A fixed interval schedule of reinforcement is one in which a response is reinforced only after

In terms of school achievement, drug use, and early pregnancy, stepchildren are most similar to children who:

A) are from single-parent homes. B) are from intact homes. C) are adopted. D) have gay or lesbian parents.

A researcher has recorded that on the playground, boys are more likely to use physical aggression to get what they want, but that girls are more likely to use verbal aggression to get what they want

This researcher most likely employed a(n) ________ research method. a. observational b. archival c. experimental d. interview