MRCPsych Testing & Evaluation 2

Question 1

A researcher reports a Cohen's d of 0.8 for a new antidepressant versus placebo. How is this effect size classified?

Accepted Answer

Large

Answer

Cohen's d of 0.8 is classified as a large effect size (small=0.2, medium=0.5, large=0.8).

Question 2

Which property of a psychometric test refers to the consistency of scores across different raters?

Accepted Answer

Inter-rater reliability

Answer

Inter-rater reliability measures the degree of agreement between two or more independent raters applying the same instrument.

Question 3

The Beck Depression Inventory-II (BDI-II) is best described as which type of measure?

Accepted Answer

Self-report symptom severity scale

Answer

The BDI-II is a 21-item self-report questionnaire measuring depression severity, not a clinician-administered or projective tool.

Question 4

A test's sensitivity is 90% and specificity is 70%. A patient tests positive. Which concept best quantifies the probability the patient truly has the disorder?

Accepted Answer

Positive predictive value

Answer

Positive predictive value (PPV) is the proportion of positive test results that are true positives, incorporating sensitivity, specificity, and prevalence.

Question 5

Which neuropsychological test is specifically designed to assess frontal lobe executive function through a card-sorting paradigm?

Accepted Answer

Wisconsin Card Sorting Test

Answer

The Wisconsin Card Sorting Test (WCST) requires flexible rule-shifting and is a classic measure of prefrontal executive function.

(MRCPsych) Member of the Royal College of Psychiatrists Practice Test

(MRCPsych) Member of the Royal College of Psychiatrists Practice Test

MRCPsych Testing & Evaluation 2