety in laboratory mice. Current Biology : Cb. 11: 725-34. PMID 11378382 DOI: 10.1016/S0960-9822(01)00206-8  1
2001 O'Connor TG, Jenkins JM, Hewitt J, DeFries JC, Plomin R. Longitudinal connections between parenting and peer relationships in adoptive and biological families Marriage and Family Review. 33: 251-271.  1
2000 Wadsworth SJ, Olson RK, Pennington BF, DeFries JC. Differential genetic etiology of reading disability as a function of IQ. Journal of Learning Disabilities. 33: 192-9. PMID 15505948  1
2000 Alarcón M, Pennington BF, Filipek PA, DeFries JC. Etiology of neuroanatomical correlates of reading disability. Developmental Neuropsychology. 17: 339-60. PMID 11056848 DOI: 10.1207/S15326942DN1703_4  1
2000 Davis CJ, Knopik VS, Wadsworth SJ, DeFries JC. Self-reported reading problems in parents of twins with reading difficulties. Twin Research : the Official Journal of the International Society For Twin Studies. 3: 88-91. PMID 10918621  1
2000 O'Connor TG, Caspi A, DeFries JC, Plomin R. Are associations between parental divorce and children's adjustment genetically mediated? An adoption study. Developmental Psychology. 36: 429-37. PMID 10902695  1
2000 Willcutt EG, Pennington BF, DeFries JC. Twin study of the etiology of comorbidity between reading disability and attention-deficit/hyperactivity disorder. American Journal of Medical Genetics. 96: 293-301. PMID 10898903 DOI: 10.1002/1096-8628(20000612)96:3<293::AID-AJMG12>3.0.CO;2-C  1
2000 Willcutt EG, Pennington BF, DeFries JC. Etiology of inattention and hyperactivity/impulsivity in a community sample of twins with learning difficulties. Journal of Abnormal Child Psychology. 28: 149-59. PMID 10834767 DOI: 10.1023/A:1005170730653  1
2000 Pennington BF, Filipek PA, Lefly D, Chhabildas N, Kennedy DN, Simon JH, Filley CM, Galaburda A, DeFries JC. A twin MRI study of size variations in human brain. Journal of Cognitive Neuroscience. 12: 223-32. PMID 10769318  1
2000 Alarcón M, Knopik VS, DeFries JC. Covariation of mathematics achievement and general cognitive ability in twins Journal of School Psychology. 38: 63-77.  1
1999 Knopik VS, DeFries JC. Etiology of covariation between reading and mathematics performance: a twin study. Twin Research : the Official Journal of the International Society For Twin Studies. 2: 226-34. PMID 10555134 DOI: 10.1375/136905299320565906  1
1999 Pennington BF, Filipek PA, Lefly D, Churchwell J, Kennedy DN, Simon JH, Filley CM, Galaburda A, Alarcon M, DeFries JC. Brain morphometry in reading-disabled twins. Neurology. 53: 723-9. PMID 10489032  1
1999 Gayán J, Smith SD, Cherny SS, Cardon LR, Fulker DW, Brower AM, Olson RK, Pennington BF, DeFries JC. Quantitative-trait locus for specific language and reading deficits on chromosome 6p. American Journal of Human Genetics. 64: 157-64. PMID 9915954 DOI: 10.1086/302191  1
1999 Schmitz S, Fulker DW, Plomin R, Zahn-Waxler C, Emde RN, DeFries JC. Temperament and problem behaviour during early childhood International Journal of Behavioral Development. 23: 333-355. DOI: 10.1080/016502599383856  1
1999 Wadsworth SJ, Fulker DW, DeFries JC. Stability of genetic and environmental influences on reading performance at 7 and 12 years of age in the Colorado adoption project International Journal of Behavioral Development. 23: 319-332. DOI: 10.1080/016502599383847  1
1999 Alarcón M, Plomin R, Fulker DW, Corley R, Defries JC. Molarity not modularity: Multivariate genetic analysis of specific cognitive abilities in parents and their 16-year-old children in the colorado adoption project Cognitive Development. 14: 175-193.  1
1998 Alarcón M, Plomin R, Fulker DW, Corley R, DeFries JC. Multivariate path analysis of specific cognitive abilities data at 12 years of age in the Colorado Adoption Project. Behavior Genetics. 28: 255-64. PMID 9803018 DOI: 10.1023/A:1021667213066  1
1998 Plomin R, Corley R, Caspi A, Fulker DW, DeFries J. Adoption results for self-reported personality: evidence for nonadditive genetic effects? Journal of Personality and Social Psychology. 75: 211-8. PMID 9686459  1
