What is a key idea of the Transtheoretical Model of Behaviour Change?

The Transtheoretical Model of Behaviour Change, also known as the Stages of Change model, emphasizes that individuals do not necessarily progress through the stages of change in a linear fashion. Instead, they may move back and forth along the continuum of stages—pre-contemplation, contemplation, preparation, action, and maintenance. This dynamic movement reflects the reality that behavior change is often a complex, non-linear process. People may relapse to earlier stages after attempting to change their behavior, and this back-and-forth movement is a normal part of the change process.

This model acknowledges that each individual’s journey is unique and can involve multiple attempts to achieve lasting change. The understanding that individuals can cycle through the stages helps practitioners design more effective interventions and support strategies tailored to the individual's current position in the process.