A study of University of California social science faculty tested several common explanations and found that none told the full story.

Across 21 studies, researchers confirmed that people learned attitudes from a single trust interaction, whether positive or negative. But negative experiences were harder to dispel. The rise in distrust after a negative experience was about double the boost in trust after a good exchange. Surprisingly, the same effects did not occur when people interacted with artificial intelligence, because participants did not see those interactions as social.

Bigamy has been a rare crime during the past 400 years – and offenders have been harshly punished, a major new study shows.

A landmark 34-year study, co-led by University of Warwick, tracks very preterm babies from birth to middle adulthood and identifies early cognitive development as the strongest predictor of who flourishes and struggles as adults.

Economists say labelling supermarket food to show its environmental impact, in combination with taxing the most carbon-intensive items, could slash UK greenhouse gas emissions by almost 5%, while generating net gains for society.