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Validity of Cognitive Predictors of Adolescent Sugar Snack Consumption

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Objective: To estimate the applicability of an extended version of the theory of planned behavior (TPB) in predicting self-perceived sugar intake among adolescents in Uganda. Method: Two questionnaires were completed involving 1146 and 372 secondary school adolescents. Confirmatory factor and path analyses were performed using Amos software. Results: TPB exhibited good fit with the data χ2=1.29, df=2, P=0.53) and explained 58% and 5% of the variance in intention and self-perceived behavior. Adding past behavior increased the explained variance of behavior with 4%. Conclusion: When applied to consumption of sugared snacks among Ugandan adolescents, the TPB shows satisfactory validity.

Keywords: construct validity; predictive validity; sugar consumption; theory of planned behavior

Document Type: Research Article


Affiliations: Centre for International Health, Institute of Odontology-Community Dentistry, Bergen, Norway.

Publication date: March 1, 2004

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  • The American Journal of Health Behavior seeks to improve the quality of life through multidisciplinary health efforts in fostering a better understanding of the multidimensional nature of both individuals and social systems as they relate to health behaviors.

    The Journal aims to provide a comprehensive understanding of the impact of personal attributes, personality characteristics, behavior patterns, social structure, and processes on health maintenance, health restoration, and health improvement; to disseminate knowledge of holistic, multidisciplinary approaches to designing and implementing effective health programs; and to showcase health behavior analysis skills that have been proven to affect health improvement and recovery.

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