by Heinz Heckhausen | Heinz-Dieter Schmalt Klaus Schneider.
by Lewis P. Lipsitt | .
by Lewis P.Lipsitt | .
by Robert A. Zucker | .
by Marsha B.Liss | .
by Robert Plutchik | .
by Hayne W.Reese | .
by Dwain N. Walcher | .
by R. F. Dillon | .
by Leonard Berkowitz | .
by Robbie Case | .
by Hayne W. Reese | .
by Joachim F. Wohlwill | .
by L. R. Goulet And Paul B. Baltes | .
by Gordon W.Duncan | .
by Samuel H. Preston | .
by Peter R. Cox | .
by Judith Worell | .
by Susan E. Embretson | .
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