1998 Gilger JW, Pennington BF, Harbeck RJ, DeFries JC, Kotzin B, Green P, Smith S. A twin and family study of the association between immune system dysfunction and dyslexia using blood serum immunoassay and survey data. Brain and Cognition. 36: 310-33. PMID 9647681 DOI: 10.1006/brcg.1997.0972  1
1998 Plomin R, DeFries JC. The genetics of cognitive abilities and disabilities. Scientific American. 278: 62-9. PMID 9569675  1
1998 Light JG, Defries JC, Olson RK. Multivariate behavioral genetic analysis of achievement and cognitive measures in reading-disabled and control twin pairs. Human Biology. 70: 215-37. PMID 9549237  1
1998 Knopik VS, Alarcón M, DeFries JC. Common and specific gender influences on individual differences in reading performance: A twin study Personality and Individual Differences. 25: 269-277.  1
1998 Knopik VS, DeFries JC. A twin study of gender-influenced individual differences in general cognitive ability Intelligence. 26: 81-89.  1
1997 Alarcón M, DeFries JC, Light JG, Pennington BF. A twin study of mathematics disability. Journal of Learning Disabilities. 30: 617-23. PMID 9364899  1
1997 Knopik VS, Alarcón M, DeFries JC. Comorbidity of mathematics and reading deficits: evidence for a genetic etiology. Behavior Genetics. 27: 447-53. PMID 9336081 DOI: 10.1023/A:1025622400239  1
1997 Sherman SL, DeFries JC, Gottesman II, Loehlin JC, Meyer JM, Pelias MZ, Rice J, Waldman I. Behavioral genetics '97: ASHG statement. Recent developments in human behavioral genetics: past accomplishments and future directions. American Journal of Human Genetics. 60: 1265-75. PMID 9199545  1
1997 Plomin R, Fulker DW, Corley R, DeFries JC. Nature, Nurture, and Cognitive Development from 1 to 16 Years: A Parent-Offspring Adoption Study Psychological Science. 8: 442-447.  1
1997 Wadsworth SJ, Corley RP, Defries JC, Fulker DW, Carey G, Plomin R. Substance experimentation in the Colorado Adoption Project Personality and Individual Differences. 23: 463-471.  1
1997 Alarcón M, DeFries JC. Reading performance and general cognitive ability in twins with reading difficulties and control pairs Personality and Individual Differences. 22: 793-803.  1
1996 Knopik VS, Defries JC, Alarcón M. Gender differences in cognitive abilities of opposite-sex and same-sex twin pairs with reading disabilty. Annals of Dyslexia. 46: 241-57. PMID 24234274 DOI: 10.1007/BF02648178  1
1996 Markel PD, Fulker DW, Bennett B, Corley RP, DeFries JC, Erwin VG, Johnson TE. Quantitative trait loci for ethanol sensitivity in the LS x SS recombinant inbred strains: interval mapping. Behavior Genetics. 26: 447-58. PMID 8771905  1
1996 Schmitz S, Saudino KJ, Plomin R, Fulker DW, DeFries JC. Genetic and environmental influences on temperament in middle childhood: analyses of teacher and tester ratings. Child Development. 67: 409-22. PMID 8625721  1
1996 DeFries JC, Alarcón M. Genetics of specific reading disability Mental Retardation and Developmental Disabilities Research Reviews. 2: 39-47.  1
1996 Casto SD, Pennington BF, Light JG, DeFries JC. Differential genetic etiology of reading disability as a function of mathematics performance Reading and Writing. 8: 295-306.  1
1996 Saudino KJ, Plomin R, DeFries JC. Tester-rated temperament at 14, 20 and 24 months: Environmental change and genetic continuity British Journal of Developmental Psychology. 14: 129-144.  1
1995 Cardon LR, Smith SD, Fulker DW, Kimberling WJ, Pennington BF, Defries JC. Response. Science (New York, N.Y.). 268: 787-8. PMID 17792159 DOI: 10.1126/science.268.5212.787  1
1995 Light JG, DeFries JC. Comorbidity of reading and mathematics disabilities: genetic and environmental etiologies. Journal of Learning Disabilities. 28: 96-106. PMID 7884303  1
1995 Cardon LR, Smith SD, Fulker DW, Kimberling WJ, Pennington BF, DeFries JC. Quantitative trait locus for reading disability: correction. Science (New York, N.Y.). 268: 1553. PMID 7777847  1
