By 8 weeks of age, infants show signs of day/night sleep rhythms. What are these rhythms called?

Which of the following statements best summarizes the stability of personality over time?

A) For most people, personality changes greatly over time, especially during mid-life. B) Personality is stable across all people in all cultures. C) For most people, personality traits tend to be stable over time, but within some individuals there may be relatively large changes. D) Personality characteristics are subject to a great deal of change depending on environmental stressors.

Which of the issues below are serious problems for the use of antipsychotic drugs for schizophrenia?

a. These drugs reverse the negative but not the positive symptoms. b. These drugs may reverse the positive but not the negative symptoms. c. These drugs block D4 receptors in the striatum, which results in motor side effects. d. Long-term administration of these can induce depression as a side effect. e. The drugs exaggerate both positive and negative symptoms.