Consistency

Compliance

Distinctiveness

Consensus

PTSD is effectively treated via a technique called psychological debriefing

PTSD affects about 5% of Australians at any one time

PTSD affects about 10% of people who are exposed to traumatic events

PTSD often involves re-experiencing or reliving a traumatic memory

Testing the patients before they receive any treatment at all

Allowing patients to select whether they would prefer

to receive the therapy being evaluated, or if they would prefer to remain in

the control condition

None of the above would help test the effectiveness of a newly-developed psychological therapy

Ensuring the researchers remain unaware of the treatment a

particular patient is receiving