Development and Validation of Sport Aggression Styles Inventory: An instrument based on Millon’s personality theory
Anger is a basic emotion that it is known as popular phenomenon. Aggression is any verbal or physical behavior that proceed from anger and it has intentional or unintentional destructive dimension. These behavior can express to self or another object actively or passively. The aim of present study was development and validation of Sport Aggression Style Inventory (SASI). This instrument have developed based on Millon personality theory.
The sample include 99 participants that they randomly selected from 284 athletes which they selected in snowball sampling method, and they completed Sport Aggression Style Inventory (SASI) twice in two week. Data were analyzed in SPSS, AMOS and Smart-PLS environments.
The results of this study illustrate, the inventory has good internal consistency according to Cronbach's alpha for subscale as sadistic aggression style (external-active, ά=0.62), passive aggression style (external-passive, ά=0.84), masochistic aggression style (internal-active, ά=0.84), somatic aggression style (internal-passive, ά=0.82), and total score (ά=0.72); and good test-retest reliability in the SASI's subscales in a 2-week period (0.70-0.81). The Confirmatory Factor Analysis supported four factors model of SASI; and finally the results indicate that the SASI has acceptable convergent validity, discriminant validity, and composite reliability.
According to the present findings, The SASI has acceptable validity and reliability. Implications for research and clinical applications of the SASI in an Iranian athletic population is discussed.
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