1995 Markel PD, DeFries JC, Johnson TE. Ethanol-induced anesthesia in inbred strains of long-sleep and short-sleep mice: a genetic analysis of repeated measures using censored data. Behavior Genetics. 25: 67-73. PMID 7755520 DOI: 10.1007/BF02197243  1
1995 Casto SD, DeFries JC, Fulker DW. Multivariate genetic analysis of Wechsler Intelligence Scale for Children--Revised (WISC-R) factors. Behavior Genetics. 25: 25-32. PMID 7755516 DOI: 10.1007/BF02197239  1
1995 Alarcón M, DeFries JC, Fulker DW. Etiology of individual differences in reading performance: a test of sex limitation. Behavior Genetics. 25: 17-23. PMID 7755515 DOI: 10.1007/BF02197238  1
1995 Wadsworth SJ, DeFries JC, Fulker DW, Plomin R. Cognitive ability and academic achievement in the Colorado Adoption Project: a multivariate genetic analysis of parent-offspring and sibling data. Behavior Genetics. 25: 1-15. PMID 7755514 DOI: 10.1007/BF02197237  1
1995 Flint J, Corley R, DeFries JC, Fulker DW, Gray JA, Miller S, Collins AC. A simple genetic basis for a complex psychological trait in laboratory mice. Science (New York, N.Y.). 269: 1432-5. PMID 7660127  1
1995 Markel PD, DeFries JC, Johnson TE. Use of repeated measures in an analysis of ethanol-induced loss of righting reflex in inbred long-sleep and short-sleep mice. Alcoholism, Clinical and Experimental Research. 19: 299-304. PMID 7625561  1
1995 Light JG, Pennington BF, Gilger JW, DeFries JC. Reading Disability and Hyperactivity Disorder: Evidence for a Common Genetic Etiology Developmental Neuropsychology. 11: 323-335. DOI: 10.1080/87565649509540623  0.4
1995 Wadsworth SJ, DeFries JC, Fulker DW, Plomin R. Covariation among measures of cognitive ability and academic achievement in the Colorado Adoption Project: Sibling analysis Personality and Individual Differences. 18: 63-73. DOI: 10.1016/0191-8869(94)00112-6  1
1995 Wadsworth SJ, DeFries JC, Fulker DW, Olson RK, Pennington BF. Reading performance and verbal short-term memory: A twin study of reciprocal causation Intelligence. 20: 145-167. DOI: 10.1016/0160-2896(95)90030-6  1
1995 Cardon LR, Smith SD, Fulker DW, Kimberling WJ, Pennington BF, DeFries JC. Response [6] Science. 268: 787-788.  1
1994 Cherny SS, Fulker DW, Corley RP, Plomin R, DeFries JC. Continuity and change in infant shyness from 14 to 20 months. Behavior Genetics. 24: 365-79. PMID 7993315 DOI: 10.1007/BF01067538  1
1994 Gilger JW, Borecki IB, DeFries JC, Pennington BF. Commingling and segregation analysis of reading performance in families of normal reading probands. Behavior Genetics. 24: 345-55. PMID 7993313 DOI: 10.1007/BF01067536  1
1994 Cardon LR, Smith SD, Fulker DW, Kimberling WJ, Pennington BF, DeFries JC. Quantitative trait locus for reading disability on chromosome 6. Science (New York, N.Y.). 266: 276-9. PMID 7939663  1
1994 Smolen A, Marks MJ, DeFries JC, Henderson ND. Individual differences in sensitivity to nicotine in mice: response to six generations of selective breeding. Pharmacology, Biochemistry, and Behavior. 49: 531-40. PMID 7862704 DOI: 10.1016/0091-3057(94)90065-5  1
1994 Alarcón M, Defries JC, Gillis JJ. Familial resemblance for measures of reading performance in families of reading-disabled and control twins Reading and Writing. 6: 93-101. DOI: 10.1007/BF01027279  1
1993 Wadsworth SJ, DeFries JC, Fulker DW. Cognitive abilities of children at 7 and 12 years of age in the Colorado adoption project. Journal of Learning Disabilities. 26: 611-5. PMID 8283131  1
1993 Stevenson J, Pennington BF, Gilger JW, DeFries JC, Gillis JJ. Hyperactivity and spelling disability: testing for shared genetic aetiology. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 34: 1137-52. PMID 8245138  1
1993 Coon H, Carey G, Fulker DW, DeFries JC. Influences of school environment on the academic achievement scores of adopted and nonadopted children Intelligence. 17: 79-104. DOI: 10.1016/0160-2896(93)90040-C  1
1993 Johnson TE, DeFries JC, Markel PD. Mapping quantitative trait loci for behavioral traints in the mouse Behavior Genetics. 23: 305. DOI: 10.1007/BF01082473  1
