DETECTING AND IDENTIFYING RESPONSE-COMPATIBLE STIMULI

Previous work indicates that action-control processes influence percep tual processes: The identification probability of a left- or right-poi nting arrow is reduced when it appears during the execution of a compa tible left-right-key press (Musseler & Hommel, in press). The present study addresses the question of whether this effect would also be obse rved in a detection task-that is, with judgments that do not require d iscriminating between left- and right-pointing arrows. Indeed, we foun d comparable effects in both the identification task and the detection task. This outcome is interpreted within a common-coding framework, w hich holds that stimulus processing and action control operate on the same codes.