Anticipated cooperation vs. competition moderates interpersonal projection

Two experiments investigated the impact of anticipated interdependence on people’s projection of their characteristics onto an unknown target. After participants had rated themselves on a list of personality traits, they were led to expect a situation of cooperation or competition with another participant and rated this participant on the same list of traits. In both experiments, projection of self-attributed traits was stronger under cooperation than competition. This effect was independent of trait valence, whether defined a priori (Experiment 1) or as an idiosyncratic measure (Experiment 2). Experiment 2 also revealed that the moderation of interpersonal projection by interdependence was not driven by changes in participants’ self-representation. These findings suggest that the anticipated interdependence context influences the way we perceive similarity with unknown others. We discuss possible cognitive and motivational mechanisms underlying this effect.