A clinical psychologist develops a new, shortened self-report scale to measure depressive symptoms, called the "Quick Mood Index" (QMI). Which of the following procedures should the psychologist use to establish the concurrent validity of the QMI?
Give the QMI to a panel of independent clinical psychologists to evaluate whether the items, on the face of it, appear to measure depressive symptoms accurately.
Administer the QMI to a group of participants, wait three weeks, and then administer the QMI again to the same participants to calculate the correlation between the two sets of scores.
Administer both the QMI and a well-established, validated scale for depression (such as the Beck Depression Inventory) to the same group of participants and calculate the correlation between the two sets of scores.
Administer the QMI to a clinical sample in a highly controlled laboratory setting and then to a group of patients in a naturalistic community clinic to see if the findings are consistent across different settings.
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.