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Learning objective

Explain what is meant by a double blind trial and the use of a placebo.

Read the explanation, check the common trap, then practise with flashcards and questions.

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Topic

Communicable diseases

Subtopic

Discovery and development of drugs

Aqa Gcse BiologyInfection and response

Study support

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Quick explanation

Explain what is meant by a double blind trial and the use of a placebo

  • This point belongs to Communicable diseases, especially Discovery and development of drugs.
  • You need to be able to explain what is meant by a double blind trial and the use of a placebo.
  • The key ideas to know are blind, meant, and double.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

blindmeantdoubletrialwhat

Why it matters

This objective helps connect Discovery and development of drugs to exam-style questions, flashcards, and revision notes for Communicable diseases.

Quick student answer

How do you explain what is meant by a double blind trial and the use of a placebo?

Direct answer

In Biology, this page helps you answer questions about what is meant by a double blind trial and the use of a placebo within Communicable diseases. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are double blind trial and placebo.

Key terms

  • double blind trial: A clinical trial design in which neither the participants nor the researchers know who is receiving the treatment or the placebo, to eliminate bias.
  • placebo: An inactive substance or treatment given to a control group in a clinical trial, used to compare against the effects of the actual drug.

Common trap

Misunderstanding Double Blind Trials: Clarify that in a double blind trial, both the participants and the researchers do not know who receives the treatment or the placebo, ensuring unbiased results.

Related questions

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