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Journals
Evolution and Human Behavior :...
Evolution and Human Behavior : Official Journal of the Human Behavior and Evolution Society
#1
JOURNAL ARTICLE
Delaney A Knorr, Molly Fox
Grandmothers are often critical helpers during a mother's reproductive career. Studies on the developmental origins of health and disease demonstrate how maternal psychological distress can negatively influence fetal development and birth outcomes, highlighting an area in which soon-to-be grandmothers (henceforth "grandmothers") can invest to improve both mother and offspring well-being. Here, we examine if and how a pregnant woman's mental health- specifically, depression, state-anxiety, and pregnancy-related anxiety- is influenced by her relationship with her fetus' maternal and paternal grandmother, controlling for relationship characteristics with her fetus' father...
January 2023: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#2
JOURNAL ARTICLE
Cari M Pick, Ahra Ko, Alexandra S Wormley, Adi Wiezel, Douglas T Kenrick, Laith Al-Shawaf, Oumar Barry, Yoella Bereby-Meyer, Watcharaporn Boonyasiriwat, Eduard Brandstätter, Ana Carla Crispim, Julio Eduardo Cruz, Daniel David, Oana A David, Renata Pereira Defelipe, Pinar Elmas, Agustín Espinosa, Ana Maria Fernandez, Velichko H Fetvadjiev, Stefka Fetvadjieva, Ronald Fischer, Silvia Galdi, Oscar Javier Galindo-Caballero, Galina M Golovina, Luis Gomez-Jacinto, Sylvie Graf, Igor Grossmann, Pelin Gul, Peter Halama, Takeshi Hamamura, Lina S Hansson, Hidefumi Hitokoto, Martina Hřebíčková, Darinka Ilic, Jennifer Lee Johnson, Mane Kara-Yakoubian, Johannes A Karl, Michal Kohút, Julie Lasselin, Norman P Li, Anthonieta Looman Mafra, Oksana Malanchuk, Simone Moran, Asuka Murata, Serigne Abdou Lahat Ndiaye, Jiaqing O, Ike E Onyishi, Eddieson Pasay-An, Muhammed Rizwan, Eric Roth, Sergio Salgado, Elena S Samoylenko, Tatyana N Savchenko, A Timur Sevincer, Eric Skoog, Adrian Stanciu, Eunkook M Suh, Daniel Sznycer, Thomas Talhelm, Fabian O Ugwu, Ayse K Uskul, Irem Uz, Jaroslava Varella Valentova, Marco Antonio Correa Varella, Danilo Zambrano, Michael E W Varnum
The COVID-19 pandemic caused drastic social changes for many people, including separation from friends and coworkers, enforced close contact with family, and reductions in mobility. Here we assess the extent to which people's evolutionarily-relevant basic motivations and goals-fundamental social motives such as Affiliation and Kin Care-might have been affected. To address this question, we gathered data on fundamental social motives in 42 countries ( N = 15,915) across two waves, including 19 countries ( N = 10,907) for which data were gathered both before and during the pandemic (pre-pandemic wave: 32 countries, N = 8998; 3302 male, 5585 female; M age = 24...
November 2022: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#3
JOURNAL ARTICLE
Adam Flitton, Thomas E Currie
A huge number of hypotheses have been put forward to explain the substantial diversity in economic performance we see in the present-day. There has been a growing appreciation that historical and ecological factors have contributed to social and economic development. However, it is not clear whether such factors have exerted a direct effect on modern productivity, or whether they influence economies indirectly by shaping the cultural evolution of norms and institutions. Here we analyse a global cross-national dataset to test between hypotheses involving a number of different ecological, historical, and proximate social factors and a range of direct and indirect pathways...
January 2022: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#4
JOURNAL ARTICLE
Richard J Johnson, William L Wilson, Sondra T Bland, Miguel A Lanaspa
Several behavioral disorders, including attention deficit hyperactivity disorder (ADHD), bipolar disorder, and aggressive behaviors are linked with sugar intake and obesity. The reason(s) for this association has been unclear. Here we present a hypothesis supporting a role for fructose, a component of sugar and high fructose corn syrup (HFCS), and uric acid (a fructose metabolite), in increasing the risk for these behavioral disorders. Recent studies have shown that the reason fructose intake is strongly associated with development of metabolic syndrome is that fructose intake activates an evolutionary-based survival pathway that stimulates foraging behavior and the storage of energy as fat...
May 2021: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#5
JOURNAL ARTICLE
Michael D Gurven, Daniel E Lieberman
Despite recent rapid advances in medical knowledge that have improved survival, conventional medical science's understanding of human health and disease relies heavily on people of European descent living in contemporary urban industrialized environments. Given that modern conditions in high-income countries differ widely in terms of lifestyle and exposures compared to those experienced by billions of people and all our ancestors over several hundred thousand years, this narrow approach to the human body and health is very limiting...
