The theory of planned behaviour and discrete food choices: a systematic review and meta-analysis

International Journal of Behavioral Nutrition and Physical Activity

Review

Don Iverson¹  Rajeev Sharma²  Alexander Svenson²  Madalyn Oliver²  Máirtín S. McDermott³  Tim Coltman⁴  Eleanor J. Beck⁵  Thomas Simnadis⁵  Peter Caputi⁶ 

[1]Faculty of Health, Arts and Design, Swinburne University of Technology, 3122, Melbourne, VIC, Australia

[2]School of Computing and Information Technology, Faculty of Engineering and Information Sciences, University of Wollongong, 2522, Wollongong, NSW, Australia

[3]School of Computing and Information Technology, Faculty of Engineering and Information Sciences, University of Wollongong, 2522, Wollongong, NSW, Australia

[4]Centre for Health and Social Research (CHaSR), Australian Catholic University, Melbourne, Victoria, Australia

[5]School of Management, Operations and Marketing, Faculty of Business, University of Wollongong, 2522, Wollongong, NSW, Australia

[6]School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, 2522, Wollongong, NSW, Australia

[7]School of Psychology, Faculty of Social Sciences, University of Wollongong, 2522, Wollongong, NSW, Australia

关键词: Discrete food choice;    Theory of reasoned action;    Theory of planned behaviour;    Systematic review;    Meta-analysis;   

DOI  :  10.1186/s12966-015-0324-z

 received in 2015-09-22, accepted in 2015-12-19,  发布年份 2015

来源: Springer

【 摘 要 】

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. 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 primary aim of the current review was to examine the association between TPB variables and discrete food choice behaviours. A systematic literature search was conducted to identify relevant studies. Calculation of the pooled mean effect size (r+) was conducted using inverse-variance weighted, random effects meta-analysis. Heterogeneity across studies was assessed using the Q- and I2-statistics. Meta-regression was used to test the impact of moderator variables: type of food choice behaviour; participants’ age and gender. A total of 42 journal articles and four unpublished dissertations met the inclusion criteria. TPB variables were found to have medium to large associations with both intention and behaviour. 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). The association between intention and behaviour was r+ = 0.45 and between PBC and behaviour was r+ = 0.27. Moderator analyses revealed the complex nature of dietary behaviour and the factors that underpin individual food choices. Significantly higher PBC-behaviour associations were found for choosing health compromising compared to health promoting foods. Significantly higher intention-behaviour and PBC-behaviour associations were found for choosing health promoting foods compared to avoiding health compromising foods. Participant characteristics were also found to moderate associations within the model. Higher intention-behaviour associations were found for older, compared to younger age groups. The variability in the association of the TPB with different food choice behaviours uncovered by the moderator analyses strongly suggest that researchers should carefully consider the nature of the behaviour being exhibited prior to selecting a theory.

【 授权许可】

CC BY   
© McDermott et al. 2015