The present study aimed at elucidating the mechanism of feedback information for anxiety reduction when a subject with anxiety disorders was given a task requiring the reduction of SCL-i. e. an anxiety reduction task-while exposed to SCL feedback information. The study showed that feedback information worked as an anxiety arousing stimulus for a subject complaining of anxiety symptoms; but when exposed to anxiety reducing stratagies, the arousal of the subject's anxiety weakened. It was also found that feedback informations worked in two ways: (1) as an anxiety arousing stimulus by the cognition that this particular information was the information concerning anxiety, and (2) either as an anxiety arousal stimulus or an anxiety reducing stimulus depending on the content of information implied in the feedback.