The explorers 1985 tpb avi
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Higher intention-behaviour associations were found for older, compared to younger age groups. Participant characteristics were also found to moderate associations within the model. Significantly higher intention-behaviour and PBC-behaviour associations were found for choosing health promoting foods compared to avoiding health compromising foods. Significantly higher PBC-behaviour associations were found for choosing health compromising compared to health promoting foods. Moderator analyses revealed the complex nature of dietary behaviour and the factors that underpin individual food choices. The association between intention and behaviour was r + = 0.45 and between PBC and behaviour was r + = 0.27. Attitudes had the strongest association with intention ( r + = 0.54) followed by perceived behavioural control (PBC, r + = 0.42) and subjective norm (SN, r + = 0.37).
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TPB variables were found to have medium to large associations with both intention and behaviour. A total of 42 journal articles and four unpublished dissertations met the inclusion criteria. Meta-regression was used to test the impact of moderator variables: type of food choice behaviour participants’ age and gender. Heterogeneity across studies was assessed using the Q- and I 2-statistics. Calculation of the pooled mean effect size ( r +) was conducted using inverse-variance weighted, random effects meta-analysis. A systematic literature search was conducted to identify relevant studies. The primary aim of the current review was to examine the association between TPB variables and discrete food choice behaviours. Models of behaviour, such as the Theory of Planned Behaviour (TPB) provide conceptual order that allows program designers and policy makers to identify the substantive elements that drive behaviour and design effective interventions. The combination of economic and social costs associated with non-communicable diseases provide a compelling argument for developing strategies that can influence modifiable risk factors, such as discrete food choices.