Validação de um instrumento de preocupação com a forma corporal aplicado a estudantes universitárias

• Autor(a) principal: Silva, Wanderson Roberto da [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/110795
• topic: Imagem corporal; Corpo - Peso; Antropometria; Corpo - Tamanho; Autopercepção; Body weight

Aims: present a theoretical approach on the body image, through literature review, highlighting the body shape concern and the psychometric properties of the Body Shape Questionnaire (BSQ). Estimate the validity, reliability and factorial invariance of the BSQ, in different versions (complete and short) and factorial models, when applied to a sample of Brazilian female university students. Identify the contribution of sociodemographic and labor variables and of the body mass index (BMI) in the concern with body image. Methods: Bibliographic survey of the studies published in the last 25 years (1987-2012) available in full in the databases Pubmed, Bireme e Scielo. To the BSQ’s different versions and factorial models, found in the literature, were estimated the validities of content, factorial, convergent, discriminant, concurrent and divergent. The items of the instrument were evaluated by psychometric sensitivity (summary measures) and by factor weights (λ). The Content Validity Ratio (CVR) was computed to estimate the content validity. Confirmatory factor analysis was conducted and used as goodness-of-fit indices the chi-square by degrees of freedom ratio (2/df), the Comparative Fit Index (CFI), the Normed Fit Index (NFI) and the Root Mean Square Error of Approximation (RMSEA). Convergent validity was estimated by Average Variance Extracted (AVE) and Composite Reliability (CR). To check the discriminant validity of the models presented with more than one factor, the coefficient of determination (r2) was used. Concurrent validity and divergent of the BSQ were estimated by Correlational Analysis (r) and Principal Components Analysis (PCA) between the BSQ and the instruments Weight Concerns Scale (WCS) and the Maslach Burnout Inventory for Students (MBI-SS), respectively. The standardized Cronbach's alpha coefficient (α) was calculated to estimate the internal consistency. To check the stability of BSQ’s factor solution was ...