What is a blind or blinded experiment?

Q: What is a blind or blinded experiment?


A: A blind or blinded experiment is a test or experiment in where the experimenter does not know which treatment is given to a subject.

Q: Why is a blind or blinded experiment used?


A: A blind or blinded experiment is used to avoid bias which the experimenter might otherwise introduce.

Q: What is a double-blind trial?


A: A double-blind trial is a trial where both tester and subject are blinded.

Q: In what kind of experiment should the identities of the product be hidden?


A: In an experiment where consumers are asked to compare the tastes of different brands of a product, the identities of the product should be hidden.

Q: Why should the identities of the product be hidden in a taste comparison experiment?


A: The identities of the product should be hidden in a taste comparison experiment to avoid consumers preferring the brand they are familiar with.

Q: In what kind of experiment should both patients and experimenter not know the dosage being given in each case?


A: In a pharmaceutical drug testing experiment, both patients and experimenter should not know the dosage being given in each case.

Q: What is the opposite of a blind trial?


A: The opposite of a blind trial is an open trial.

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