Writing core values improves performance under stress

Cohen, Geoffrey L. & Sherman, David K. (2014). The Psychology of Change: Self-Affirmation and Social Psychological Intervention. Annual Review of Psychology, Vol. 65, 333-371.

Negative affect decreases judgmental bias

Forgas, Joseph P. (2013). Don’t Worry, Be Sad! On the Cognitive, Motivational, and Interpersonal Benefits of Negative Mood. Current Directions in Psychological Science, 22(3), 225-32.

Negative affect eliminates the halo effect

Forgas, Joseph P. (2011). She just doesn't look like a philosopher...? Affective influences on the halo effect in impression formation. European Journal of Social Psychology, 41(7), 812-17.

Negative affect reduces dispositional attributions based on coerced essays advocating unpopular opinions

Forgas, Joseph P. (1998). On being happy and mistaken: mood effects on the fundamental attribution error. Journal of Personality and Social Psychology, 75(2), 318-31.

Affirmations make you feel worse

Wood, Joanne V., Perunovic, W.Q. Elaine & Lee, John W. (2009). Positive Self-Statements: Power for Some, Peril for Others.