Note: [] Address for correspondence: Peter C. M. Molenaar, Human Development & Family Studies, Henderson S113B, The Pennsylvania State University, University Park, PA 16802, USA; Email: pxm21@psu.edu
Abstract: In this contribution it is shown that Gilbert Gottlieb's theoretical contributions to developmental science, in particular his focus on individual development and his discussion of the limitations of developmental behavior genetics in this respect, are vindicated by recent theoretical developments in mathematical biology and psychometrics.