The Japanese version of the "Regret and Maximization Scale" (JRMS) can predict the individual difference in the style of decision-making. However, according to two previous studies that examined the reliability and validity of the JRMS, the reliability was not very high. In addition, the factor validity needs to be examined because the number of common factors the JRMS might consist of was ambiguous. The present study tested the factorial pattern of the JRMS using voluntary panel Web surveys. We conducted an exploratory factor analysis on 1,121 samples in Study 1 and a confirmatory factor analysis on 480 samples in Study 2. Both analyses showed that the JRMS consists of three factors: regret for one's life, regret for purchase, and maximization. These results verified the factor validity of the JRMS. Each subscale showed an acceptable level of internal consistency. Each factor index positively correlated with each other, and also positively correlated with the age of participants. We discussed the reason why regret was divided into two categories, and the applicability of the JRMS to other studies.
The purpose of this study was to improve the Japanese version of the Television Affinity Scale (TAS), and to examine the relationship between affinity for television and viewing behavior. Data was based on a random sample of 552 people in Hachioji City (Tokyo, Japan); the response rate was 55.2%. The results revealed the following: (a) the TAS 6-item version had sufficient reliability and validity, (b) the TAS provided information which could not be explained directly by demographic factors, and (c) affinity for television was positively correlated with unplanned and non-concentrated television viewing. These results are consistent with the findings of Erikawa, Yamada, Kawabata, and Numazaki (2007). In addition, the TAS scores correlated positively with entertainment program viewing. This is consistent with the findings of Rubin (1984) that television affinity correlated with ritualized television viewing. The implications of these results for contemporary television viewing are discussed.
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