%0 Journal Article %T A New Measure of Interpersonal Exploitativeness %A Amy B. Brunell %A Mark S. Davis %A Kelly L. Wester %J Frontiers in Psychology %D 2013 %I Frontiers Media %R 10.3389/fpsyg.2013.00299 %X Measures of exploitativeness evidence problems with validity and reliability. The present set of studies assessed a new measure [the Interpersonal Exploitativeness Scale (IES)] that defines exploitativeness in terms of reciprocity. In Studies 1 and 2, 33 items were administered to participants. Exploratory and Confirmatory Factor Analysis demonstrated that a single factor consisting of six items adequately assess interpersonal exploitativeness. Study 3 results revealed that the IES was positively associated with ˇ°normalˇ± narcissism, pathological narcissism, psychological entitlement, and negative reciprocity and negatively correlated with positive reciprocity. In Study 4, participants competed in a commons dilemma. Those who scored higher on the IES were more likely to harvest a greater share of resources over time, even while controlling for other relevant variables, such as entitlement. Together, these studies show the IES to be a valid and reliable measure of interpersonal exploitativeness. The authors discuss the implications of these studies. %K exploitativeness %K narcissism %K measurement %K reciprocity %K social dilemma %U http://www.frontiersin.org/Journal/10.3389/fpsyg.2013.00299/abstract