A sociologist wanted to investigate whether task concentration is affected by the type of working environment (noise level).
The researcher needed a stratified sample of 30 employees. They obtained this sample from a logistics firm consisting of 120 full-time and 80 part-time staff.
Participants were asked to complete a series of complex data entry tasks on a computer system.
There were two conditions in the study, Condition 1 and Condition 2.
Each participant was tested individually. The sociologist recorded the performance by counting the total number of data-entry errors made by each participant over a 20-minute period.
Explain one advantage of using a stratified sample of participants in this study.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 100 questions, matched to the AQA A Level Psychology (7182) 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.