This study aimed to investigate whether sadism is related to high competitive performance and whether this relationship is mediated by gamesmanship. Responses to sadism and gamesmanship scales of 339 university students majoring in physical education were analyzed. Results showed that sadism is significantly related to high competitive performance in relative competitions, and that this relationship is mediated by gamesmanship. Our findings suggest that sadism has positive aspects, despite its negative ones. This study contributes to the development of an accurate understanding of sadism.
The Global Assessment of Internet Trolling- Revised (GAIT-R) has been developed to assess internet trolling. We developed the Japanese version of GAIT-R (J-GAIT-R). First, the eight items of GAIT-R were translated into Japanese. Then, we conducted an online survey of Japanese people (N = 535). In Study 1, exploratory and confirmatory factor analyses indicated that J-GAIT-R had a unidimensional structure. The internal consistency of J-GAIT-R was adequate. Moreover, partial correlation coefficients indicated adequate concurrent validity of the scale. In Study 2, we confirmed a good test-retest reliability for J-GAIT-R. It was concluded that J-GAIT-R was suitable for assessing internet trolling in Japan.