In my college media studies classes we learned about Inoculation Theory, first developed in 1961 by Yale social psychologist William J. McGuire. TL;DR: it does

In my college media studies classes we learned about Inoculation Theory, first developed in 1961 by Yale social psychologist William J. McGuire. TL;DR: it does work. The effects have been replicated multiple times. It is a form of psychological manipulation, implying all the relevant risks and ethical considerations.