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Publication
Adaptação e validação da versão portuguesa do Meaning of Food in Life Questionnaire (MFLQp)
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| 1.06 MB | Adobe PDF |
Advisor(s)
Abstract(s)
Para além da satisfação de uma necessidade fisiológica, a comida assume uma
diversidade de significados na vida das pessoas (e.g., social ou moral), que têm mostrado estar
associados à escolha e comportamentos de consumo alimentares. A presente investigação teve
como objetivos: i) traduzir e adaptar o Meaning of Food in Life Questionnaire (MFLQ) para a
língua portuguesa; e ii) analisar as suas propriedades psicométricas. Com base nas respostas a
um estudo piloto inicial e revisão da literatura, foi proposta uma nova dimensão de
significado da comida na população portuguesa–a da Identidade cultural. A versão portuguesa
do MFLQ (MFLQp) com a sua nova dimensão foi testada em dois estudos. No Estudo 1 (N =
152), na Análise Fatorial Exploratória (AFE) efetuada à versão preliminar do MFLQp
emergiram os seis fatores esperados, todos com bons indicadores de consistência interna (α ≥
.72). Com base nos resultados obtidos, o questionário foi refinado. No Estudo 2 (N = 270), a
estrutura fatorial da versão final do MFLQp foi confirmada, tendo as dimensões apresentando
uma boa fiabilidade compósita. Além disso, os fatores do MFLQp apresentaram correlações
esperadas com variáveis teoricamente relacionadas, fornecendo evidência da sua validade
convergente externa. No geral, a versão adaptada do MFLQ revelou boas propriedades
psicométricas e evidenciou a validade e fiabilidade da dimensão de Identidade cultural.
Limitações, estudos futuros e implicações para a alteração do comportamento alimentar são
discutidos.
ABSTRACT: More than the satisfaction of a physiological need, food takes on a variety of meanings in people's lives (e.g., social or moral) which have been shown to be associated with food choice and consumption behaviors. This research aimed to: i) translate and adapt the Meaning of Food in Life Questionnaire (MFLQ) into Portuguese; and ii) analyze its psychometric properties. Based on the responses to an initial pilot study and review of the literature a new dimension of the meaning of food was proposed for the Portuguese population - Cultural identity. The Portuguese version of the MFLQ (MFLQp) with its new dimension was tested in two studies. In Study 1 (N = 152) the Exploratory Factor Analysis (EFA) carried out on the preliminary version of the MFLQp revealed the six expected factors, all with good internal consistency indicators (α ≥ .72). Based on the obtained results the questionnaire was refined. In Study 2 (N = 270) the factor structure of the final version of the MFLQp was confirmed, with the dimensions showing good composite reliability. In addition, the MFLQp factors showed expected correlations with theoretically related variables, providing evidence of their external convergent validity. Overall, the adapted version of the MFLQ showed good psychometric properties and evidenced the validity and reliability of the Cultural identity dimension. Limitations, future studies and implications for eating behavior change are discussed.
ABSTRACT: More than the satisfaction of a physiological need, food takes on a variety of meanings in people's lives (e.g., social or moral) which have been shown to be associated with food choice and consumption behaviors. This research aimed to: i) translate and adapt the Meaning of Food in Life Questionnaire (MFLQ) into Portuguese; and ii) analyze its psychometric properties. Based on the responses to an initial pilot study and review of the literature a new dimension of the meaning of food was proposed for the Portuguese population - Cultural identity. The Portuguese version of the MFLQ (MFLQp) with its new dimension was tested in two studies. In Study 1 (N = 152) the Exploratory Factor Analysis (EFA) carried out on the preliminary version of the MFLQp revealed the six expected factors, all with good internal consistency indicators (α ≥ .72). Based on the obtained results the questionnaire was refined. In Study 2 (N = 270) the factor structure of the final version of the MFLQp was confirmed, with the dimensions showing good composite reliability. In addition, the MFLQp factors showed expected correlations with theoretically related variables, providing evidence of their external convergent validity. Overall, the adapted version of the MFLQ showed good psychometric properties and evidenced the validity and reliability of the Cultural identity dimension. Limitations, future studies and implications for eating behavior change are discussed.
Description
Dissertação de Mestrado realizada
sob a orientação de Professora
Doutora Maria João Gouveia e
Professor Doutor Filipe Loureiro,
apresentada no Ispa – Instituto
Universitário para obtenção de
grau de Mestre na especialidade de
Psicologia da Saúde.
Keywords
Adaptação psicométrica Significado da comida Identidade cultural Comportamento alimentar MFLQ Psychometric adaptation Meaning of food Cultural identity Eating behavior MFLQ