A Blind Study Is When

question 24

Multiple Choice

A blind study is when

• A) researchers do not tell the subject what is being studied.
• B) the subject does not know whether he is getting the trial drug or a placebo.
• C) researchers give random test agents to the subject.
• D) the subject is given the trial drug at random times.

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Definitions:

Truth-functional Compound

A compound statement whose truth value depends solely on the truth values of its components.

Quantifier

A logical tool that counts the instances within a discourse domain adhering to the conditions of an open formula.

Atomic Open Sentence

A type of statement in logic, which contains at least one variable, and becomes a proposition once the variables are replaced by specific values.

Compound

A substance formed from two or more elements chemically united in fixed proportions, or in logic, a sentence that combines two or more atomic sentences with logical connectives.