Georgia State University scientists were "really surprised" after a gene-editing experiment led to Syrian hamsters showing high levels of aggression.

What causes some individuals to act out violently when provoked, while others turn the other cheek? For decades, psychologists, criminologists, and sociologists (among others) have tried to understand ...

A group of researchers made gene-edited hamsters that were meant to be less aggressive. The researchers used CRISPR, a gene-editing platform, to remove a gene they believed was responsible for ...

Testosterone can foster friendly, prosocial behavior in males, a new animal study finds. The Proceedings of the Royal Society B published the research on Mongolian gerbils conducted by neuroscientists ...

A simple, freely available analysis tool and hardware for analyzing fruit flies allows opportunities for researchers in low-income settings or out in the field to screen for genes and nerve circuits ...

Toxic masculinity is a major societal concern. It is said that testosterone from the testes makes men overly aggressive. But the biology of hormones and aggression is not that simple. A symposium ...