Five-year-olds are less likely than _____-year-olds to report being sad

One of Rogers' therapeutic techniques

What will be an ideal response?

An ABA design involves

a. two administrations of the independent variable (A) with a baseline period (B) between them b. a reversal design c. examining the average responses of participants under three experimental conditions d. a multiple-I design e. intraparticipant replication