Eight-year-old Miles has confidence in his own ability. When he faces a spelling test, he believes that he can practice spelling the words and he will do well on the test. Miles has to develop

Academic self-efficacy.

Explanation:

Self-efficacy: The term self-efficacy is defined as a person's belief about one's capabilities to perform specific behaviors which are considered necessary to create particular performance goals.

Academic self-efficacy: It refers to a person's conviction that he or she can achieve a designated level successfully based on academic tasks or can achieve particular academic goals.

In the question above, Miles has to develop academic self-efficacy.