Social tipping can accelerate beneficial changes in behaviour in diverse domains from equality and social justice to climate change. Hypothetically, however, group identities might undermine tipping in ways policy makers do not anticipate. To examine this, we implemented an experiment around the...

Results from cultural evolutionary theory often suggest that social learning can lead cultural groups to differ markedly in the same environment. Put differently, cultural evolutionary processes can in principle stabilise behavioural differences between groups, which in turn could lead selection...

This paper analyzes historical census data from the final Soviet census in 1989. We find that, even in the absence of sex-selective abortions, the fertility decisions of Armenian, Georgian, and Azeri parents living in Russia in the late 1970s and the 1980s were significantly more son-biased than...