A new study links same-sex attraction to parents' socioeconomic status during pregnancy. Researchers report the highest frequency of same-sex attraction was found in children in the lowest income group and elevated levels of same-sex attraction in children who came from the most affluent backgrounds. They speculate higher levels of fetal estrogen is a factor in both male and female same-sex attraction in the lowest-income group, while elevated levels of fetal testosterone is a factor in the higher income group. Higher fetal estrogen was related to more submissive roles in same-sex relationships, while higher fetal testosterone was associated with more assertive characteristics.
Low testosterone and high estrogen in men are linked to an increased risk of severe COVID-19 infection. Researchers report smaller ring finger length in men, a sign of lower testosterone, was a predictor of severe COVID infection and an increased risk of hospitalization after contracting the virus.
Pupillary response in those with PTSD differs from people who have not experienced traumatic events. The pupils of those with PTSD failed to show sharp constriction caused by light changes, and more enlargement when exposed to emotional stimuli that other participants. Patients with PTSD not only showed an exaggerated response to threatening stimuli but also to stimuli that depicted positive images.
Adding outdoor learning time has positive effects on both students and teachers. Researchers report children who were exposed to outdoor education had improvements in concentration, behavior, and learning, while teachers experienced better health, wellbeing, and job satisfaction.