Understanding behaviour change after training is a complex endeavour in science. Although motivation theories provide avenues for understanding why individuals change their behaviour after training, training research has adopted those theories sporadically, resulting in a fragmented understanding of trainee motivation. This study aims to present a unified model for understanding behaviour change after training. The model integrates elements from prevailing motivation theories in three phases: (a) forming transfer intentions, influenced by attitudes, norms, and perceived transfer control, (b) actualizing implementation intentions for transfer, and (c) strengthening transfer commitment. Conceptual and instructional implications for training research are discussed.Keywords: transfer of training; motivation to transfer; theory of planned behaviour; implementation intentions; adult education.