1992 Waldman ID, DeFries JC, Fulker DW. Quantitative genetic analysis of IQ development in young children: multivariate multiple regression with orthogonal polynomials. Behavior Genetics. 22: 229-38. PMID 1596262 DOI: 10.1007/BF01067002  1
1992 Cherny SS, Cardon LR, Fulker DW, DeFries JC. Differential heritability across levels of cognitive ability. Behavior Genetics. 22: 153-62. PMID 1596255 DOI: 10.1007/BF01066994  1
1992 Gilger JW, Pennington BF, DeFries JC. A twin study of the etiology of comorbidity: attention-deficit hyperactivity disorder and dyslexia. Journal of the American Academy of Child and Adolescent Psychiatry. 31: 343-8. PMID 1564037 DOI: 10.1097/00004583-199203000-00024  1
1992 Cherny SS, DeFries JC, Fulker DW. Multiple regression analysis of twin data: a model-fitting approach. Behavior Genetics. 22: 489-97. PMID 1503550 DOI: 10.1007/BF01066617  1
1992 Pennington BF, Gilger JW, Olson RK, DeFries JC. The external validity of age- versus IQ-discrepancy definitions of reading disability: lessons from a twin study. Journal of Learning Disabilities. 25: 562-73. PMID 1431540  1
1992 Wadsworth SJ, DeFries JC, Stevenson J, Gilger JW, Pennington BF. Gender ratios among reading-disabled children and their siblings as a function of parental impairment. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 33: 1229-39. PMID 1400704 DOI: 10.1111/j.1469-7610.1992.tb00941.x  1
1992 Gillis JJ, Gilger JW, Pennington BF, DeFries JC. Attention deficit disorder in reading-disabled twins: evidence for a genetic etiology. Journal of Abnormal Child Psychology. 20: 303-15. PMID 1377727 DOI: 10.1007/BF00916694  1
1992 Johnson TE, DeFries JC, Markel PD. Mapping quantitative trait loci for behavioral traits in the mouse. Behavior Genetics. 22: 635-53. PMID 1363267 DOI: 10.1007/BF01066635  1
1992 Gillis JJ, DeFries JC, Fulker DW. Confirmatory factor analysis of reading and mathematics performance: a twin study. Acta Geneticae Medicae Et Gemellologiae. 41: 287-300. PMID 1342136  1
1992 Cardon LR, Corley RP, DeFries JC, Plomin R, Fulker DW. Factorial validation of a telephone test battery of specific cognitive abilities Personality and Individual Differences. 13: 1047-1050. DOI: 10.1016/0191-8869(92)90137-E  1
1992 Cardon LR, Fulker DW, DeFries JC, Plomin R. Multivariate genetic analysis of specific cognitive abilities in the Colorado adoption project at age 7 Intelligence. 16: 383-400. DOI: 10.1016/0160-2896(92)90016-K  1
1992 Braungart JM, Plomin R, DeFries JC, Fulker DW. Genetic Influence on Tester-Rated Infant Temperament as Assessed by Bayley's Infant Behavior Record: Nonadoptive and Adoptive Siblings and Twins Developmental Psychology. 28: 40-47.  1
1992 Cardon LR, Fulker DW, DeFries JC, Plomin R. Continuity and Change in General Cognitive Ability From 1 to 7 Years of Age Developmental Psychology. 28: 64-73.  1
1991 Pennington BF, Gilger JW, Pauls D, Smith SA, Smith SD, DeFries JC. Evidence for major gene transmission of developmental dyslexia. Jama. 266: 1527-34. PMID 1880884 DOI: 10.1001/jama.1991.03470110073036  1
1991 Plomin R, Coon H, Carey G, DeFries JC, Fulker DW. Parent-offspring and sibling adoption analyses of parental ratings of temperament in infancy and childhood. Journal of Personality. 59: 705-32. PMID 1774616  1
1991 Fulker DW, Cardon LR, Defries JC, Kimberling WJ, Pennington BF, Smith SD. Multiple regression analysis of sib-pair data on reading to detect quantitative trait loci Reading and Writing. 3: 299-313. DOI: 10.1007/BF00354964  1
1991 Defries JC, Stevenson J, Gillis JJ, Wadsworth SJ. Genetic etiology of spelling deficits in the Colorado and London twin studies of reading disability Reading and Writing. 3: 271-283. DOI: 10.1007/BF00354962  1
1991 Olson RK, Gillis JJ, Rack JP, Defries JC, Fulker DW. Confirmatory factor analysis of word recognition and process measures in the Colorado Reading Project Reading and Writing. 3: 235-248. DOI: 10.1007/BF00354960  1
