A research group is evaluating the impact of a new interactive mobile application designed to reduce occupational stress among high-pressure professionals. They plan to recruit participants by posting an advertisement on a LinkedIn group specifically for corporate mergers and acquisitions lawyers based in London, asking volunteers to download the app and complete a self-report stress index before and after a one-month trial.
Identify one reason why this sampling method might result in low population validity.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.