Presently, Naikan has been introduced in educational and psychological settings, as same as psychiatric medicine. Moreover, its application has been extended not only cross Japan but also globally. Although Naikan has been actively studied especially after the establishment of the Naikan Association and the publication of its journal, the theoretical basis of Naikan has not been developed satisfactorily. In order to obtain a consensus from researchers worldwide, it may be effective to study Naikan from psychological perspective, for example, by focusing on its cognition.
In this study, a scale was developed to measure the cognitive patterns of Naikan, with subjects who have not experienced Naikan practice. A total of 213 students completed this scale, and 58 of them completed TEG to examine its validity. A principal factor analysis with promax rotation yielded four factors. Cronbach's α was used to evaluate the reliability of this scale, which was determined to be .88. The result of the Pearson correlation between each subscale and TEG was partly consistent with the results of former studies. Further study is required to confirm the validity of this scale.
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