Self-control and food. Self-efficacy is a general concept that measures how well we think we can control different situations.

In the study described in the previous exercise, the participants were asked, “How sure are you that you can eat foods low in fat over the next month?” The response was measured on a five-point scale with 1 corresponding to “not sure at all”

and 5 corresponding to “very sure.” Here is a summary of the self-efficacy scores obtained about 2 months after the program:

Group n x s Intervention 165 4.10 1.19 Control 212 3.67 1.12 Analyze the data using the questions in the previous exercise as a guide.