Dr. Lovejoy wanted to do research on real-world conditions that lead to aggression in 10-year-old children, defining aggression as “intent to harm another person.” She went to a local elementary...

Dr. Lovejoy wanted to do research on real-world conditions that lead to aggression in 10-year-old children, defining aggression as “intent to harm another person.” She went to a local elementary school and videotaped a 10-minute recess period. She and her trained coders then coded the behavior of every child and counted the number of times each child acted aggressively. This is an example of what kind of research design?

a. descriptive

b. correlational

c. case study

 d. experimental