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Intention to Use Dietary Supplements: The Role of Self-Identity and Past Behavior in the Theory of Planned Behavior

Kiefer, David J.
http://rave.ohiolink.edu/etdc/view?acc_num=miami1218136960

Abstract Details

2008, Master of Arts, Miami University, Speech Communication.
The purpose of this study was to investigate individuals’ motivations to take dietary supplements using the Theory of Planned Behavior (TPB). In addition to the standard TPB constructs, self-identity and past behavior were tested as additional variables to increase the theory’s predictive power, and because of conflicting past research, the interaction between self-identity and past behavior was examined. The results of this study indicated that two TPB constructs – attitudes and subjective norms – were independent predictors of individuals’ intentions to use dietary supplements. Additionally, this study found that that self-identity and past behavior independently predicted intention and captured additional variance not accounted for by the standard TPB constructs. Furthermore, this study found that self-identity was a stronger predictor of behavioral intention at lower levels of past behavior rather than at higher levels. Practical implications and suggestions for future research are discussed.
Judith Weiner, PhD (Advisor)
Marjorie Keeshan Nadler, PhD (Committee Member)
James Patterson, PhD (Committee Member)
56 p.
Communication; Health
Theory of Planned Behavior; Theory of Reasoned Action; Dietary Supplements; Self-Identity; Past Behavior

Recommended Citations

Citations

  • Kiefer, D. J. (2008). Intention to Use Dietary Supplements: The Role of Self-Identity and Past Behavior in the Theory of Planned Behavior [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1218136960

    APA Style (7th edition)

  • Kiefer, David. Intention to Use Dietary Supplements: The Role of Self-Identity and Past Behavior in the Theory of Planned Behavior. 2008. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1218136960.

    MLA Style (8th edition)

  • Kiefer, David. "Intention to Use Dietary Supplements: The Role of Self-Identity and Past Behavior in the Theory of Planned Behavior." Master's thesis, Miami University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=miami1218136960

    Chicago Manual of Style (17th edition)

miami1218136960
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© 2008, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.