What experimental design was utilized in Raine's study?

• A. Randomized controlled trial
• B. Matched pairs design
• C. Independent groups design
• D. Longitudinal design

Answer: (C)

The appropriate experimental design utilized in Raine's study is best described as an independent groups design. In this approach, participants are allocated to different groups, each receiving a different treatment or condition, and comparisons are made between these groups. Raine's study focused on comparing brain activity in individuals with a history of violent behavior against a control group without such a history. By using an independent groups design, the study ensured that there was no crossover between participants in different conditions, allowing for a clearer examination of the differences in brain function associated with violent behavior.

This design is particularly effective in psychological research, as it allows for the assessment of the impact of specific factors on behavior without the confounding effects of previous exposure to the treatment or condition. It facilitates a straightforward interpretation of the results, given the distinct separation of groups.