The culmination of almost seven decades of research, A Trio of Pursuits: Puzzles in Human Development is the magnum opus of the career of Dr. Jerome Kagan, Emeritus Professor of Psychology, Harvard University, USA. This book summarizes three of the author's major research themes during a career that spanned from 1954 to present: preservation of individual traits, maturation of cognition and emotions, and the influence of two temperamental biases on...