Dr. Al-Jamil is planning to carry out a cross-sectional study comparing the cognitive functioning of patients diagnosed with schizophrenia who have been residing at a secure psychiatric facility for different lengths of time.
Describe how Dr. Al-Jamil could obtain a sample for this cross-sectional study.
82 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.