Breast-feeding triggers the release of the hormone oxytocin. What effect does oxytocin have on mothers during the days following the birth of their neonates?
a. decreases blood pressure
b. starts the process of ovulation
c. reduces bleeding in the uterus
d. delays abdominal cramping
Answer: C
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Which of these disorders is the least common?
a. Anxiety disorders b. Substance abuse c. Schizophrenia d. Major depression
Exorcism involves ____
a. increasing one's activity level to help recover from a mental illness b. chipping a hole in the skull of a person believed to be possessed by demons c. conducting a religious ceremony over a person to cast out evil spirits d. examining the brains of people who have severe mental disorders
Which of the following is a feature of the germinal stage of prenatal development?
A) The major organ systems begin to form. B) The zygote divides repeatedly while moving to the uterus. C) The stage lasts from implantation to the eighth week of development. D) The mother begins to feel the fetal movements.
A researcher wants to conduct an animal learning experiment using 40 participants in a between subjects design. The researcher decides to randomly assign the participants to the four different conditions so that
a. participants from the same litter will not be tested together. b. the data will be easier to analyze than if participants were assigned on any other basis. c. the results will be more generalizable. d. the groups will be equivalent prior to the manipulation of the independent variable.