Primate play is often interpreted as a developmental activity through which immature individuals acquire capacities used later in life. This essay uses play to examine a wider process in behavioral r...

How the social brain hypothesis undermines hereditarianism

Nations are connected in many ways, yet cross-national analyses often assume they are independent. Here, the authors show that previous studies may not have sufficiently accounted for this non-indepen...

Scientific bias has obscured how common same-sex behavior is across the animal world.

Biological anthropology has long positioned foraging and often pastoralist populations as the most appropriate referent communities for the rigorous study of human behavior and evolution. With this, ...

Why do people react so differently to cold weather?

This cohort study assesses whether exposure to sexual orientation and gender identity change efforts is associated with cardiovascular disease risk in sexual and gender minority young adults assigned ...

Fifty years of economic change have taken a heavy toll on some Americans, especially those with less education who not only have been left behind but also are sicker and living shorter lives, accordin...

For nearly 80 years, the world-renowned Kinsey Institute at Indiana University has been the trusted source for scientific knowledge and research on critical issues in sexuality, gender, and reproducti...

The Trump administration is rapidly canceling hundreds of grants, in the most aggressive attack yet on American science.

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In a letter, the state’s public health commissioner said the action was taken because “confidential information provided to the Maternal Mortality Review Committee was inappropriately shared with outs...

This study examines the prescribing trends of 3 oral preexposure prophylaxis medications and a long-acting injectable option from 2013 to 2023.