Reliability and validity of a self-report emotional expressivity measure: The Japanese version of the Berkeley Expressivity Questionnaire.
OBJECTIVE
This study developed the Japanese version of the Berkeley Expressivity Questionnaire (BEQ), a self-report measure of three emotional expressivity facets, and provided evidence of its reliability and validity.


METHODS
Five hundred and four students answered an online survey. To determine test-retest reliability, 241 of the participants completed the Japanese version of the BEQ again approximately 1 month after initial surveying was completed.


RESULTS
Cronbach's alpha coefficients were 0.83 for the BEQ full scale, and 0.61-0.77 for subscales. Test-retest correlations were 0.61 for the full scale, and 0.57-0.61 for subscales. Construct validity was demonstrated by correlations between BEQ scores and scores on measures of emotional expressivity, self-monitoring, self-esteem, depression, "Big Five" (neuroticism, extraversion, openness, agreeableness, and conscientiousness) personality traits, and emotional control.


CONCLUSIONS
The Japanese version of the BEQ has adequate internal consistency, reliability, and construct validity. Test-retest reliability was lower than that of the original scale. This study was the first in Japan to develop a self-rating questionnaire assessing multiple facets of emotional expressivity.
Department of Adult Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.
Mingming
M
Lin
Department of Adult Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.|Institute of Women's Health, Tokyo Women's Medical University, Tokyo, Japan.|University of Yamanashi, Yamanashi, Japan.
Sayaka
S
Soi-Kawase
National Information Center of Disaster Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.|University of Yamanashi, Yamanashi, Japan.
Ryoko
R
Narita-Ohtaki
Department of Adult Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.
Mariko
M
Itoh
Department of Adult Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.|National Information Center of Disaster Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.
Yoshiharu
Y
Kim
D000328:Adult; D003863:Depression; D004644:Emotions; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D010551:Personality; D012649:Self Concept; D011795:Surveys and Questionnaires; D055815:Young Adult
Berkeley Expressivity Questionnaire; emotional expressivity; health; reliability; validity