Alexithymia is characterized by difficulties in identifying and describing feelings and a tendency toward externally oriented thinking. This study investigated the relationship between alexithymia and dream emotions among 282 Japanese adults using the 20-item Toronto Alexithymia Scale (TAS-20), the Japanese version of the Mannheim Dream Questionnaire (MADRE), and a Most Recent Dream report including subjective ratings of eight specific emotions. The analysis revealed that higher alexithymia scores were modestly but consistently associated with a more negative overall emotional tone of dreams, higher nightmare frequency, greater nightmare distress, and a higher frequency of dreams affecting daytime mood. Subjective ratings of the Most Recent Dream further indicated that individuals with higher alexithymia tendencies experienced more intense negative emotions, such as anger, sadness, and confusion/shock,whereas no significant association was found with positive dream emotions. These findings may be explained by the continuity hypothesis and the affect network dysfunction model, suggesting that waking emotional tendencies may be reflected in dream content and emotional processing during sleep.
Yui Yoshioka (Thu,) studied this question.
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