Dr. Evelyn conducted an investigation into the effectiveness of a new biofeedback-assisted breathing application designed to reduce occupational anxiety in office-bound professionals.
She recruited participants by approaching employees who happened to be present in the communal cafeteria of a single technology startup headquarters during their lunch break on a Friday afternoon.
She compared two groups of participants:
Evelyn then asked all participants to complete a daily occupational stress diary and rate their overall anxiety over a 48-hour period. A score of 20 represented 'extreme tension and panic' and a score of 0 represented 'absolute calm'.
Explain one strength and one limitation of the sampling technique used by Evelyn in this study.
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, 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.
