Beach, in which the authors integrate information about human sexual behavior from different cultures, and include detailed comparisons across animal species, with particular emphasis on primates.

He described their efforts as having "important theoretical, methodological, and practical implications" and believed they showed the merits of a "cross-disciplinary approach to the problems of human behavior."

He complimented them for statistically documenting sexual practices and attitudes, and contributing important material on masturbation and homosexuality, suggesting the existence of "an inherent biological tendency toward such activities."

He believed their book deserved to be widely read and predicted that it would have a "healthy impact on attitudes toward sex" and encourage further research by social scientists.

[5] Stone credited Ford and Beach with examining both biological and social influences on sex, thereby providing an "essential perspective" on human sexual behavior.

While acknowledging that their study might have implications for psychology and psychoanalysis, they felt themselves unqualified to explore specific questions pertaining to this field.