In the visual system, the main function of rods and cones is to
A. stretch and bend the light entering the eye.
B. convert light into electrochemical impulses.
C. adjust sensory thresholds.
D. direct the optic nerve to the brain.
Answer: B
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Which statement about treating attention deficit/hyperactivity disorders (ADHD) is accurate?
a. Stimulant medication usually reduces attention span but leads to improved social behavior b. Stimulant medication is prescribed in about 30 percent of cases. c. Modeling, parent training, and classroom contingency management programs have been far superior to drug therapy in effectiveness. d. Stimulant medication is prescribed to approximately 69% of children who have been diagnosed with ADHD.
According to Erikson, the adult years consist of three psychological stages, one of which
is a. competence versus inferiority. b. initiative versus guilt. c. intimacy versus isolation. d. identity versus role confusion. e. autonomy versus self-doubt.
Sentencing disparity refers to the
a. tendency for different judges to apply different sentences for the same offense. b. fact that judges believe that the purpose of sentencing the convicted is deterrence, but the general public believes the purpose is retribution. c. tendency for judges to give harsher sentences for harsher crimes despite differences in the recidivism rates of the crimes. d. difference between the sentence given by a judge and the amount of time a convicted offender actually serves.
When neither of two alleles is dominant, the resulting trait reflects the influence of both. This is called
A. codominance. B. recessive inheritance. C. polygenic inheritance. D. dominant inheritance.