Dr. Crane is looking for a test that he can use to understand more about his clients' unconscious motivations. He would be very likely to use a(n) .

The answer is a projective test.

Explanation:

Projective tests are based on ambiguous stimuli that must be interpreted by the person, a process which is supposed to reveal unconscious ideas. The Rorschach test, which consists of inkblot drawings that must be described by the patient, is a common example of a projective test.

Although used extensively in business and marketing, projective tests have often been criticised as lacking scientific back-up.