Sogabe, Y., Tokai Womens College, Japan
In previous studies, it has been reported that patients of anxiety-disorder show delayed responses to anxiety-related words and phobia patients are slow in responses to phobia-related words in the emotional Stroop color- naming task. These interferences in color-naming were considered to be produced by processing of anxiety-and-fear-related words. This study investigated whether the emotional Stroop effects were observed in negative mood states caused by experimental mood induction. The subjects' mood was manipulated by music with negative emotional tone. Stimulus words with positive, negative, and neutral affective valences were selected for each participant. The emotional Stroop task included 120 trials of four experimental conditions (positive words, negative words, neutral words, and color patch). As a result, it was found that reaction time to all types of stimuli in the negative mood group was shorter than that in the neutral mood group. Also, the participants in the neutral mood group showed slower reaction time to word conditions (positive, negative, and neutral) compared to the color patch condition. These results suggested that semantic processing of stimulus words interfered the color-naming task in the neutral mood group. On the other hand, the interference disappeared in the negative mood group. We speculate that the range of attentional focus of the participants was narrowed by induced negative mood and that they concentrated on the required task, the color naming.