This study asserts that premastication (the pre-chewing of food for infant feeding) has existed as a cross cultural human universal stemming from the post natal immaturity of infant development and their need to have nutritional supplements to breast milk before they develop the molars necessary to consume an adult diet. Hypotheses are informally tested by sampling 119 cultures from the eHRAf database and looking for frequency of premastication occurrence. About one-third with information on infant feeding mention pre-mastication.

This chapter offers an exploratory study that examines the relationships between several culture characterstics, including child socialization practices, social structure, and food production, and mind-altering drug use in non-literate societies. All hypotheses were supported.

This study examines the relationship between pairbonds and lactation, specifically the relationship between pairbond stability, alloparenting, and cross-cultural trends in breastfeeding. Findings show that both conjugal stability and availability of alloparental care are associated with age at weaning.

This article seeks to examine the distribution and frequency of bride-theft. Tylor's (1889) findings between various forms of marriage by capture and certain other social instituions are confirmed.

This chapter tests the influences of physiological stressors during infancy on different aspects of musical behavior. Findings suggest that songs in societies where infantile stress is practiced will be characterized by stronger accents and a wider range.

This article examines the relationship between early food gratification, emotional predispositions to share food with others, and community systems. Results suggest that gratification of food needs varies with community type, and young children who receive food whenever they cry or ask are more likely to share food in adulthood. In broader terms, the need to receive from others is gratified differently under different sociological conditions, and these differences influence individuals toward divergent socially patterned behaviors in adulthood.

This paper hypothesizes that cross-cultural variation in rhythm is related to variation in infant carrying practices. Suggestions are made regarding the psychological origin of rhythm as well as the function and importance of music in human experience.

This book investigates peaceful societies and the social and ecological conditions that discourage war. The author uses ethnographic examples, cross-cultural findings, primatology, and archaeology to examine war, social organization, human evolution, and conflict management.

This study examines 12 matched pairs of closely related societies and suggests that there is a relationship between socialization pressure toward compliance (rather than assertion) and emphasis on food production. Results also indicate that stronger compliance training is associated with higher indulgence in infancy and lower frequency of drunkenness in adulthood.

This study investigates a material explanation for the practice of twin infanticide. Empirical analysis suggests that twin infanticide is more likely where women lack sufficient facilities to rear two infants while fulfilling her other responsibilities.