Amira wanted to investigate the impact of leading questions on the accuracy of eyewitness testimony. She recruited 12 students from her own A-level Psychology class to watch a brief video clip of a minor traffic collision. Afterwards, she asked them to estimate the speed of the vehicles, using either the verb 'hit' or 'smashed' in the critical question.
Explain one improvement that could be made to Amira's study.
120 exam-style questions on Edexcel A Level Psychology Content, covering Biological explanations of crime, Social explanations of crime, Cognitive and ethical interview techniques, Psychological formulation of offending, Cognitive-behavioural treatment for offenders, Biological treatment for offenders, Factors influencing eye-witness testimony, Factors influencing jury decision-making, Individual differences, and Developmental psychology. Each one has a worked solution and a mark scheme showing where the marks go.