Girls and women more aggressive towards siblings, study finds

Girls and women show slightly more aggression towards siblings than boys and men, a trend seen across cultures.

Why it matters

  • Challenges the common belief that men are always more aggressive than women.
  • Highlights the importance of context in understanding aggression.

By the numbers

  • Survey of 4,136 individuals in 24 countries.
  • Aggression measured in direct and indirect forms.

The big picture

  • The trend was consistent across wealthier and poorer countries, and Western and Non-Western cultures.
  • Suggests a universal contextual effect of sibling relationships on female aggression.

What they're saying

  • Personal anecdotes reflect the study’s findings.
  • Siblings are seen as competitors for attention and resources, which may explain the aggression.
  • The universality of the trend suggests deeper evolutionary or developmental dynamics.

Caveats

  • Based on self-reported data, which can have biases.
  • The study suggests a universal trend but does not explain the underlying mechanisms fully.

What’s next

  • Further research could explore the underlying mechanisms of this trend.
  • Understanding these dynamics could help in family therapy and conflict resolution.