Abstract
The present study aimed to develop a Three Senses of the Selves Questionnaire (TSSQ) and confirm its reliability and validity. Furthermore, the functions involved in the 3 selves were examined in order to identify more appropriate behavior classes (sets of behaviors with similar functions) than the 3 conventional behavioral processes. A new questionnaire, comprised of 33 items, was completed by college students. Exploratory factor analysis indicated that the Three Senses of the Selves Questionnaire had a 4-factor pattern: "acting actively and flexibly in the world," "conceptualized self," "distancing from private events," and "feeling the present moment." Additional structural equation modeling indicated that the 3 selves had 2 valid behavioral classes. Cronbach's α for all the factors was sufficiently high (α=.72-.83), and the questionnaire met the standards for content and convergent validity. Future studies should examine the relations between the 3 selves and other behavioral processes relevant to Acceptance and Commitment Therapy (ACT) and various clinical symptoms, and develop an understanding of how these senses of the 3 selves aggravate or assuage mental pain.