Dr. Vance conducted an empirical study investigating the weapon focus effect in eyewitness testimony. He explored the relationship between the type of weapon visible in a mock crime video clip (classified as 'knife' or 'handgun') and the witness's overall accuracy in describing the perpetrator's clothing (classified as 'accurate' or 'inaccurate').
State three reasons why Dr. Vance would use a Chi-Square test of association to analyze his data.
51 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.