Model | Author | Meta-analyses examining the model | Evidence supporting theory |
---|---|---|---|
Biomedical | Â | None identified (NI) | Â |
BLT | Skinner, 1953 | NI | Â |
Communication | Â | NI | Â |
HBM | Rosenstock et al. 1966 | 1. 30 2. 31 | 1. 46 studies- substantial empirical support. 2. 16 studies; at best 10% of variance accounted for by any one dimension of the theory. |
SCT | Bandura 1950's | 38 | 27 studies; self-efficacy explained between 4% and 26% of variance |
TRA | Fishbein & Ajzen, 1975 | 41 | Theory explains about 25% of variance in behaviour from intention alone, and explains slightly less than 50% of variance in intentions. |
TPB | Fishbein & Ajzen, 1975 | 1.43 2. 44 3. 45 | 1. 13 studies; 75% of interventions effected a change in behaviour in desired direction. 2. 56 studies; About a third of the variations in behaviour can be explained by the combined effect of intention and perceived behavioural control in the domain of health. 3. 185 independent empirical tests: combined effect of intention and perceived behavioural control explained about a third of variation in behaviour. Theory can explain 20% of prospective measures of actual behaviour. |
PMT | Rogers, 1975 | 35 | 65 studies – Moderate effects in predicting behaviour. |
Self-regulation | Leventhal et al. 1980 | NI | Â |
IMB | Fisher and Fisher 1992 | NI | Â |
TTM | Prochaska & DiClemente 1983 | 1. 58 2. 59 | 1. Stage based interventions not more effective at increasing smoking cessation than non-stage based interventions. 2. 91 independent samples. Results support that individuals use all 10 processes of change. |