Volume 15, Issue 3 (vol-3 2009)                   Horizon Med Sci 2009, 15(3): 36-44 | Back to browse issues page

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Tavousi M, Heidarnia A, Montazeri A, Taremian F, Akbari H, Haeri A. Distinction Between Two Control Constructs: An Application of the Theory of Planned Behavior for Substance Abuse Avoidance in Adolescents. Horizon Med Sci. 2009; 15 (3) :36-44
URL: http://hms.gmu.ac.ir/article-1-693-en.html
1- , hidarnia@modares.ac.ir
Abstract:   (10697 Views)
Background and Aim: The aim of this project is to distinguish between self-efficacy (S-E) and perceived behavior control (PBC) in an application of theory of planned behavior (TPB) for the prevention of substance abuse in male adolescents. Materials and Methods: A measure consisting of TPB and control constructs for substance abuse avoidance which contained 34 items was developed and then administered to a sample of adolescents (N=303) in Tehran, Iran. After estimating reliability and validity, exploratory factor analysis and path analysis were carried out to examine the study objectives. Results: All the 303 young male adolescents, aged 15-19, were entered into the study and completed the questionnaires. The exploratory factor analysis led the control items to two factors: PBC and S-E. Path analysis indicated a good fitness for TPB while distinguishing between the two control constructs. Moreover, S-E becomes the most powerful predictor for intention, (with non-significantly prediction of behavior) [ß= 0.29], and PBC becomes the most powerful predictor for behavior (with the most weakness prediction of intention) [ß= 0.36]. Conclusion: The results of this research provide another document for distinguishing between perceived behavioral control and self-efficacy.
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Type of Study: Original | Subject: Basic Medical Science
Received: 2010/02/15 | Published: 2009/10/15
* Corresponding Author Address: Department of Health Education, Tarbiat Modares University, Tehran , Iran.

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