Research just published in the peer-reviewed journal Personality and Individual Differences looks at the psychological underpinnings of making yourself seem more desirable by withholding obvious signs of romantic interest.
A UCLA-led study has found that in 2 of 3 states and jurisdictions with policies that require students entering school to receive the human papillomavirus vaccine, vaccination rates among 13-to-17-year-olds were significantly higher than in surrounding states without such policies.
Rare longitudinal analysis shows lesbian, gay and bisexual youth are twice as likely as heterosexual peers to disaffiliate with organized religion in late adolescence and early adulthood, although there was little change in the frequency of prayer.
Brown-headed cowbirds show a bias in the sex ratio of their offspring depending on the time of the breeding season, researchers report in a new study. More female than male offspring hatch early in the breeding season in May, and more male hatchlings emerge in July.
Middle-aged women are more likely than men to have changes in the brain related to Alzheimer's disease, as detected by imaging, even when there are no differences in thinking and memory. This may be associated with hormonal changes due to menopause, specifically the loss of estrogen, according to a study published in the June 24, 2020, online issue of Neurology®, the medical journal of the American Academy of Neurology.
Affection is partly genetic for women but not for men, finds a new study led by the University of Arizona. Those predisposed to being more affectionate may be struggling with 'skin hunger' amid COVID-19 physical distancing.
Social distancing and limited access to contraceptive and abortion care during the COVID-19 pandemic is affecting the sexual and reproductive health of adolescents and young adults according to a new study. The researchers address how these challenges, as well as peer and romantic relationships, are being navigated.
Men and women choose partners according to different criteria. These are the same almost all over the world and have remained unchanged in the last 30 years, according to a new survey of 14 000 people.
New research shows that removing sexual competition and choice through enforced monogamy creates populations that are less resilient to environmental stress, such as climate change. The research team looked at how flour beetles coped with environmental and genetic stress after they had evolved under monogamous versus polyandrous mating patterns. The researchers say that their findings should apply to any species that reproduces sexually, experiences some degree of sexual selection, and faces environmental stress.
When choosing a mate, females of different subspecies of Drosophila mojavensis recognize the right mating partners either mainly by their song or by their smell. New species apparently evolve when the chemical mating signal is altered and when, in turn, the signal is reinterpreted by the opposite sex in the context of other signals, such as the courtship song.