1991 Gilger JW, Pennington BF, Defries JC. Risk for reading disability as a function of parental history in three family studies Reading and Writing. 3: 205-217. DOI: 10.1007/BF00354958  1
1990 Defries JC, Wadsworth SJ, Gillis JJ. Gender differences in cognitive abilities of reading-disabled twins. Annals of Dyslexia. 40: 216-28. PMID 24233636 DOI: 10.1007/BF02648150  1
1990 Brooks A, Fulker DW, DeFries JC. Reading performance and general cognitive ability: A multivariate genetic analysis of twin data Personality and Individual Differences. 11: 141-146. DOI: 10.1016/0191-8869(90)90006-D  1
1990 Cardon LR, Dilalla LF, Plomin R, DeFries JC, Fulker DW. Genetic correlations between reading performance and IQ in the Colorado Adoption Project Intelligence. 14: 245-257. DOI: 10.1016/0160-2896(90)90008-H  1
1990 Coon H, Fulker DW, DeFries JC, Plomin R. Home Environment and Cognitive Ability of 7-Year-Old Children in the Colorado Adoption Project: Genetic and Environmental Etiologies Developmental Psychology. 26: 459-468.  1
1989 Rice T, Carey G, Fulker DW, DeFries JC. Multivariate path analysis of specific cognitive abilities in the Colorado Adoption Project: conditional path model of assortative mating. Behavior Genetics. 19: 195-207. PMID 2719623 DOI: 10.1007/BF01065904  1
1989 DeFries JC. Gender ratios in children with reading disability and their affected relatives: a commentary. Journal of Learning Disabilities. 22: 544-5. PMID 2681486  1
1989 DeFries JC, Wilson JR, Erwin VG, Petersen DR. LS X SS recombinant inbred strains of mice: initial characterization. Alcoholism, Clinical and Experimental Research. 13: 196-200. PMID 2658655  1
1989 Cyphers LH, Fulker DW, Plomin R, DeFries JC. Cognitive abilities in the early school years: No effects of shared environment between parents and offspring Intelligence. 13: 369-386. DOI: 10.1016/S0160-2896(89)80009-1  1
1989 Decker SN, Vogler GP, Defries JC. Validity of self-reported reading disability by parents of reading-disabled and control children Reading and Writing. 1: 327-331. DOI: 10.1007/BF00386265  1
1989 Vogler GP, Baker LA, Decker SN, Defries JC, Huizinga DH. Cluster analytic classification of reading disability subtypes Reading and Writing. 1: 163-177. DOI: 10.1007/BF00377469  1
1989 Gillis JJ, Defries JC. Validity of school history as a diagnostic criterion for reading disability Reading and Writing. 1: 93-101. DOI: 10.1007/BF00377464  1
1989 Labuda MC, Defries JC. Differential prognosis of reading-disabled children as a function of gender, socieconomic status, IQ, and severity: A longitudinal study Reading and Writing. 1: 25-36. DOI: 10.1007/BF00178835  1
1988 Labuda MC, Defries JC. Genetic and environmental etiologies of reading disability: A twin study. Annals of Dyslexia. 38: 131-8. PMID 24235037 DOI: 10.1007/BF02648252  1
1988 Defries JC. Colorado reading project: Longitudinal analyses. Annals of Dyslexia. 38: 120-30. PMID 24235036 DOI: 10.1007/BF02648251  1
1988 DeFries JC, Fulker DW. Multiple regression analysis of twin data: etiology of deviant scores versus individual differences. Acta Geneticae Medicae Et Gemellologiae. 37: 205-16. PMID 3254013  1
1988 Fulker DW, DeFries JC, Plomin R. Genetic influence on general mental ability increases between infancy and middle childhood. Nature. 336: 767-9. PMID 3205303 DOI: 10.1038/336767a0  1
1988 LaBuda MC, DeFries JC. Cognitive abilities in children with reading disabilities and controls: a follow-up study. Journal of Learning Disabilities. 21: 562-6. PMID 2462002  1
1988 Bergeman CS, Plomin R, DeFries JC, Fulker DW. Path analysis of general and specific cognitive abilities in the Colorado adoption project: Early childhood Personality and Individual Differences. 9: 391-395. DOI: 10.1016/0191-8869(88)90102-X  1
1988 Thompson LA, Fulker DW, DeFries JC, Plomin R. Multivariate analysis of cognitive and temperament measures in 24-month-old adoptive and nonadoptive sibling pairs Personality and Individual Differences. 9: 95-100. DOI: 10.1016/0191-8869(88)90034-7  1
