Behavioural psychology has actually given us a lot of the insights that have now been been expanded into behavioural economics, which is the only branch of econ

Behavioural psychology has actually given us a lot of the insights that have now been been expanded into behavioural economics, which is the only branch of economics that has some predictive power (and this in my view makes it scientific). So psychology has issues but I feel like a lot more science to it than people expect, if you look into the right circles.