September 2020: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#6
JOURNAL ARTICLE
Jennifer Kotler, Samuel A Mehr, Alena Egner, David Haig, Max M Krasnow
Parent-offspring conflict-conflict over resource distribution within families due to differences in genetic relatedness-is the biological foundation for many psychological phenomena. In genomic imprinting disorders, parent-specific genetic expression is altered causing imbalances in behaviors influenced by parental investment. We use this natural experiment to test the theory that parent-offspring conflict contributed to the evolution of vocal music by moderating infant demands for parental attention. Individuals with Prader-Willi syndrome, a genomic imprinting disorder resulting from increased relative maternal genetic contribution, show enhanced relaxation responses to song, consistent with reduced demand for parental investment (Mehr et al...
September 2019: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#7
JOURNAL ARTICLE
Francesca De Petrillo, Alexandra G Rosati
Humans can use an intuitive sense of statistics to make predictions about uncertain future events, a cognitive skill that underpins logical and mathematical reasoning. Recent research shows that some of these abilities for statistical inferences can emerge in preverbal infants and non-human primates such as apes and capuchins. An important question is therefore whether animals share the full complement of intuitive reasoning abilities demonstrated by humans, as well as what evolutionary contexts promote the emergence of such skills...
September 2019: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#8
JOURNAL ARTICLE
Stephan A Reber, Vedrana Šlipogor, Jinook Oh, Andrea Ravignani, Marisa Hoeschele, Thomas Bugnyar, W Tecumseh Fitch
Recognizing that two elements within a sequence of variable length depend on each other is a key ability in understanding the structure of language and music. Perception of such interdependencies has previously been documented in chimpanzees in the visual domain and in human infants and common squirrel monkeys with auditory playback experiments, but it remains unclear whether it typifies primates in general. Here, we investigated the ability of common marmosets ( Callithrix jacchus ) to recognize and respond to such dependencies...
March 2019: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#9
JOURNAL ARTICLE
Chris von Rueden, Sarah Alami, Hillard Kaplan, Michael Gurven
We test the contribution of sex differences in physical formidability, education, and cooperation to the acquisition of political leadership in a small-scale society. Among forager-farmers from the Bolivian Amazon, we find that men are more likely to exercise different forms of political leadership, including verbal influence during community meetings, coordination of community projects, and dispute resolution. We show that these differences in leadership are not due to gender per se but are associated with men's greater number of cooperation partners, greater access to schooling, and greater body size and physical strength...
July 2018: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#10
JOURNAL ARTICLE
Coren L Apicella, Paul Rozin, Justin T A Busch, Rachel E Watson-Jones, Cristine H Legare
The phenomenon of magical contagion - the unobserved passage of properties between entities that come into physical contact - was described by anthropologists over a century ago, yet questions remain about its origin, function, and universality. Contagion sensitivity, along with the emotion of disgust, has been proposed to be part of a biologically-evolved system designed to reduce exposure to pathogens by increasing the avoidance of "contaminated" objects. Yet this phenomenon has not been studied using systematic psychological comparison outside of industrialized populations...
May 2018: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#11
JOURNAL ARTICLE
Justin T A Busch, Rachel E Watson-Jones, Cristine H Legare
Two studies examined children's reasoning about biological kinds in populations that vary in formal education and direct experience with the natural world, a Western (urban U.S.) and a Non-Western population (Tanna, Vanuatu). Study 1 examined children's concepts of ecological relatedness between species ( N = 97, 5-13- year-olds). U.S. children provided more taxonomic explanations than Ni-Vanuatu children, who provided more ecological, physiological, and utility explanations than U.S. children. Ecological explanations were most common overall and more common among older than younger children across cultures...
May 2018: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#12
JOURNAL ARTICLE
Eric Schniter, Nathaniel T Wilcox, Bret A Beheim, Hillard S Kaplan, Michael Gurven
Storytelling can affect wellbeing and fitness by transmitting information and reinforcing cultural codes of conduct. Despite their potential importance, the development and timing of storytelling skills, and the transmission of story knowledge have received minimal attention in studies of subsistence societies that more often focus on food production skills. Here we examine how storytelling and patterns of information transmission among Tsimane forager-horticulturalists are predicted by the changing age profiles of storytellers' abilities and accumulated experience...
