The placebo effect is also called the expectancy effect.
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Q440: If a perfect positive correlation of +1.00
Q441: Any change that can be directly attributed
Q442: Expectancy effects are the same things as
Q443: In a double-blind study, neither the researcher
Q444: Random assignment means that all participants in
Q446: Extraneous variables are also called confounding variables.
Q447: The control group (or control condition) is
Q448: A placebo is a fake and inert
Q449: A single-blind technique is one in which
Q450: In a double-blind experiment, participants are both
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