The social sciences are affected by fads and they generate them as well. Slate magazine has an interesting article on the POWER OF THE POSE. Yes, it seems that if you strike a pose your life will improve, you will feel better about yourself, and you will automatically be promoted to full professor.
But then again, maybe not:
http://www.slate.com/articles/health_and_science/science/2016/01/amy_cuddy_s_power_pose_research_is_the_latest_example_of_scientific_overreach.html
But then again, maybe not:
http://www.slate.com/articles/health_and_science/science/2016/01/amy_cuddy_s_power_pose_research_is_the_latest_example_of_scientific_overreach.html