Dr. Vance conducted a naturalistic observation in a busy city metro station to investigate obedience to directional floor markings (social influence). He stood directly next to the main ticket barriers wearing a high-visibility jacket with 'RESEARCHER' printed on the back, clearly holding a clipboard and tallying whether passengers followed the directional arrows.
Explain one improvement that could be made to Dr. Vance's observation in terms of validity.
88 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.