Author Question: If the experimenter knows which treatments the participants have been administered, but the ... (Read 88 times)

Evvie72 · **on:** Jun 20, 2018

If the experimenter knows which treatments the participants have been administered, but the participants do not, the study is called:

a. blind.
b. double blind.
c. placebo.
d. invalid.

Question 2

The placebo effect is:

a. purely psychological in origin.
b. purely physiological in origin.
c. both psychological and physiological in origin.
d. not real.