Provide an appropriate response.
-A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly
Assigns half of a group of overweight persons to a treatment group who are given the herb with instructions as
To use and a planned diet for six weeks. The other half of the group is given a placebo with the same instructions
And same diet. None of the participants know to which group they belong. She weighs each subject on Friday of
Each week. What type of blinding is being used?
A)single-blind
B)double-blind
C)triple-blind
D)does not use blinding

Question

Quizplus · Accepted Answer

The study is single-blind because the participants do not know whether they are receiving the actual herb or a placebo, but the nutritionist conducting the study is aware of who is in each group.

Provide an Appropriate Response