1988 Rice T, Fulker DW, DeFries JC, Plomin R. Path analysis of IQ during infancy and early childhood and an index of the home environment in the Colorado Adoption Project Intelligence. 12: 27-45. DOI: 10.1016/0160-2896(88)90021-9  1
1987 DeFries JC, Fulker DW, LaBuda MC. Evidence for a genetic aetiology in reading disability of twins. Nature. 329: 537-9. PMID 3657975 DOI: 10.1038/329537a0  1
1987 Loehlin JC, DeFries JC. Genotype-environment correlation and IQ. Behavior Genetics. 17: 263-77. PMID 3632561 DOI: 10.1007/BF01065506  1
1987 Zieleniewski AM, Fulker DW, DeFries JC, LaBuda MC. Multiple regression analysis of twin and sibling data Personality and Individual Differences. 8: 787-791. DOI: 10.1016/0191-8869(87)90131-0  1
1987 LaBuda MC, DeFries JC, Fulker DW. Genetic and environmental covariance structures among WISC-R subtests: A twin study Intelligence. 11: 233-244. DOI: 10.1016/0160-2896(87)90008-0  1
1987 DeFries JC, Plomin R, LaBuda MC. Genetic Stability of Cognitive Development From Childhood to Adulthood Developmental Psychology. 23: 4-12.  1
1986 LaBuda MC, DeFries JC, Fulker DW. Multiple regression analysis of twin data obtained from selected samples. Genetic Epidemiology. 3: 425-33. PMID 3803912 DOI: 10.1002/gepi.1370030607  1
1986 LaBuda MC, DeFries JC, Plomin R, Fulker DW. Longitudinal stability of cognitive ability from infancy to early childhood: genetic and environmental etiologies. Child Development. 57: 1142-50. PMID 3769603  1
1986 Vogler GP, DeFries JC. Multivariate path analysis of cognitive ability measures in reading-disabled and control nuclear families and twins. Behavior Genetics. 16: 89-106. PMID 3707490 DOI: 10.1007/BF01065481  1
1986 Rice T, Fulker DW, DeFries JC. Multivariate path analysis of specific cognitive abilities in the Colorado Adoption Project. Behavior Genetics. 16: 107-25. PMID 3707480 DOI: 10.1007/BF01065482  1
1986 DeFries JC, Fulker DW. Multivariate behavioral genetics and development: an overview. Behavior Genetics. 16: 1-10. PMID 3518694 DOI: 10.1007/BF01065475  1
1985 DeFries JC, Fulker DW. Multiple regression analysis of twin data. Behavior Genetics. 15: 467-73. PMID 4074272 DOI: 10.1007/BF01066239  1
1985 Bennett B, Fulker DW, DeFries JC. Familial resemblance for general cognitive ability in the Hawaii Family Study of Cognition. Behavior Genetics. 15: 401-6. PMID 4038241 DOI: 10.1007/BF01070897  1
1985 Vogler GP, DeFries JC, Decker SN. Family history as an indicator of risk for reading disability. Journal of Learning Disabilities. 18: 419-21. PMID 4031642  1
1985 Vogler GP, DeFries JC. Bivariate path analysis of familial resemblance for reading ability and symbol processing speed. Behavior Genetics. 15: 111-21. PMID 3838069 DOI: 10.1007/BF01065892  1
1984 Baker LA, Decker SN, DeFries JC. Cognitive abilities in reading-disabled children: a longitudinal study. Journal of Child Psychology and Psychiatry, and Allied Disciplines. 25: 111-7. PMID 6693518  1
1984 Wilson JR, Erwin VG, DeFries JC, Petersen DR, Cole-Harding S. Ethanol dependence in mice: direct and correlated responses to ten generations of selective breeding. Behavior Genetics. 14: 235-56. PMID 6541477  0.56
1984 Volger GP, DeFries JC, Decker SN. Family history as an indicator of risk for reading disability. Journal of Learning Disabilities. 17: 616-8. PMID 6512408  0.84
1983 DeFries JC, Baker LA. Parental contributions to longitudinal stability of cognitive measures in the Colorado Family Reading Study. Child Development. 54: 388-95. PMID 6872630  1
1983 Baker LA, DeFries JC, Fulker DW. Longitudinal stability of cognitive ability in the Colorado Adoption Project. Child Development. 54: 290-7. PMID 6872629  1
1983 Plomin R, DeFries JC. The Colorado Adoption Project. Child Development. 54: 276-89. PMID 6872628  0.68
1983 Johnson RC, Nagoshi CT, Ahern FM, Wilson JR, DeFries JC, McClearn GE, Vandenberg SG. Family background, cognitive ability, and personality as predictors of educational and occupational attainment. Social Biology. 30: 86-100. PMID 6658488  1
