In Baron-Cohen et al.’s revised study of autism in adults, Group 1 (individuals with Asperger’s Syndrome or High-Functioning Autism) and Group 4 (IQ-matched controls) were matched on intellectual ability.
Explain how a failure to match these two groups on IQ would act as a confounding variable, and describe the consequence this would have for the validity of the study’s conclusions.
47 exam-style questions on OCR A Level Psychology Understanding disorders, covering Freud (1909): Little Hans and Baron-Cohen et al. (1997): Autism in adults. Each one has a worked solution and a mark scheme showing where the marks go.