When a Double-Blind Study Is Not Possible, an Acceptable Alternative

question 18

Multiple Choice

When a double-blind study is not possible, an acceptable alternative may be .

• A)a matched groups design
• B)a within-groups design
• C)the use of a control group
• D)a masked design

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Definitions:

Organic Product

A compound or substance that has been synthesized from organic (carbon-containing) materials.

Regio-

A prefix in chemistry indicating the region or position in a molecule where a certain reaction takes place or where a particular substituent is located.

Stereochemical

Pertains to the study of the three-dimensional arrangement of atoms within molecules and the impact of this arrangement on the physical and chemical properties of the molecules.

Regio-

A prefix indicating the region or position in a molecule where a reaction or specific structural change occurs.