For the single-sample t-test, df is calculated using _____

Burns and Dunlop reported that ten years after the divorce of adolescents' parents, many adolescents were still angry toward their:

A) mother. B) father. C) stepmother. D) stepfather.

Children who acquire effective self-regulatory skills develop a sense of

A) elevated self-esteem. B) advanced linguistic intelligence. C) academic self-efficacy. D) practical intelligence.