To understand transmission of knowledge and its impact on human evolution history, this study explores the research question: "How do hunter-gatherer children learn subsistence skills?". The authors use meta-ethnography methods on 34 cultures from five continents discussing these topics. The results show that the learning process starts early in infancy when their parents take them to the excursions. In middle childhood, they already acquired gathering skills. Only in the start of adolescence, adults begin teaching how to hunt and to produce complex tools. The learning process continues into adulthood.

Causal factors to the development of crime are examined. Frequency of theft and personal crime are tested against these causal factors in a search for correlations.

This book discusses the characteristics of adolescence cross-culturally and examines the differences in the adolescent experience for males and females. Several relationships are tested in order to gain an understanding of cross-cultural patterns in adolescence.

This book discusses the characteristics of adolescence cross-culturally and examines the differences in the adolescent experience for males and females. Several relationships are tested in order to gain an understanding of cross-cultural patterns in adolescence.

This article tests the general hypothesis that frequency of violent crimes by individuals is related to high concentrations of wealth.

To understand transmission of knowledge and its impact on human evolution history, this study explores the research question: "How do hunter-gatherer children learn subsistence skills?". The authors use meta-ethnography methods on 34 cultures from five continents discussing these topics. The results show that the learning process starts early in infancy when their parents take them to the excursions. In middle childhood, they already acquired gathering skills. Only in the start of adolescence, adults begin teaching how to hunt and to produce complex tools. The learning process continues into adulthood.

This paper supports Beatrice B. Whiting's (1965) sex-identity conflict hypothesis which suggests a relationship between males' early identification with their mothers and male violence. Authors find that, in addition to socialization aggression, frequency of homicide/assault is significantly related to father-infant sleeping distance, particularly when residence is not matrilocal and/or warfare is more than occasional.

This book discusses the characteristics of adolescence cross-culturally and examines the differences in the adolescent experience for males and females. Several relationships are tested in order to gain an understanding of cross-cultural patterns in adolescence.

This book discusses the characteristics of adolescence cross-culturally and examines the differences in the adolescent experience for males and females. Several relationships are tested in order to gain an understanding of cross-cultural patterns in adolescence.

This article tests the general hypothesis that frequency of violent crimes by individuals is related to high concentrations of wealth.