Pretend That You Are a Peer Reviewer for a Study

question 37

Multiple Choice

Pretend that you are a peer reviewer for a study on exposure therapy and arachnophobia (fear of spiders) .The researcher chooses a group of patients who he thinks can handle the treatment (administered by a colleague) and has another group of patients as a control that he talks to about their fears weekly.He reports that,following exposure therapy,those in the experimental group showed less fear of spiders than those in the control group.As a reviewer,what is the hidden flaw with this study that limits its claims?

• A)The researcher has not controlled for the placebo effect.
• B)There is no random assignment so it is not an experiment.
• C)The study has no dependent variable.
• D)The researcher has not controlled for the experimenter expectancy effect.

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