Close to the same: Similarity influences remembered distance between stimuli.

Six preregistered studies show that the degree of similarity of two objects biases people's spatial memory of these objects. When objects are high in similarity, people remember having seen them closer together in space than when they are low in similarity. All six studies provide correlational evidence, showing that the more similar participants rated two stimuli, the smaller they remembered the distance between them. This was true for both conceptual and perceptual similarity (Study 3). Furthermore, Studies 2, 4A, and 4B provide evidence of causality by manipulating similarity experimentally. Replicating the correlational findings, highly similar stimuli were remembered as closer together than stimuli low in similarity. This pattern was found across different stimulus categories and similarity dimensions. Overall, these findings show that the similarity of stimuli influences perceivers' reconstruction of their spatial locations.

Group membership does not modulate goal- versus movement-based imitation.

It is often put forward that in-group members are imitated more strongly than out-group members. However, the validity of this claim has been questioned as recent investigations were not able to find differences for the imitation of in- versus out-group members. A central characteristic of these failed replications is their mere focus on movement-based imitation, thereby neglecting to take into consideration the superior goal of the movements. By using a computerised version of the pen-and-cups task, we disentangled movement- from goal-based imitation to shed further light onto the link between group membership and imitation. As previous research demonstrated that out-group members (as compared with in-group members) are represented psychologically distant and as psychological distance shifts the degree to which participants engage in goal- versus movement-based imitation, we predicted that in-group members (as compared with out-group members) shift the degree to which individuals imitate movements versus goals. The results did not confirm our predictions, as group membership does not modulate the degree of movement- versus goal-based imitation. Theoretical implications and the question whether imitative behaviour is socially modulated are discussed.

Why People Hate Congress but Love Their Own Congressperson: An Information Processing Explanation.

Citizens in Western democracies often have negative attitudes toward political bodies, yet consistently re-elect their own representatives to these same political bodies. They hate Congress, but love their own congressperson. In contrast to resource-based explanations, we propose that this Paradox of Congressional Support is partly due to the wide availability of negative information about politicians in open societies combined with basic processes of information processing. Five studies found that unrelated negative political information decreases attitudes toward political categories such as U.S. governors but has no effect on attitudes of familiar, individual politicians (e.g., one's own governor); additional studies further identify familiarity as the critical process. Importantly, we demonstrate that this effect generalizes to all U.S. regions and remains when controlling for and is not moderated by political ideology. These results place a presumed macrolevel political paradox within the domain of cognitive mechanisms of basic information processing.