Protection motivation theory and the prediction of exercise and low-fat diet behaviours among Australian cardiac patients

Predicting the Physical Activity Intention–Behavior Profiles of Adopters and Maintainers Using Three Social Cognition Models

“…Specifically, TPB subjective norm constructs (injunctive norm, descriptive norm) and PMT constructs of fear and vulnerability did not discriminate intention-behavior profiles in a meaningful way. All of these constructs have shown limited utility in past PA literature [31,38,39] and do not appear as critical variables to target in any PA intervention. Our second hypothesis concerned profiles of action control exclusively; it was hypothesized that the behavioral processes of change (TTM) would discriminate adopters better than maintainers, affective attitude (TPB) would show differences between maintainers more than adopters, while perceived behavioral control (TPB), self-efficacy (TTM/PMT), and response efficacy (PMT) would differentiate all action control groupings.…”

“…PMT's three-threat constructs Severity, Vulnerability, and Fear were assessed with three items each based on the measures developed by Plotnikoff and colleagues [31,32] (our measures added the component of diabetes threat). Severity was measured with the following items: "for me, being physically inactive would be a very bad thing," "for me, having heart disease would be a very bad thing," and "for me, having diabetes would be a very bad thing," with a response option of "definitely not" [1] to "definitely yes" [5].…”

Some problems with social cognition models: A pragmatic and conceptual analysis.

“…Castle et al, 1999;Pakenham, Pruss & Clutton, 2000) and those using the PMT found no role for a range of variables (eg. Murgraff, White & Phillips, 1999;Plotnikoff & Higginbotham, 1998). Further, all the papers examined left much of the variance unexplained with explained variance ranging from 1% to 65% for behaviour and 14% to 92% for behavioural intentions.…”

Understanding Australian consumers’ perceptions of selenium and motivations to consume selenium enriched foods

“…PMT has been successfully applied to many health promotion activities and enhancing healthy lifestyle behaviours (for recent reviews see, Floyd, Prentice-Dunn, & Rogers, 2000;Boer & Seydel, 1999). Surprisingly few studies have applied the PMT model to eating behaviours or protection by dietary means (Plotnikoff & Higginbotham, 1995;Plotnikoff & Higginbotham, 1998;Smith Klohn & Rogers, 1991;Wurtele, 1988) but these studies have included investigations of changing dietary behaviour with regard to heart disease and osteoporosis.…”