Question

An experimental procedure in which both the research participants and the research staff are ignorant about whether the research participants have received the treatment or a placebo.

a) Single-blind study
b) Double-blind procedure
c) Control group
d) Random assignment

Answer 1

A double-blind procedure is an experimental procedure in which both the research participants and the research staff are ignorant about whether the research participants have received the treatment or a placebo. This helps prevent bias in the experiment.

Step-by-step explanation:

A double-blind procedure is an experimental procedure in which both the research participants and the research staff are ignorant about whether the research participants have received the treatment or a placebo. This helps prevent bias in the experiment.

An example of a double-blind experiment is Salk's vaccine trial. Double-blind experiments are now considered the gold standard of clinical trials of vaccines, therapeutic drugs, and other medical treatments.