10 free NCE practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
NCE Practice Test 3Tutor mode
Question 1 of 10
Professional Practice and Ethics
A small study finds no significant difference between a group intervention and a wait-list control (p = .20). A later large trial shows that the intervention clearly works. Which error did the first study most likely make, and what would have reduced it?