asked 30.1k views
3 votes
Dr. Gillis has decided to use _____________ in his research to guard against both experimenter bias and participant expectations.

a. confounding variables.
b. random selection.
c. the placebo effect.
d. the double blined design.
e. factor analysis

asked
User Axeman
by
7.0k points

1 Answer

6 votes

Answer:

D

Step-by-step explanation:

answered
User Jiantongc
by
8.9k points
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