Abstract
The nature of stimulus-response compatibility (SRC) effects related to left-right finger position within the hand were examined in two experiments requiring a centrally-located unimanual choice response. Experiment 1 Involved a letter recognition task with stimull presented at either a small (3.3 degrees) or large (13.3 degrees) visual angle. Effects consistent with finger position spatial compatibility were observed when stimull occured at the small visual angle, but not for the large visual angle. Experiment 2 examined the generalizability of these effects in a same-different letter matching task. The results indicate that spatial compatibility effects related to finger position can effect performance of more cognitive tasks, even when stimulus postion is irrelevant to determining the correct response. However, the effects vary with changes in stimulus conditions and task demands. There is a need for additional research examining the robustness of different types of SRC effects across tasks and across conditions varying stimulus and/or response eccentricity.
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