Gillian's club is planning a 5-mile race as a fundraiser. because gillian had never run in a race before, she was certain that she would not be able to complete the 5 miles and instead volunteered to screen and register the runners. how might the social cognitive theory be used to explain gillian's behavior?

I believe the answer is: Gillian has a strong sense of self-efficacy when it comes to talking to people and writing down information, but she has a weak sense of self-efficacy when it comes to running in a race.

Self-efficacy in this context refers to an individuals' belief in whether they have what it take to be able to solve a certain problem.
Low in self-efficacy tend to make people become discouraged to commit in doing a certain outcome because they believe they would just waste everyone's time because they think they do not have what it takes to be successful in it.