The purpose of the present study is to provide insight on the debate concerning how best to organize societies: with more freedom (looseness) or with more constraint (tightness). In a comparison of 32 nations, Harrington, Boski, and Gelfand examine the relationship between tightness/looseness and three dimensions of societal well-being: psychosocial, health, and political/economic outcomes. Findings indicate that excessive constraint and/or freedom contribute to poorer psychosocial, health, and economic/political outcomes, as well as overall national-level well-being. These results suggest that a balance of freedom and constraint is associated with optimal societal well-being.

Researchers looked at four different demographic scenarios (altered mean vital rates (i.e., fertility and mortality), vital rate stochasticity, vital rate covariance, and periodic catastrophes) and their possible effects on the rapid population growth of contemporary human foragers and steady population decline of chimpanzees. They evaluated these variables and the various conditions that would favor a more sustainable zero population growth (ZPG) among 10 small-scale subsistence human populations (Agta, Ache, Hadza, Hiwi, Ju/’hoansi, Gainj, Tsimane, Yanomamo, Northern Territory Aborigines, and Herero) and five wild chimpanzee groups (Gombe, Kanyawara, Mahale, Ngogo, and Taï). The results state that the most effective modifications towards ZPG would include a combination of more than one of the four demographic scenarios tested, with the most realistic solution including both vital rate alteration and an increase in catastrophes.

This paper tests assumptions regarding the inverse relationship between murder and suicide. Analysis suggests that murder and suicide in fact vary together, and they are also positively associated with overall punishment in a society.

This paper tests assumptions regarding the inverse relationship between murder and suicide. Analysis suggests that murder and suicide in fact vary together, and they are also positively associated with overall punishment in a society.

Evolutionary anthropologists have long emphasized the puzzle of short inter-birth intervals, extended childhoods, and long post-reproductive lives of humans, in particular the problem it poses for raising children. While there is agreement that mothers receive assistance from kin to offset the high costs of raising children, opinion is equivocal as to which kin help and to what extent they help. Here the authors review 45 studies from historical and contemporary natural fertility populations to assess the effects of various types of kin on child survival rates.

Research has consistently shown that economic affluence serves as a reliable predictor of a country's scientific wealth. However, these authors argue that this relationship is not universally straightforward. The primary goal of this study is to explore additional factors that either enhance or diminish the impact of economic wealth on scientific excellence. They find that HQSI, a commonly used metric for assessing scientific wealth, is positively and significantly correlated with economic indicators across countries. Yet, when societal factors are controlled for, these economic indicators become statistically insignificant. In interpreting these findings, the authors suggest that "small and well-governed countries with a long-standing democratic past" are more efficient in "translating economic wealth into high-quality science" (365).

Building on previous research concerning murder and suicide, this study investigates 18 forms of aggression and explores how they might be engendered by certain child-training practices. Results show a weak connection between most forms of aggression and child-training practices, but non-literate societies do show a positive correlation between murder and suicide. The author develops a theory positing that experience of social blockage will be related to outwardly-directed aggression, whereas social loss will be related to inwardly-directed aggression.

This study provides the first tests of the relationships between population-level adolescent fertility rates and mortality risk at two different time points. The hypotheses are based in life-history theory, which predicts that human reproductive choices are shaped by mortality. The authors find that reproductive strategies are significantly predicted by both early (between ages 1-7) risks of mortality and current cues of mortality risk.

This study provides the first tests of the relationships between population-level adolescent fertility rates and mortality risk at two different time points. The hypotheses are based in life-history theory, which predicts that human reproductive choices are shaped by mortality. The authors find that reproductive strategies are significantly predicted by both early (between ages 1-7) risks of mortality and current cues of mortality risk.

In this article, the authors seek to test the theory that the veiling of women is a form of male mate guarding strategy, especially in harsh environments (specifically those with poor health and high mortality). They test this hypothesis using survey data drawn from 25 majority Muslim countries. This theory found support in the results of their statistical tests. In addition to testing the hypotheses articulated in the paper (as noted above), they also ran correlations between income level, importance of religion, and a countries sex ratio and views on the importance of veiling.