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Planning is assumed to translate intentions into health behaviors. However, this may fail due to a lack of perceived self-efficacy. People do not tackle challenging tasks if they harbor self-doubts, even if they have made a good action plan. The present two descriptive longitudinal studies are designed to examine the putative moderating role of self-efficacy in the planning-behavior relationship. In Study I (N = 534 Chinese adolescents), intentions were assessed at baseline, whereas planning, self-efficacy, and physical activity were measured four weeks later. In Study II, 620 Polish adolescents filled out questionnaires assessing physical activity, intentions, planning, and selfefficacy with a 10-week follow-up assessment of physical activity. A moderated mediation model was examined. Planning was specified as a mediator between intentions and behavior, whereas self-efficacy was specified as a moderator of the planningbehavior relationship. Results confirm that levels of self-efficacy moderate the mediation process. The strength of the mediated effect (intention via planning on behavior) increased along with levels of self-efficacy. These results remained valid after accounting for baseline physical activity. For planning to mediate the intention-behavior relation,might be in vain. Implications for theory advancement and intervention development are discussed.

Item Type:	Refereed Article
Research Division:	Psychology and Cognitive Sciences
Research Group:	Psychology
Research Field:	Health, Clinical and Counselling Psychology
Objective Division:	Health
Objective Group:	Public Health (excl. Specific Population Health)
Objective Field:	Behaviour and Health
UTAS Author:	Mallach, N (Dr Natalie Schuez)
ID Code:	79635
Year Published:	2010
Web of Science® Times Cited:	34
Deposited By:	Medicine (Discipline)
Deposited On:	2012-09-25
Last Modified:	2015-02-06
Downloads:	6 View Download Statistics