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Questionário de Crenças de Controlo face à Saúde (QCCS) : Processo de desenvolvimento e validação de um instrumento
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Advisor(s)
Abstract(s)
O presente artigo tem como objectivo a apresentação do processo de desenvolvimento e validação do
Questionário de Crenças de Controlo face à Saúde (QCCS). Este é um instrumento que, tendo como
raiz conceptual o modelo tridimensional da percepção de controlo de Skinner (1995), visa a avaliação
de três tipos de crenças: (1) controlo; (2) estratégia e; (3) capacidade. O QCCS foi aplicado a uma
amostra de 91 crianças (Midade=11,92) e 97 adolescentes (Midade=16,86) Portugueses saudáveis.
Análises em componentes principais mostraram que o instrumento reflecte, na generalidade, a estrutura
tridimensional esperada. Os índices de fidelidade interna da maioria das escalas mostraram-se
adequados, particularmente tendo em conta a idade dos participantes. Uma análise do conteúdo dos
itens, efectuada por dois juízes independentes, atesta a validade de conteúdo do QCCS. Este instrumento,
ao permitir detectar diferenças etárias nas crenças de controlo, previsíveis de um ponto de vista
desenvolvimentista, demonstra ainda validade de constructo. Em suma, embora as características
psicométricas do QCCS possam ainda ser aperfeiçoadas, este mostra ser um instrumento útil e com
qualidades adequadas.
ABSTRACT: This paper presents the process of development and validation of the Health Perceptions of Control Questionnaire (HPCQ). Based on Skinner’s (1995) three-fold model of perceived control, this instrument assesses three types of control-related beliefs: (1) control; (2) strategy; and (3) capacity. The HPCQ was administered to 91 healthy Portuguese children (Mage=11,92) and 97 adolescents (Mage=16,86). A set of principal component analyses showed that, in general, the instrument reflected the expected three-fold structure of beliefs. Most sub-scales showed adequate internal reliability indexes, especially considering participants’ ages. A content analysis of the items done by two independent researchers pointed to an adequate content validity of the instrument. Moreover, the HPCQ showed adequate construct validity, given that it was able to detect age-related differences in control-related beliefs, which may be understood from a developmental perspective. In sum, although some psychometric characteristics of the HPCQ may be perfected, this instrument seems valid and useful.
ABSTRACT: This paper presents the process of development and validation of the Health Perceptions of Control Questionnaire (HPCQ). Based on Skinner’s (1995) three-fold model of perceived control, this instrument assesses three types of control-related beliefs: (1) control; (2) strategy; and (3) capacity. The HPCQ was administered to 91 healthy Portuguese children (Mage=11,92) and 97 adolescents (Mage=16,86). A set of principal component analyses showed that, in general, the instrument reflected the expected three-fold structure of beliefs. Most sub-scales showed adequate internal reliability indexes, especially considering participants’ ages. A content analysis of the items done by two independent researchers pointed to an adequate content validity of the instrument. Moreover, the HPCQ showed adequate construct validity, given that it was able to detect age-related differences in control-related beliefs, which may be understood from a developmental perspective. In sum, although some psychometric characteristics of the HPCQ may be perfected, this instrument seems valid and useful.
Description
Keywords
Crenças de controlo Crianças e adolescentes Questionário Adolescents Children Control-related beliefs Questionnaire
Citation
Laboratório de Psicologia, 6, 93-108
Publisher
Instituto Superior de Psicologia Aplicada