January 2018: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#13
JOURNAL ARTICLE
Robin I M Dunbar, Richard Sosis
We examine community longevity as a function of group size in three historical, small scale agricultural samples. Community sizes of 50, 150 and 500 are disproportionately more common than other sizes; they also have greater longevity. These values mirror the natural layerings in hunter-gatherer societies and contemporary personal networks. In addition, a religious ideology seems to play an important role in allowing larger communities to maintain greater cohesion for longer than a strictly secular ideology does...
January 2018: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#14
JOURNAL ARTICLE
Caitlyn D Placek, Purnima Madhivanan, Edward H Hagen
Pregnancy increases women's nutritional requirements, yet causes aversions to nutritious foods. Most societies further restrict pregnant women's diet with food taboos. Pregnancy food aversions are theorized to protect mothers and fetuses from teratogens and pathogens or increase dietary diversity in response to resource scarcity. Tests of these hypotheses have had mixed results, perhaps because many studies are in Westernized populations with reliable access to food and low exposure to pathogens. If pregnancy food aversions are adaptations, however, then they likely evolved in environments with uncertain access to food and high exposure to pathogens...
November 2017: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#15
JOURNAL ARTICLE
Gillian L Vale, Sarah J Davis, Susan P Lambeth, Steven J Schapiro, Andrew Whiten
Cumulative culture underpins humanity's enormous success as a species. Claims that other animals are incapable of cultural ratcheting are prevalent, but are founded on just a handful of empirical studies. Whether cumulative culture is unique to humans thus remains a controversial and understudied question that has far-reaching implications for our understanding of the evolution of this phenomenon. We investigated whether one of human's two closest living primate relatives, chimpanzees, are capable of a degree of cultural ratcheting by exposing captive populations to a novel juice extraction task...
September 2017: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#16
JOURNAL ARTICLE
Alexander K Hill, Rodrigo A Cárdenas, John R Wheatley, Lisa L M Welling, Robert P Burriss, Peter Claes, Coren L Apicella, Michael A McDaniel, Anthony C Little, Mark D Shriver, David A Puts
Fluctuating asymmetry (FA), deviation from perfect bilateral symmetry, is thought to reflect an organism's relative inability to maintain stable morphological development in the face of environmental and genetic stressors. Previous research has documented negative relationships between FA and attractiveness judgments in humans, but scant research has explored relationships between the human voice and this putative marker of genetic quality in either sex. Only one study (and in women only) has explored relationships between vocal attractiveness and asymmetry of the face, a feature-rich trait space central in prior work on human genetic quality and mate choice...
March 2017: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#17
JOURNAL ARTICLE
Markel Palmstierna, Anna Frangou, Anna Wallette, Robin Dunbar
In small scale societies, lethal attacks on another individual usually invite revenge by the victim's family. We might expect those who perpetrate such attacks to do so only when their own support network (mainly family) is larger than that of the potential victim so as to minimise the risk of retaliation. Using data from Icelandic family sagas, we show that this prediction holds whether we consider biological kin or affinal kin (in-laws): on average, killers had twice as many relatives as their victims. These findings reinforce the importance of kin as a source of implicit protection even when they are not physically present...
March 2017: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#18
JOURNAL ARTICLE
Hao Dong, Matteo Manfredini, Satomi Kurosu, Wenshan Yang, James Z Lee
Human child survival depends on adult investment, typically from parents. However, in spite of recent research advances on kin influence and birth order effects on human infant and child mortality, studies that directly examine the interaction of kin context and birth order on sibling differences in child mortality are still rare. Our study supplements this literature with new findings from large-scale individual-level panel data for three East Asian historical populations from northeast China (1789-1909), northeast Japan (1716-1870), and north Taiwan (1906-1945), where preference for sons and first-borns is common...
March 2017: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#19
JOURNAL ARTICLE
Bronwyn Tarr, Jacques Launay, Robin I M Dunbar
Moving in synchrony leads to cooperative behaviour and feelings of social closeness, and dance (involving synchronisation to others and music) may cause social bonding, possibly as a consequence of released endorphins. This study uses an experimental paradigm to determine which aspects of synchrony in dance are associated with changes in pain threshold (a proxy for endorphin release) and social bonding between strangers. Those who danced in synchrony experienced elevated pain thresholds, whereas those in the partial and asynchrony conditions experienced no analgesic effects...
September 2016: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
#20
JOURNAL ARTICLE
Jessica L Barker, Pat Barclay
Why should organisms incur a cost in order to inflict a (usually greater) cost on others? Such costly harming behavior may be favored when competition for resources occurs locally, because it increases individuals' fitness relative to close competitors. However, there is no explicit experimental evidence supporting the prediction that people are more willing to harm others under local versus global competition. We illustrate this prediction with a game theoretic model, and then test it in a series of economic games...
July 2016: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
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