Contemporary Theories and Systems in Psychology

Twenty years is a long time in the life of a science. While the historical roots of psychology have not changed since the first edition of this book, some of the offshoots of the various theories and systems discussed have been crit­ ically reexamined and have undergone far-reaching modifications. New and bold research has led to a broadening of perspectives, and recent devel­ opments in several areas required a considerable amount of rewriting. I have been fortunate in the last fifteen years to