| Resumo: | The Striving to Avoid Inferiority Scale (SAIS) assesses beliefs about the need to compete or struggle to avoid inferiority. In a sample of 2411 subjects from general population, it was verified a two-factor structure for both SAIS part one – insecure striving and secure non-striving – and SAIS part three – drive for and avoidance of competition. The three parts present high internal consistency and moderate to high item-total correlations. The construct validity was verified through the correlation analysis with measures of social ranking, social group attachment, perfectionism, and anxiety, depression and stress symptomatology. The scale presents good temporal stability. This is a useful measure for the assessment of eating disorders, and it discriminated a clinical sample of 91 patients with eating disorders from a sample of 102 participants from general population. The results are discussed considering the existent literature.
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