Dr. Harrison investigated whether a defendant's regional accent influences jury decision-making. He recruited his sample of participants using an opportunity sampling technique, approaching members of the public in a city centre shopping mall on a Tuesday afternoon.
Dr. Harrison presented his participants with an audio recording of a defendant's testimony in a burglary trial. In Condition A, the defendant spoke with a standard Received Pronunciation (RP) accent, and in Condition B, the defendant spoke with a strong regional accent. Participants were then asked to rate the likelihood of the defendant's guilt on a scale from 1 (definitely innocent) to 7 (definitely guilty).
Explain one weakness of Dr. Harrison using an opportunity sampling technique for his investigation.
Practise Edexcel A Level Psychology Content with exam-style questions for A Level Psychology. 100 questions covering Main features of classical conditioning, Pavlov (1927) salivation in dogs, Main features of operant conditioning, Properties of reinforcement, Behaviour modification and shaping, Main features of social learning theory, Social learning stages, Bandura (1961, 1963) Bobo doll experiments, Bandura (1965) vicarious reinforcement, Learning theories and phobias, Treatments for phobias, Individual differences, and Developmental psychology, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.