This book was assigned for Dr. Bell's "Human Growth and Development" course at Union Theological Seminary. It was a peculiar experience. On the one hand, it was an evidentially-supported endorsement of the importance of love (in the sense of physical contact) in child development--a real feel-good proposition. On the other hand, it was predicated upon systematic torture. Additionally, ironically, humanistic psychologist Abraham Maslow was, for a time, one of Harlow's colleagues in such studies.