1. What makes people change their behavior?
Behavior change theories / models:
1. The Stages of Change Model
2. The Diffusion of Ideas Model

2. Stages of Change Model
Behavior change is not a single event, but rather
a process through which a person moves:
Pre-contemplation
Contemplation
Preparation
Action
Maintenance

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4. Diffusion of Ideas Model
People are more likely to adopt a new behavior
when someone they respect or admire endorses
the behavior:
Opinion leaders influence an initial group
New social norm is established
Rest of community follows

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