1 / 14

Theory of Planned Behavior

Theory of Planned Behavior. Article Review Evan Hilberg. Article Review. A Test of the Theory of Planned Behavior to Explain Physical Activity in a Large Population Sample of Adolescents from Alberta, Canada Journal of Adolescent Health, 2011 Plotnikoff , Lubans , Costigan , et.al.

Download Presentation

Theory of Planned Behavior

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Theory of Planned Behavior Article Review Evan Hilberg

  2. Article Review • A Test of the Theory of Planned Behavior to Explain Physical Activity in a Large Population Sample of Adolescents from Alberta, Canada • Journal of Adolescent Health, 2011 • Plotnikoff, Lubans, Costigan, et.al.

  3. Theory of Planned Behavior • Social-cognitive theory used to explain PA behaviors • A person’s intention to perform a behavior is the central determinant • Intention determined by attitude, social norms, and perceived control • Attitude- • Norms- • Perceived control-

  4. Introduction/Purpose • TBP hasn’t been tested extensively in adolescent populations • Primary objective- • Explore the power of TBP to explain PA behaviors in adolescents • Alternative objectives- • Explore moderating effects of gender • Explore mediating effects of intention

  5. Methodology • Validated, short measures of TBP constructs (att, norms, intent) • Attitude- 2 item construct (enjoyment and importance) • Subjective Norms- “Most people important to me think I should take part in regular PA”

  6. Methodology • Intention- “I plan to be physically active on a regular basis over the next month” • Perceived behavior control- 4 item self-efficacy measure • Validated PAQ for Older Children used to assess PA levels over 7 days

  7. Methodology • Series of models used to test secondary objectives • Gender was ID as a potential moderator • Unrestricted to fully constrained models • Intention seen as mediator • Analysis of moment structures used to test primary objective • Adjusted for school

  8. Results • Sample reflects overall Alberta population • The model testing revealed an excellent fit to the data • All pathways significant • Model explained 59% and 43% (intention/behavior) • Mediation analyses • Intention found to mediate relationship between variables and PA • All pathways were significant

  9. Results • Moderation analyses revealed excellent fit to the data • Both boys and girls • Further analyses showed stronger relationship among boys in model • Also showed stronger relationship among boys among pathways

  10. Plotnikoff et al’s test of TPB

  11. Discussion • Largest TPB study in youth with a representative sample • Results support the TPB with significance for all construct pathways • Perceived control and intention accounted for 43% of variance of behavior • Attitude, norms, and perceived control explained 59% of the variance for intention

  12. Discussion • Results are consistent with other literature in adult and adolescent populations • Differences existed between genders in the models • Perceived control was strongest correlate of behavior for all • Attitude was strongest correlate of intention for all

  13. Discussion • Mediation assumptions were satisfied for the constructs, although they were small

  14. Class discussion • What does it all mean?? • Implications of overall variances • Implications of mediation and moderation • Implications of gender differences

More Related