VALID Science 10 Practice Questions - NSW VALID Science 10 Assessment Exam

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Why do medical researchers include a placebo group (receiving an inactive substance) when testing the efficacy of a new antiviral drug on human patients?

To ensure all patients in the clinical trial receive at least some form of active medical treatment To increase the sample size so that statistical calculations require fewer test subjects overall To test whether the placebo substance itself possesses therapeutic medicinal qualities To provide a control baseline to determine if healing is due to the drug rather than psychological factors or natural recovery

Correct Answer:

To provide a control baseline to determine if healing is due to the drug rather than psychological factors or natural recovery

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