Tim, a 27-Year-Old Man, Has Unusually Narrow Shoulders, Low Muscle

question 27

Multiple Choice

Tim, a 27-year-old man, has unusually narrow shoulders, low muscle mass, and has no facial and body hair. His doctor recently prescribed testosterone replacement therapy to him. Tim is most likely suffering from:

• A) phenylketonuria (PKU).
• B) cystic fibrosis.
• C) Klinefelter syndrome.
• D) Huntington's disease (HD).

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Definitions:

Reinforcer

Something that increases the likelihood of a behavior being repeated, used in behavior modification and conditioning theories.

Extinction

In behavioral psychology, the gradual weakening and eventual disappearance of a learned response, often due to the lack of reinforcement.

Behavior

The actions or reactions of an individual or group in response to external or internal stimuli.

Money

A medium of exchange that allows for the valuation of goods and services, facilitating trade and economic activity.