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Intention‐behaviour models specify as a boundary condition that the intention‐behaviour relationship should be measured over a short period of delay. However, a measure of intention that exists just prior to performance of the behaviour has limited feasibility and practical utility. Using meta‐analysis, the present study explores the relationship between time and the intention‐behaviour (I‐B) correlation in Fishbein and Ajzen's intention‐behaviour models. Self‐reported behaviours, how intention is measured, and type of behaviour are explored as moderators to this relationship. The average I‐B correlation coefficient remains strong over a prediction interval of as long as 15 years. The I‐B correlation is significantly influenced by the use of self‐report measures of behaviour over time and type of behaviour; however, it is not influenced by how intention is measured.
Randall et al. (Thu,) studied this question.