Social support can be defi ned as the perception that there are people who provide individuals with emotional or even fi nancial resources. Perceived social support relates to the perception that support is available if the individual needs it. The present study's aim was to discover, within the Brazilian context, preliminary validity evidence as to the scores of the Multidimensional Scale of Perceived Social Support. The survey involved 831 workers of both sexes, who answered the preliminary version of the scale's questionnaire, containing 12 items. Factor analysis demonstrated that the Brazilian version preserved the original instrument's items and factors (family, friends and signifi cant others). Multigroup analysis demonstrated confi gural, metric and scalar invariance between groups classifi ed by sex and occupational category (professionals in the areas of exact sciences and humanities). The data we obtained in the present study led us to the conclusion that the scale is an instrument with evidence of internal structure validity, thus permitting its use in future research.Keywords: Social networks, scaling, statistical validity. Propriedades Psicométricas da Escala Multidimensional de Suporte Social PercebidoResumo O suporte social pode ser defi nido como a percepção de que existem pessoas que proporcionam ao indivíduo recursos afetivos ou, até mesmo, fi nanceiros. O suporte social percebido relaciona-se à percepção de que o suporte encontra-se disponível, caso o indivíduo dele necessite. O objetivo desta pesquisa é buscar evidências iniciais de validade dos escores da Escala Multidimensional de Suporte Social Percebido, no contexto brasileiro. Participaram do estudo 831 trabalhadores, de ambos os sexos, que responderam à versão inicial da escala, contendo 12 itens. As análises fatoriais evidenciaram que a versão brasileira manteve os itens e os fatores do instrumento original (família, amigos e outros signifi cantes).As análises multigrupos atestaram a invariância confi gural, métrica e escalar entre os grupos divididos quanto ao gênero e à categoria ocupacional (profi ssionais das áreas exatas e humanas). Os dados obtidos na presente pesquisa permitiram a conclusão de que a escala é um instrumento com evidências de validade de estrutura, o que possibilita seu uso em situações futuras de pesquisa. Palavras-chave:Redes sociais, escalas, validade estatística.
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