We tested whether power reduces responses related to social stress and thus increases performance evaluation in social evaluation situations. We hypothesized and found that thinking about having power reduced fear of negative evaluation and physiological arousal during a self-presentation task (Studies 1 and 2). In Study 2, we also showed that simply thinking about having power made individuals perform better in a social evaluation situation. Our results confirmed our hypotheses that the mechanism explaining this power-performance link was that high power participants felt less fear of negative evaluation. The reduced fear of negative evaluation generated fewer signs of behavioral nervousness, which caused their performance to be evaluated more positively (serial mediation). Simply thinking of having power can therefore have important positive consequences for a person in an evaluation situation in terms of how he or she feels and how he or she is evaluated. Copyright © 2013 John Wiley & Sons, Ltd.Social evaluation situations are characterized by one or several evaluators observing and assessing the performance of a person in a face-to-face encounter. They are common in work contexts, such as job interviews, meetings, or when giving public speeches or presentations. Social evaluation situations usually provoke stress-related responses in the person being assessed, such as fear of negative evaluation, physiological stress responses (Al 'Absi, et al., 1997;Kirschbaum, Pirke, & Hellhammer, 1993), and nervous behavior (Karam & Ragsdale, 1994). In this article, we posit that being reminded of one's own power, the latter defined as the extent to which a person feels or is able to influence or control other people (Halevy, Chou, & Galinsky, 2011;Schmid Mast, 2002), reduces stress-related responses in social evaluation situations. We therefore claim that power acts as a stress buffer in social evaluation situations in that it reduces the fear of negative evaluation, physiological arousal, and nonverbal signs of nervousness.That power reduces fear of negative evaluation, defined as ". . .the degree to which people experience apprehension at the prospect of being evaluated negatively" (Leary, 1983, p. 371), is theoretically founded in the approach/inhibition theory of power (Keltner, Gruenfeld, & Anderson, 2003). According to this theory, high power people pay less attention to threats. A social evaluation situation creates such a potential threat by inducing worries about making an unfavorable impression (i.e., fear of negative evaluation). To the extent that high power people are prone to ignore threats, they should be relatively immune towards the fear of negative evaluation.Moreover, according to the approach/inhibition theory (Keltner, et al., 2003), high power is associated with relatively more positive mood and less negative emotions. Specifically, the emotions of fear and embarrassment have been documented to be negatively related to power (Anderson, Langner, & Keltner, 2001), emotions that are genuine to...