It Has Been Difficult to Do Double-Blind,placebo-Controlled Studies on the Effects

question 37

Multiple Choice

It has been difficult to do double-blind,placebo-controlled studies on the effects of steroids because

• A)the federal government will not allow research with controlled substances.
• B)they produce detectable psychological effects.
• C)the potency of the drugs is so variable from one sample to another.
• D)the researchers could face a massive lawsuit.

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Definitions:

Myopia

A common vision condition, also known as nearsightedness, where close objects appear clearly, but distant ones do not.

Presbyopia

A common age-related condition where the eye's lens loses the ability to focus on close objects, resulting in difficulty reading or seeing details at close range.

Weber Test

A screening test for hearing that uses a tuning fork to determine the nature and severity of hearing loss.

Rinne Test

A hearing test using a tuning fork to compare air conduction and bone conduction of sound in the ear, used to diagnose types of hearing loss.