SHORT-TERM VERBAL MEMORY AND THE PSYCHOPHYSIOLOGICAL RESPONSE TO EMOTION - RELATED WORDS IN CHILDREN WHO STUTTER
Abstract
Emotions play a significant role in fluency disorders. In this research we wanted to examine immediate and delayed verbal memory for auditory presented words that carry informations about different emotional state (emotion-related words) and emotionally neutral words in children who stutter. Leaning on word semantic only, we wanted to eliminate emotional verbal expresion of words as a factor that can influence memory abillities. In addition, we wanted further to examine skin conductance measure as an indicator of autonomic nervous system arousal during short-term memory task for emotion-related and emotionally neutral words. Parental questionnaire was applied within parents of children who stutter in order to collect data regarding stuttering severity in emotionally arousing situations in everyday life. Differences between experimental (children who stutter) and control group in global memory capacity are highest in immediate memory task with the tendency for lowering statistical significance with prolongation of retention interval. According to the questionnaire results, children who stutter show a higher degree of stuttering in situations with a positive emotional valence. Skin conductance measurements showed higher autonomic nervous system arousal during perception and free recall of positive emotion-related words in children who stutter when compared to negative and emotionally neutral words. Results indicate higher emotional arousal to positive emotions in children who stutter, leading to either less fluent speech or suppression of verbal short-term memory capacity.
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