Diederik Stapel earns 33rd and 34th retractions

Two more retractions for Diederik Stapel, his 33rd and 34th, by our count.

The Journal of Experimental Social Psychology, which has been a frequent subject of Retraction Watch posts recently, has retracted “Similarities and differences between the impact of traits and expectancies: What matters is whether the target stimulus is ambiguous or mixed:”