Two young brothers standing in front of a pond. Source: Vitolda Klein/Unsplash Numerous studies show that sibling relationship quality is important for well-being and relationship experiences with ...

A sample of 4,013 participants from 24 countries were asked about aggression toward siblings and non-sibs, to determine whether aggressive sisters are an American phenomenon.

Human men are typically more aggressive than human women, a finding supported by reams of research. But surveys of 4,136 individuals in 24 countries reveal an exception to the trend: aggression in ...

Sibling conflicts over the care of elderly parents are quite common, along with disputes over estates and inheritance. Whether it’s disagreements on how much effort a sibling contributes, financial ...