Researcher Anne Pisor discusses how group living and perception play a role in triggering the 'us versus them' mindset, which can lead to conflict. She also provides insights on how cultural background, past experiences, and resource availability contribute to this phenomenon.
A study published in Judgment and Decision Making found that religious believers give more to those of the same faith, while atheists also favor their own group. In follow-up studies in the USA and Egypt/Lebanon, Muslims were more generous towards their own kind than Christians or atheists.
A global study of 46,500 people aged 18-99 found that older adults are more willing to donate to charities within their own country, but less likely to do so internationally. This preference for 'in-group' behavior remains consistent even after accounting for wealth, pandemic severity, and perceived risk.
A new study found that collective religious rituals, not religious devotion, are linked to support for suicide attacks. Regular attendance at religious services was associated with increased support for parochial altruism and suicide attacks, but not with regular prayer.
SFI researchers Samuel Bowles and Jung-Kyoo Choi suggest that altruistic behavior towards fellow group members may have evolved together with hostility towards outsiders. The study found that the combination of these traits enabled survival, as they promoted group conflict, which in turn contributed to their success.