3. L-dopa is often given to people suffering from Parkinson's disease. However, some patients will begin to experience hallucinations. What is the best explanation for this psychotic symptom of side effects? (A)The disease causes the patient so much stress that a break from reality is inevitable. (B)The patient is getting too much dopamine stimulation from the L-dopa. (C) The patient needs larger quantities of the dopamine in L-dopa to keep the hallucinations away. (D) L-dopa depletes an important vitamin necessary for preventing hallucinations.

5. A researcher repeatedly presents an image of a blue rectangle to a 4-month-old infant. After several presentations, the infant stops looking at the image. The researcher then presents the infant with the image of a red rectangle. The infant shows a renewed interest in this image and looks at it for as long as he had the blue rectangle initially. Which statement is not correct? (A)a 4-month-old infant can tell the difference between blue and red. (B)The researcher uses the repeat presentation paradigm to examine the perceptual ability in a 4-month-old infant. (C) The researcher uses the habituation paradigm to examine the perceptual ability in a 4-month-old infant. (D) This research cannot examine the shape discrimination in a 4-month-old infant.

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