Impairment of perception by positive and negative affect

Abstract

This study examined the perceptibility of affectively charged words. It was hypothesised that the affect elicited via preattentive processing of an impinging word amplifies subsequent, attentive processing. According to this hypothesis, the affect should impair the veridical perception when the word is presented in an extremely impoverished manner and, as a consequence, attentive processing is likely to be misdirected to an irrelevant perceptual code. In Experiment 1, 52 subjects were shown an affectively positive, negative, or neutral target word (128 words in total) with an extremely diminished contrast for 100, 150, or 200msec. They then chose, from a pair of equivalently valenced words, the one presented. As predicted, choice accuracy was lower for both affectively positive and negative words than for neutral words in all the three exposure time conditions. In further support of the current analysis, Experiment 2 showed that once the stimulus contrast was increased, the accuracy was no worse for the affective words than for the neutral words.