A psychologist investigates whether adults are influenced by another person's choice of snack. In both pilot groups, another adult in the room chooses fruit before the participant chooses a snack.
| Information given before the study | Participants who chose fruit |
|---|---|
| The real aim of the study | 16 out of 20 |
| The study was about snack preferences | 9 out of 20 |
An ethics committee instructs the psychologist to tell all participants the real aim before the main study begins.
Using the information in the table, explain one weakness of following the ethics committee's instruction in this study.
182 exam-style questions on OCR GCSE Psychology 7.1 Planning Research, covering 7.1.1 Hypotheses, 7.1.2 Variables, 7.1.3 Experimental Designs, 7.1.4 Populations and Sampling, 7.1.5 Ethical issues, and 7.1.6 Dealing with ethical issues and BPS Code. Each one has a worked solution and a mark scheme showing where the marks go.