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Age-Appropriate Wisdom?
Springer Science and Business Media LLC - Tập 32 - Trang 48-83 - 2021
We investigate whether age profiles of ethnobiological knowledge development are consistent with predictions derived from life history theory about the timing of productivity and reproduction. Life history models predict complementary knowledge profiles developing across the lifespan for women and men as they experience changes in embodied capital and the needs of dependent offspring. We evaluate ......
Hominid Brain Evolution
Springer Science and Business Media LLC - Tập 20 - Trang 67-79 - 2009
Hypotheses regarding the selective pressures driving the threefold increase in the size of the hominid brain since Homo habilis include climatic conditions, ecological demands, and social competition. We provide a multivariate analysis that enables the simultaneous assessment of variables representing each of these potential selective forces. Data were collated for latitude, prevalence of harmful ......
Hierarchy
Springer Science and Business Media LLC - Tập 11 - Trang 259-279 - 2000
Dominance hierarchies (sometimes called “pecking orders”) are virtually universal in social species, including humans. In most species and in ancestral and early human societies, these hierarchies allocate scarce resources, including food and often access to females. Humans sometimes use hierarchies for these allocational purposes, but humans use hierarchies for productive purposes as well—as in f......
Giving between generations in American families
Springer Science and Business Media LLC - Tập 1 Số 3 - Trang 211-232 - 1990
Before Cumulative Culture
Springer Science and Business Media LLC - - 2015
In the 7 million years or so since humans shared a common ancestor with chimpanzees we have colonized more of the planet’s terrestrial habitat than any other mammalian species and come to account for more biomass than all other terrestrial vertebrates combined. Chimpanzees, in contrast to and under pressure from ourselves, have veered toward extinction. There are multiple reasons for the stark evo......
Complex Sociality of Wild Chimpanzees Can Emerge from Laterality of Manual Gestures
Springer Science and Business Media LLC - Tập 30 - Trang 299-325 - 2019
Humans are strongly lateralized for manual gestures at both individual and population levels. In contrast, the laterality bias in primates is less strong, leading some to suggest that lateralization evolved after the Pan and Homo lineages diverged. However, laterality in humans is also context-dependent, suggesting that observed differences in lateralization between primates and humans may be rela......
The Early Expression of Blatant Dehumanization in Children and Its Association with Outgroup Negativity
Springer Science and Business Media LLC - Tập 33 - Trang 196-214 - 2022
Dehumanization is observed in adults across cultures and is thought to motivate human violence. The age of its first expression remains largely untested. This research demonstrates that diverse representations of humanness, including a novel one, readily elicit blatant dehumanization in adults (N = 482) and children (aged 5–12; N = 150). Dehumanizing responses in both age groups are associated wit......
Reasoning about dead agents reveals possible adaptive trends
Springer Science and Business Media LLC - Tập 16 Số 4 - Trang 360-381 - 2005
Altruistic cooperation during foraging by the Ache, and the evolved human predisposition to cooperate
Springer Science and Business Media LLC - Tập 13 - Trang 105-128 - 2002
This paper presents quantitative data on altruistic cooperation during food acquisition by Ache foragers. Cooperative activities are defined as those that entail a cost of time and energy to the donor but primarily lead to an increase in the foraging success of the recipient. Data show that Ache men and women spend about 10% of all foraging time engaged in altruistic cooperation on average, and th......
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