What basic research technique can be used to avoid biased samples?

A _____ contains relatively difficult items, but has no set time limit for completion.

A) power test B) speed test C) performance test D) psychomotor test

A therapist says to her client, "What is said in this room is kept in strict confidence unless there are legal or therapeutic reasons to reveal it. Under most circumstances, though, you have control over what gets disclosed. Unless you give me permission, I will not disclose any confidential information." The therapist is describing the ____

a. therapist's right of confidentiality b. client's right to treatment c. therapist's duty to warn d. client's privileged communication