A Level Psychology OCR Practice Exam

What type of sample was used in Ainsworth and Bell’s research?

1. Random sample

2. Opportunity sample

3. Stratified sample

4. Self-selected sample

The correct answer is: Opportunity sample

Ainsworth and Bell’s research utilized an opportunity sample, which involves selecting participants who are readily available and accessible at the time of the study. This approach often relies on the convenience of recruiting participants who fit the criteria set by the researchers. In the context of Ainsworth and Bell’s work, the study was conducted with mothers and their infants in a natural setting, reflecting the characteristics of an opportunity sampling method, as it included those who were present at the time and willing to participate in the research. Understanding the sampling method is crucial because it can influence the generalizability of the findings. Opportunity samples, while practical and cost-effective, might not represent the broader population, which is something researchers need to be aware of when interpreting the results.