Motivation is not enough: Prediction of risk behavior following diagnosis of coronary heart disease from the theory of planned behavior

Derek Johnston, Marie Johnston, Beth Pollard, Ann-Louise Kinmonth, David Mant

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Perceived behavioral control (PBC) and intention, the proximal predictors from the theory of planned behavior (TPB), were used to predict cardiovascular risk behaviors in 597 patients I year after diagnosis with coronary heart disease. The outcome measures were self-report measures of exercise plus objective measures of fitness (distance walked in 6 min) and cotinine-confirmed smoking cessation. In multivariate analyses incorporating both PBC and intention, PBC predicted exercise, distance walked, and smoking cessation, but intention was not a reliable independent predictor of any health behavior measured. Thus, the effective theoretical component of the TPB was PBC. Similar predictions could derive from social-cognitive theory. In coronary patients, behavioral change needs to address issues of action implementation rather than motivational factors alone.

Original languageEnglish
Pages (from-to)533-538
Number of pages6
JournalHealth Psychology
Issue number5
Publication statusPublished - Sep 2004


  • Aged
  • Angina Pectoris
  • Behavior Therapy
  • Coronary Disease
  • England
  • Exercise
  • Female
  • Follow-Up Studies
  • Health Behavior
  • Health Knowledge, Attitudes, Practice
  • Humans
  • Internal-External Control
  • Male
  • Middle Aged
  • Motivation
  • Multivariate Analysis
  • Myocardial Infarction
  • Outcome Assessment (Health Care)
  • Physical Fitness
  • Recurrence
  • Risk-Taking
  • Smoking Cessation

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