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Predicting Intended and Self-perceived Sugar Restriction among Tanzanian Students using the Theory of Planned Behavior

A. N. Åstrøm

University of Bergen, Norway

This study examines the applicability and sufficiency of the Theory of Planned Behavior (TPB) in predicting intention and self-perceived behavior with respect to avoiding between-meal intake of sugared snacks and drinks. One thousand one hundred and twenty-three Tanzanian students (mean age 26.4 years) completed self-administered questionnaires designed to measure the components of the TPB during May–July, 1999. Self-perceived sugar consumption was obtained in a subsample of respondents (n = 228) four weeks later. The TPB provided a significant prediction of intention (R²= 0.44), with attitude (= 0.25), subjective norms (= 0.28) and perceived behavioral control (= 0.35) significant, and subsequent behavior (R² = 0.15, with intention (= 0.25) and perceived behavioral control (= 0.18) significant. Frequency of past behavior explained a significant, albeit small, amount of additional variance in intention (1 percent) and behavior (4 percent). The results indicate that the TPB is applicable to the prediction of food choice-related intention and behavior among young adult students living in a non-occidental setting.

Key Words: past behavior • self-perceived avoidance of sugared snacks • sufficiency of TPB

Journal of Health Psychology, Vol. 6, No. 4, 435-445 (2001)
DOI: 10.1177/135910530100600406


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