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espanolO objetivo deste trabalho e apresentar estudos de validacao do Interpersonal Needs Questionnaire (INQ-15) para a populacao portuguesa. Este instrumento operacionaliza os constructos percecao de ser um fardo e sentimentos de nao pertenca de acordo com a Teoria Psicologica Interpessoal do Suicidio de Joiner (2005). No primeiro estudo, a Analise em Componentes Principais demonstrou a existencia de tres fatores e verificou-se igualmente uma adequada consistencia interna, validade convergente e validade referenciada pelo criterio risco suicidario. O segundo estudo permitiu demonstrar a validade preditiva das escalas do INQ15 a cinco meses e a validade referenciada pelo criterio ideacao suicida. No terceiro, os resultados apoiam a validade discriminante das escalas do INQ-15 e confirmam a estrutura fatorial de tres fatores, obtida no primeiro estudo. No ultimo estudo, foi confirmada a estabilidade temporal das duas escalas do INQ-15 com 2 semanas de intervalo. EnglishThe aim of this research is to validate the Interpersonal Needs Questionnaire (INQ-15) for the Portuguese population. This measure assesses perceived burdensomeness and thwarted belongingness according to Joiner’s (2005) Interpersonal-Psychological Theory of Suicide. In the first study, Principal Component Analysis demonstrated the existence of three factors and was also demonstrated an adequate internal consistency, convergent validity and criterion related to validity, using suicide risk as criteria. The second study demonstrated the predictive validity of the INQ-15 scales at five months and the criterion related to validity using suicide ideation as criteria. In the third study, results support the discriminant validity of the INQ-15 scales and confirm the factorial structure of three factors, obtained in the first study. In the last study, the temporal stability of the two INQ-15 scales within a 2 weeks interval was confirmed.

Estudos de Validação do Interpersonal Needs Questionnaire (INQ-15) para a População Portuguesa