Abstract
This study aimed to develop a Japanese version of the idiosyncratic deals (i-deals) scale. Rosen et al.’s (2013) Ex Post I-Deals Scale was translated
into Japanese. Its factor structure, internal consistency, convergent validity,
discriminant validity, and test-retest reliability were examined in a sample
of full-time employees living in the Tokyo Metropolitan area. Data were
collected at two time points (n=1,201 and n=849 for the first and second
time points, respectively). A confirmatory factor analysis showed the bestfit
indices for the Japanese version of the i-deals scale with the original fourfactor
structure. Internal consistency, convergent validity, discriminant
validity, and test-retest reliability were confirmed by calculating coefficient
alpha, the correlation coefficient between the Japanese i-deals scale and LMX
and organizational commitment, and the correlation coefficients of the data
between two time points, respectively. Results revealed that the Japanese
i-deals scale had sufficient reliability and validity. This study facilitates the
measurement of i-deals in the Japanese population by adapting and validating
the Ex Post I-Deals Scale.
