A study in which neither the subjects participating in the research nor the scientists performing the research know which subjects are receiving the treatment and which are getting the placebo is known as a(n)_____ study.
A)double-blind
B)half-blind
C)confidential
D)crossover
E)observational

Question

A study in which neither the subjects participating in the research nor the scientists performing the research know which subjects are receiving the treatment and which are getting the placebo is known as a(n)_____ study.​
A)​double-blind
B)half-blind
C)confidential
D)crossover
E)​observational

Quizplus · Accepted Answer

A double-blind study is a type of study in which both the subjects and the researchers do not know whether the subjects are receiving the treatment or the placebo. This helps to reduce bias and increase the validity of the results.

A Study in Which Neither the Subjects Participating in the Research