Do the results of psychological studies change our behaviour?
I do have to note this question is broad and opinion based, according to the stack conventions. Nonetheless, I think it's an important question, given that scientific publications may alter the behavior of people en mass and even generate entire movements that, e.g., argue and campaign against vital medical interventions. 

A notorious example being the retracted Lancet publication of the adverse effects of vaccination causing autism, based on fraudulent data (Rao &amp; Andrade, 2011) by Wakefield (1998). This unfortunate paper has resulted in global anti-vaccine movements based on the fictional assumption that vaccination can cause autism.

References
- Rao &amp; Andrade, Indian J Psychiatry (2011); 53(2): 95–6
- Wakefield et al., The Lancet (Retracted)