Research paper
Prochaska JO, DiClemente CC. Stages of change in the modification of problem behaviors. Progress in Behavior Modification. 1992;28:183-218.
Why we cite it
Key chapter extending the Transtheoretical Model (TTM) beyond its original smoking cessation context to other problem behaviors. The TTM, first developed from studies of 1,500 smokers in the early 1980s, identifies five stages of change and argues that different interventions are effective at different stages. This chapter represents the model's maturation as a general framework for behavior modification. Note: the TTM has attracted significant criticism, particularly regarding its application to dietary behaviors — see notes.txt.