A Level Psychology OCR Practice Exam

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What was the sample size of the infants in the Gibson and Walk study?

24 infants
36 infants
48 infants
18 infants

The correct answer is: 36 infants

In the Gibson and Walk study, the sample size of the infants was 36. This number is significant as it provided a sufficient sample to examine depth perception using the "visual cliff" apparatus. The study aimed to investigate whether infants could perceive depth and if they would hesitate to crawl over the apparent drop-off created by the cliff. A sample size of 36 infants enabled the researchers to draw more robust conclusions regarding developmental milestones in depth perception and provided varied responses that could be analyzed for trends in exploration and fear of heights. When examining the results, a larger sample size like this helps in ensuring that the findings can be generalized to a broader population of infants.