Examlex
One group of ocean voyagers is given a new but untested pill for seasickness and a second group is given an inactive pill.Neither the voyagers nor the experimental researchers know which group has received the new pill.In this experiment,the investigators are making use of
Placebo Study
Research that investigates the effect of a treatment by comparing the response of subjects receiving an inactive substance or sham treatment to those receiving the actual treatment.
Sugar Pill
A placebo used in clinical trials to test the efficacy of medications, which has no therapeutic effect but can influence participants' perceptions of their symptoms.
Antidepressant Medication
A class of drugs designed to improve symptoms of depression by altering chemical imbalances of neurotransmitters in the brain.
Correlational Method
A research strategy that examines whether and how variables are related, without implying a cause-and-effect relationship.
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