Marcus has been asked to take part in a longitudinal study of the relationship between fathers with obsessive-compulsive disorder (OCD) and obsessive-compulsive tendencies in their offspring.
Describe an appropriate sampling technique for this longitudinal study looking at the relationship between fathers and their offspring in relation to obsessive-compulsive disorder (OCD).
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.
