Longitudinal tests of the theory of planned behaviour: A meta-analysis

In a meta-analysis of longitudinal analyses the theory planned behaviour, we tested series extended or auxiliary theory-consistent hypotheses: construct stability, predictions within and between occasions, consistency over time stationarity in effects reciprocal among constructs. We also moderators on effects: measurement lag, health behaviour type (protection, risk) specific behaviours (alcohol, dietary physical activity). A systematic search identified 87 studies eligible for inclusion. Meta-analytic structural equation models supported stability occasions. Only perceived behavioural control–intention effect exhibited stationarity. found little evidence effects, were small after accounting effects. observed behaviour-type moderators, but no variation model lag moderators. Findings advance knowledge correlates intentional associated processes time.