This Child Abuse Potential (CAP)Inventory boasts an accuracy rate of approximately 90%.Properly interpreted,this means that
A) 90% of the people who score high on the CAP physically abuse children.
B) 90% of the people who score low on the CAP do not physically abuse children.
C) in groups with a 50% base rate, 90% of those who abuse children are correctly identified.
D) in groups with a 90% base rate, 50% of those who abuse children are correctly identified.

Question

Quizplus · Accepted Answer

The accuracy rate of 90% means that in groups with a 50% base rate (i.e., the prevalence of child abuse), 90% of those who abuse children are correctly identified. Therefore, choice C is the correct answer. A and B are incorrect because the accuracy rate does not indicate the percentage of people who score high or low on the CAP that do or do not physically abuse children. D is incorrect because it refers to a group with a base rate higher than 50%.

This Child Abuse Potential (CAP)Inventory Boasts an Accuracy Rate of Approximately