Mischel (1972) studied delay of gratification in preschoolers: Children were offered a special reward if they could wait or a less attractive treat if they chose not to wait. A follow-up study was done years later, looking at the same children as adolescents. The researchers found an association between the waiting times of the preschoolers and parents' reports of the same children's behaviors as adolescents. Which of the following is a question one could ask to assess the construct validity of this association a. How well was delay of gratification measured?
b. Can the results be generalized to all American children?
c. Is there a third variable that explains this relationship?
d. Were the results statistically significant?