A Group of Experimenters Want to Test the Effectiveness of a Well-Known

question 181

Multiple Choice

A group of experimenters want to test the effectiveness of a well-known and expensive brand of pain pills against the effectiveness of a lesser-known and cheaper brand.To prevent any expectations about brand effectiveness from influencing their experimental test,the researchers are likely to make use of

• A)random sampling.
• B)replication.
• C)operational definitions.
• D)the double-blind procedure.

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Definitions:

Dysphagia

Difficulty or discomfort in swallowing, often indicative of a disorder in the throat or esophagus.

Swallowing Medications

The act of ingesting drugs by mouth to achieve a therapeutic effect.

Difficulty Swallowing

The sensation that it is hard to swallow food or liquids, medically known as dysphagia.

Abdominal Ascites

The accumulation of fluid in the peritoneal cavity, causing abdominal swelling, often related to liver disease or cancer.