A Level Psychology OCR Practice Exam

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What sampling method was used for the NGRI group in Raine et al.'s study?

Random sampling
Opportunity sampling
Stratified sampling
Systematic sampling

The correct answer is: Opportunity sampling

In Raine et al.'s study, the NGRI (Not Guilty by Reason of Insanity) group was formed using opportunity sampling. This method involves selecting participants who are readily available and meet specific criteria. In the context of this study, the researchers recruited participants from individuals already diagnosed with a mental disorder and who were awaiting trial. This approach allowed the researchers to access a specific population that was relevant to their investigation into the biological aspects of violent behavior. Opportunity sampling is particularly beneficial in clinical settings, where it may be challenging to gather a random sample due to the nature of the population being studied. This method offers practical advantages in terms of accessibility and efficiency, as it uses those who are already in a context aligning with the study's focus. Therefore, it is the most suitable choice for the NGRI group in Raine et al.'s research.