抄録
This study was conducted to examine the competency of Kokoyakyu (Japanese high-school baseball) managers by developing and then applying a suitable measurement scale. First, we interviewed six Kokoyakyu managers, identifying 245 competency items. To categorize these items, one professor and four graduate students in sport sociology conducted a panel discussion. This yielded 48 competency items that were divided into 10 categories. Second, to appraise the reliability and validity of the resulting scale, we sent questionnaires to 1,000 managers, and received 421 replies. Item-total correlation analysis, exploratory factor analysis, and confirmatory factor analysis revealed six factors comprising 24 competency items: (1) trust relationship (six items), (2) powers of observation (four items), (3) educational guidance (three items), (4) autonomy support (four items), (5) relationship of supporters (three items), and (6) skill and tactics instruction (four items). The indices of model data fit were χ2/df=1.72, GFI=.87, CFI=.90, and RMSEA=.058. Assessment of construct validity comprised three components: convergent validity (Cronbach's alpha, average variance extracted, and construct reliability), discriminant validity, and content validity. The scale was observed to be reliable and valid. Comparison of the scale based on managers' profiles indicated significant differences based on team results, experience in developing players on the path to professional baseball, and years of experience.
