Zhang Y, Proctor RW.
Experimental Psychology, 55, 409-416
"Good" and "bad" vocal responses are faster when an irrelevant emotional stimulus feature corresponds with the response than when it does not, a phenomenon known as the affective Simon effect. Two experiments investigated how this effect was influenced by an intermixed emotion-relevant evaluation task. In Experiment 1, four schematic faces (friendly, happy, hostile, sad) were used for the affective Simon task and four different images (bird, heart, gun, ghost) for the evaluation task, whereas in Experiment 2 the schematic faces were used for both tasks. Mixed-compatible emotion-relevant trials increased the affective Simon effect in both experiments, but mixed-incompatible emotion-relevant trials did not influence it. Also, the advantage of the compatible mapping over the incompatible mapping increased in mixed conditions rather than decreased. These results differ from those obtained when visual-manual tasks for which location is relevant and irrelevant are mixed. They confirm that enhancement of the affective Simon effect when the Simon task is mixed with a compatible emotion-relevant task is due to increased salience of the affective valence.
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