?


Petra
Netter

Justus-Liebig University, Giessen, Germany
?


Heinz
Heckhausen

Max-Planck Institute of Psychology, Munich, Germany








Joachim C.
Brunstein

Justus-Liebig University, Giessen, Germany

Günter
Maier

University of Bielefeld, Bielefeld, Germany
(Options)

Günter MaierX