1983 Fulker DW, DeFries JC. Genetic and environmental transmission in the Colorado Adoption Project: path analysis. The British Journal of Mathematical and Statistical Psychology. 36: 175-88. PMID 6639895  1
1983 Vogler GP, DeFries JC. Linearity of offspring-parent regression for general cognitive ability. Behavior Genetics. 13: 355-60. PMID 6639560 DOI: 10.1007/BF01065773  0.48
1982 Whitney G, McClearn GE, DeFries JC. Heritability of alcohol preference in laboratory mice and rats: erroneous estimates. Behavior Genetics. 12: 543-6. PMID 7168739 DOI: 10.1007/BF01073785  1
1982 DeFries JC, Corley RP, Johnson RC, Vandenberg SG, Wilson JR. Sex-by-generation and ethnic group-by-generation interactions in the Hawaii family study of cognition. Behavior Genetics. 12: 223-30. PMID 7126105  0.64
1981 Decker SN, DeFries JC. Cognitive ability profiles in families of reading-disabled children. Developmental Medicine and Child Neurology. 23: 217-27. PMID 7215709  0.84
1981 Plomin R, DeFries JC. Multivariate behavioral genetics and development: twin studies. Progress in Clinical and Biological Research. 69: 25-33. PMID 7199168  0.68
1980 Decker SN, DeFries JC. Cognitive abilities in families with reading disabled children. Journal of Learning Disabilities. 13: 517-22. PMID 7430840  0.84
1980 Lewitter FI, DeFries JC, Elston RC. Genetic models of reading disability. Behavior Genetics. 10: 9-30. PMID 7425998 DOI: 10.1007/BF01067316  1
1980 George FR, O'Connor MF, DeFries JC, Collins AC. Components of the GABA system in mice selectively bred for differences in open-field activity. Brain Research. 200: 85-92. PMID 7417812 DOI: 10.1016/0006-8993(80)91096-3  1
1980 Corley RP, DeFries JC, Kuse AR, Vandenberg SG. Familial resemblance for the Identical Blocks Test of spatial ability: no evidence for X linkage. Behavior Genetics. 10: 211-5. PMID 7213303  0.64
1979 Ho H, Plomin R, DeFries JC. Selective placement in adoption. Social Biology. 26: 1-6. PMID 538462  0.68
1979 DeFries JC, Johnson RC, Kuse AR, McClearn GE, Polovina J, Vandenberg SG, Wilson JR. Familial resemblance for specific cognitive abilities. Behavior Genetics. 9: 23-43. PMID 426737 DOI: 10.1007/BF01067119  1
1979 Plomin R, DeFries JC. Multivariate behavioral genetic analysis of twin data on scholastic abilities. Behavior Genetics. 9: 505-17. PMID 263636  0.68
1978 DeFries JC, Ashton GC, Johnson RC, Kuse AR, McClearn GE, Mi MP, Rashad MN, Vandenberg SG, Wilson JR. The Hawaii family study of cognition: a reply. Behavior Genetics. 8: 281-8. PMID 687321 DOI: 10.1007/BF01072831  1
1978 DeFries JC, Singer SM, Foch TT, Lewitter FI. Familial nature of reading disability. The British Journal of Psychiatry : the Journal of Mental Science. 132: 361-7. PMID 638389  1
1978 Park J, Johnson RC, DeFries JC, McClearn GE, Mi MP, Rashad MN, Vanderberg SG, Wilson JR. Parent-offspring resemblance for specific cognitive abilities in Korea. Behavior Genetics. 8: 43-52. PMID 637828 DOI: 10.1007/BF01067703  1
1978 DeFries JC, Gervais MC, Thomas EA. Response to 30 generations of selection for open-field activity in laboratory mice. Behavior Genetics. 8: 3-13. PMID 637827 DOI: 10.1007/BF01067700  1
1978 DeFries JC, Plomin R. Behavioral genetics. Annual Review of Psychology. 29: 473-515. PMID 341788 DOI: 10.1146/annurev.ps.29.020178.002353  0.68
1977 Gervais MC, DeFries JC, Kuse AR. Open-field behavior in mice: effect of litter size. Behavioral Biology. 20: 519-22. PMID 901367  0.52
1977 Foch TT, DeFries JC, McClearn GE, Singer SM. Familial patterns of impairment in reading disability. Journal of Educational Psychology. 69: 316-29. PMID 893770 DOI: 10.1037/0022-0663.69.4.316  1
1977 Plomin R, DeFries JC, Roberts MK. Assortative mating by unwed biological parents of adopted children. Science (New York, N.Y.). 196: 449-50. PMID 850790  0.68
