Impostors are individuals who believe their successes are not due to their own ability, but because of either luck or the notion that they must work harder than others. The relationship between impostor tendencies and different behavioral and affective variables was examined. With the present study's sample (N = 436), controlling for social desirability, impostor tendencies were significantly correlated with behavioral self-handicapping (r = .52, p < .001), and with shame-proneness (r = .54, p < .001) more than guilt-proneness (r = .28, p < .001). Regression analyses indicated that self-handicapping and shame-proneness were the best predictors of impostor tendencies (R 2 = 0.43). Based on these results it seems that strong impostor tendencies are related to, and best predicted by, self-handicapping behaviors and shameprone affect. Clance and Imes (1978) used the term impostor phenomenon to describe women executives who attributed their successes to luck or effort, instead of to their own skills or abilities. As a result, these women internalized a sense of being a fake (i.e., not as capable as others see them). In spite of the evidence, impostors do not accept their high abilities and outstanding achievements as reflecting their skill but believe that the recognition they receive is fraudulent, undesirable, and a fluke. Subsequent research focused on groups of people such SOCIAL