Which of the following statements is true of rod cells in the retina of the eye?
A) They transmit sensory information from the brain to the eye.
B) They transmit the sensation of color.
C) They are most dense toward the periphery of the retina.
D) They are sensitive only to the intensity of light.
D
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A study has found a positive correlation between smoking cigarettes and schizophrenia. What is a possible explanation for this finding?
a. Emotional problems experienced during childhood cause schizophrenia. b. Some property of nicotine could be part of the cause of schizophrenia. c. The gene that carries schizophrenia also increases the potential for smoking. d. A fourth variable could be causing both.
Positive symptoms of schizophrenia include all of the following EXCEP
A. hallucinations B. bizarre behavior C. psychomotor retardation D. delusions