Individual and group identities are powerful for shaping behavior.

I view stereotype threat as like a negative group identity.

It would be an interesting philanthropic project to hire marketing/branding/advertising companies to try and create more positive group identities for groups that currently have negative ones.

e.g. "xyz group people are thoughtful and generous with their resources"

See also https://en.wikipedia.org/wiki/Observer-expectancy_effect https://lifehacker.com/a-scientific-guide-to-saying-no-1293242273