Four items assess the degree to which a person believes they are making progress toward a goal and are likely to achieve it. Developed in a weight loss context but applicable to other goal pursuit situations.
Dellande, S., Gilly, M. C., & Graham, J. L. (2004). Gaining compliance and losing weight: The role of the service provider in health care services. Journal of Marketing, 68(3), 78–91.
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