Elena is investigating the effectiveness of a new mobile app designed to help young adults quit vaping. She recruited her participants from her local university campus using a volunteer sampling technique.
Elena gave two different groups of participants a different version of the app. In Condition A, she gave the participants a version including progress trackers with social comparison leaderboards. In Condition B, the app was changed to provide standard health fact alerts only.
Explain one weakness of Elena using a volunteer sampling technique for her investigation.
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.
