An 8-Month-Old Boy Infant with a 3-Month History of Recurrent

question 9

Multiple Choice

An 8-month-old boy infant with a 3-month history of recurrent upper and lower respiratory tract infections is admitted to the hospital.The physicians consider the possibility of a hereditary immune disorder and run several tests,eventually determining that the patient has undetectable levels of serum IgA.The infant is treated with strong antibiotics and recovers.Which of the following is NOT a medical problem likely to occur in this patient as he gets older?

• A)Anaphylactic reactions to blood transfusions
• B)Chronic gastrointestinal infections
• C)Lactose and wheat gluten intolerance
• D)Inflammatory skin disease
• E)Recurrent nasal sinus congestion

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Definitions:

Extra Credit

Additional points awarded to students beyond the regular assignments and exams, often to enhance their final grade.

Make-up Exam

A test offered at a later time for students who were unable to attend the original exam due to valid reasons.

Schedule of Reinforcement

The specific pattern and timing of presenting rewards in operant conditioning to shape behavior.

Reinforcers

Reinforcers are stimuli that increase the likelihood of a behavior being repeated, and can be positive (adding something desirable) or negative (removing something undesirable).