1977 Hewitt JK, Fulker DW, DeFries JC. Open-field behavior in mice: generality of results from a diallel analysis of replicate selected lines. Behavior Genetics. 7: 441-6. PMID 603477 DOI: 10.1007/BF01066779  1
1977 Plomin R, DeFries JC, Loehlin JC. Genotype-environment interaction and correlation in the analysis of human behavior. Psychological Bulletin. 84: 309-22. PMID 557211  0.68
1976 Plomin R, Defries JC. Heritability of IQ. Science (New York, N.Y.). 194: 10-2. PMID 17793049 DOI: 10.1126/science.194.4260.10  0.68
1976 DeFries JC, Ashton GC, Johnson RC, Kuse AR, McClearn GE, Mi MP, Rashad MN, Vandenberg SC, Wilson JR. Parent-offspring resemblance for specific cognitive abilities in two ethnic groups. Nature. 261: 131-3. PMID 1272380 DOI: 10.1038/261131a0  1
1976 Johnson RC, DeFries JC, Wilson JR, McClearn GE, Vandenberg SG, Ashton GC, Mi MP, Rashad MN. Assortative marriage for specific cognitive abilities in two ethnic groups. Human Biology. 48: 343-52. PMID 1261999  1
1976 Deckard BS, Lieff B, Schlesinger K, DeFries JC. Developmental patterns of seizure susceptibility in inbred strains of mice. Developmental Psychobiology. 9: 17-24. PMID 1254102 DOI: 10.1002/dev.420090104  1
1976 Johnson RC, Park J, DeFries JC, McClearn GE, Mi MP, Rashad MN, Vandenberg SG, Wilson JR. Assortative marriage for specific cognitive abilities in Korea. Social Biology. 23: 311-6. PMID 1028153  1
1976 DeFries JC, Vandenberg SG, McClearn GE. Genetics of specific cognitive abilities. Annual Review of Genetics. 10: 179-207. PMID 797308 DOI: 10.1146/annurev.ge.10.120176.001143  1
1975 Halcomb RA, Hegmann JP, DeFries JC. Open-field behavior in mice: A diallel analysis of selected lines. Behavior Genetics. 5: 217-31. PMID 1169055 DOI: 10.1007/BF01066174  1
1974 DeFries JC, Vandenberg SG, McClearn GE, Kuse AR, Wilson JR, Ashton GC, Johnson RC. Near identity of cognitive structure in two ethnic groups. Science (New York, N.Y.). 183: 338-9. PMID 4809078  1
1974 DeFries JC, Hegmann JP, Halcomb RA. Response to 20 generations of selection for open-field activity in mice. Behavioral Biology. 11: 481-95. PMID 4415597 DOI: 10.1016/S0091-6773(74)90800-1  1
1970 Hegmann JP, DeFries JC. MAXIMUM VARIANCE LINEAR COMBINATIONS FROM PHENOTYPIC, GENETIC, AND ENVIRONMENTAL COVARIANCE MATRICES. Multivariate Behavioral Research. 5: 9-18. PMID 26825186 DOI: 10.1207/s15327906mbr0501_3  1
1970 DeFries JC, Wilson JR, McClearn GE. Open-field behavior in mice: selection response and situational generality. Behavior Genetics. 1: 195-211. PMID 5527377 DOI: 10.1007/BF01074652  1
1970 Whitney G, McClearn GE, DeFries JC. Heritability of alcohol preference in laboratory mice and rats. The Journal of Heredity. 61: 165-9. PMID 5480952  1
1970 Hegmann JP, DeFries JC. Are genetic correlations and environmental correlations correlated? Nature. 226: 284-6. PMID 5437525 DOI: 10.1038/226284a0  1
1967 DeFries JC, Weir MW, Hegmann JP. Differential effects of prenatal maternal stress on offspring behavior in mice as a function of genotype and stress. Journal of Comparative and Physiological Psychology. 63: 332-4. PMID 6050042 DOI: 10.1037/h0020842  1
1966 DeFries JC, Hegmann JP, Weir MW. Open-field behavior in mice: evidence for a major gene effect mediated by the visual system. Science (New York, N.Y.). 154: 1577-9. PMID 5924928  1
1964 WEIR MW, DEFRIES JC. PRENATAL MATERNAL INFLUENCE OF BEHAVIOR IN MICE: EVIDENCE OF A GENETIC BASIS. Journal of Comparative and Physiological Psychology. 58: 412-7. PMID 14241056  0.48
1964 TOUCHBERRY RW, DEFRIES JC. GENETIC EFFECTS OF GAMMA-IRRADIATION ON EGG PRODUCTION AND ADULT EMERGENCE OF DROSOPHILA MELANOGASTER. Genetics. 49: 387-400. PMID 14135402  1
1961 DEFRIES JC, TOUCHBERRY RW. The variability of response to selection. I. Interline and intraline variability in a population of Drosophila affinis selected for body weight. Genetics. 46: 1519-30. PMID 13884837  1
1961 DEFRIES JC, TOUCHBERRY RW. A "maternal effect" on body weight in Drosophila. Genetics. 46: 1261-6. PMID 13884836  1
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