Reply to Fleischman and Fessler's (2018) comment on “Hormonal correlates of pathogen disgust: Testing the Compensatory Prophylaxis Hypothesis”
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Benedict C. Jones, Amanda C. Hahn, Claire I. Fisher, Hongyi Wang, Michal Kandrik, Anthony J. Lee, Joshua M. Tybur, Lisa M. DeBruine (Source: Evolution and Human Behavior)
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Editorial Board
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): (Source: Evolution and Human Behavior)
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
A high-powered replication study finds no effect of starting or stopping hormonal contraceptive use on relationship quality
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Patrick Jern, Antti Kärnä, Janna Hujanen, Tatu Erlin, Annika Gunst, Helmi Rautaheimo, Emilia Öhman, S. Craig Roberts, Brendan P. ZietschAbstractA number of recent studies have implicated that incongruent use of hormonal contraceptives (HCs) negatively affects various aspects of women's romantic relationships. It has been suggested that women with incongruent HC use (a discrepancy in HC use status between when they first met their current partner and the time of study participation) report less sexual satisfaction and higher jea...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Our better nature: Does resource stress predict beyond-household sharing?
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Carol R. Ember, Ian Skoggard, Erik J. Ringen, Megan FarrerAbstractFood sharing and (to a lesser extent) labor sharing play central roles in the evolution of cooperation literature. One popular explanation for sharing beyond the family is that it reduces the likelihood of shortages by pooling risk across households. However, the frequency and scope of sharing have never been systematically documented across nonindustrial societies, and the literature is driven by theoretical models, experimental games, and case studies among a few ...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Detecting wholesale copying in cultural evolution
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Olivier Morin, Helena MitonAbstractA cultural practice can spread because it is transmitted with high fidelity, but also because biased transformation leads to its reinvention. The respective effect of these two mechanisms, however, may only be quantified if we can measure and detect high-fidelity transmission. This paper proposes wholesale copying, the reproduction of a set of elements as a set, as an operational definition. Using two corpus of heraldic designs (total n = 13,453), we apply information-theoretic tools to...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Sex differences in political leadership in an egalitarian society
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Chris von Rueden, Sarah Alami, Hillard Kaplan, Michael GurvenAbstractWe 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...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Fertile women evaluate male bodies as more attractive, regardless of masculinity
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Julia Jünger, Tobias L. Kordsmeyer, Tanja M. Gerlach, Lars PenkeAbstractOvulatory cycle shifts in women's mate preferences have been documented for several physical and behavioral traits. Research suggests that, at peak fertility, women tend to prefer men with characteristics that reflect good genes for short-term sexual relationships. However, existing findings have been criticized for methodological flexibility and failing attempts to replicate core results. In a large (N = 157), pre-registered, within-subject study s...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
The relative importance of intra- and intersexual selection on human male sexually dimorphic traits
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Tobias L. Kordsmeyer, John Hunt, David A. Puts, Julia Ostner, Lars PenkeAbstractRecent evidence suggests that in sexual selection on human males, intrasexual competition plays a larger role than female choice. In a sample of men (N = 164), we sought to provide further evidence on the effects of men's physical dominance and sexual attractiveness on mating success and hence in sexual selection. Objective measures and subjective ratings of male sexually dimorphic traits purportedly under sexual selection (height, vocal and facial...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Determining the roles of father absence and age at menarche in female psychosocial acceleration
In this study, we use a two-part structural equation model and data from 342 female undergraduates to address two of these questions: First, what is the role of father absence in female psychosocial acceleration, controlling potentially confounding aspects of environment and family structure? Second, to what extent does age at menarche mediate environmental and family structure effects on sexual debut? Findings indicated that many aspects of environment and family structure could be summarized with two factors—socio-economic status (SES) and fragmented family structure. We found that among those who had experienced sexua...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
More than skin deep: Major histocompatibility complex (MHC)-based attraction among Asian American speed-daters
We examined possible biologically-driven selection for immunology genes, specifically preferences for Major Histocompatibility Complex (MHC)-dissimilarity, through the ecologically-valid method of speed-dating. Two-hundred-and-sixty-two single Asian Americans went on speed-dates (N observations = 2215) with participants of the other sex, making second date offers and rating each other on measures of mate desirability, facial attractiveness, and body scent attractiveness. Using a single nucleotide polymorphism (SNP) analysis, women, but not men, showed preferences for speed-dating partners based on MHC-complementarity. ...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Women's voice pitch lowers after pregnancy
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Katarzyna Pisanski, Kavya Bhardwaj, David RebyAbstractWomen's voice pitch (the perceptual correlate of fundamental frequency, F0) varies across the menstrual cycle and lowers after menopause, and may represent a putative signal of women's fertility and reproductive age. Yet, despite dramatic changes in women's sex hormone levels and bodies during and after pregnancy, previous between-subject and case studies have not found systematic changes in F0 due to pregnancy. Here, we tracked within-individual variation in 20 mothers' voices...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Reprint of Hormonal correlates of pathogen disgust: testing the compensatory prophylaxis hypothesis
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Benedict C. Jones, Amanda C. Hahn, Claire I. Fisher, Hongyi Wang, Michal Kandrik, Anthony J. Lee, Joshua M. Tybur, Lisa M. DeBruineAbstractRaised progesterone during the menstrual cycle is associated with suppressed physiological immune responses, reducing the probability that the immune system will compromise the blastocyst's development. The Compensatory Prophylaxis Hypothesis proposes that this progesterone-linked immunosuppression triggers increased disgust responses to pathogen cues, compensating for the reduction in physiolo...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Response to “Hormonal Correlates of Pathogen Disgust: Testing the Compensatory Prophylaxis Hypothesis”
Publication date: July 2018Source: Evolution and Human Behavior, Volume 39, Issue 4Author(s): Diana S. Fleischman, Daniel M.T. Fessler (Source: Evolution and Human Behavior)
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Is there a link between paternity concern and female genital cutting in West Africa?
Publication date: Available online 2 July 2018Source: Evolution and Human BehaviorAuthor(s): Janet A. Howard, Mhairi A. GibsonAbstractHere we explore the relationship between female genital cutting (FGC), sexual behaviour, and marriage opportunities in five West African countries. Using large demographic datasets (n 72,438 women, 12,704 men, 10,695 couples) we explore key (but untested) assumptions of an evolutionary proposal that FGC persists because it provides evolutionary fitness benefits for men by reducing non-paternity rates. We identify and test three assumptions implicit in this proposal. We test whether cut women...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
Contemporary parasite stress curvilinearly correlates with outgroup trust: Cross-country evidence from 2005 to 2014
Publication date: September 2018Source: Evolution and Human Behavior, Volume 39, Issue 5Author(s): Jinguang ZhangAbstractGeneral trust is trust extended to people from outside one's immediate social network. Two studies have tested a parasite stress explanation of general trust using cross-cultural data, showing a linear negative correlation between parasite stress and trust in “most people.” However, recent studies suggest that 1) trust in most people as a measure of general trust confounds ingroup trust and outgroup trust in cross-cultural surveys and 2) parasite stress can curvilinearly correlate with variables of i...
Source: Evolution and Human Behavior - July 10, 2018 Category: Psychiatry & Psychology Source Type: research
