PAU Ciencias Generales (Canarias) Practice Questions - Canary Islands PAU General Sciences Exam - Ciencias Generales 2o Bachillerato ULPGC ULL 2026 Exam

Why is a double-blind trial design considered the gold standard in clinical biomedical testing?

It ensures that both treatment and control groups receive double the dosage of the test drug. It allows researchers to modify experimental protocols midway through the study. It eliminates both participant expectation bias and observer bias during evaluation. It guarantees that no participants experience placebo side effects.

Correct Answer:

It eliminates both participant expectation bias and observer bias during evaluation.

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