While the exact cause of narcolepsy is not known, experts suspect that it is due to a loss of cells in part of the brain that are responsible for releasing a neurotransmitter called
A. acetylcholine.
B. serotonin.
C. orexin.
D. glutamate.
Answer: C
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The median is typically more stable from sample to sample than the mean
Indicate whether the statement is true or false
Cohabitation refers to
a. living together in a sexually intimate relationship outside of marriage. b. heterosexuals living together without marriage. c. multiple roommates. d. living together in a sexual relationship without being married or having children.
Why is a confounding variable unacceptable in a true experiment? a. It can distort the effect of the independent variable
b. It can disrupt the normal behavior of participants. c. It threatens internal validity by providing an alternative explanation for the results. d. It creates a directionality problem that undermines a cause-and-effect conclusion.
The theory proposed by ________ that an individual's personality originates in early forms of childhood sexuality and that gratification of this sexuality changes throughout various stages of development is called the ________ theory of development
a. Erikson; psychosocial c. Freud; psychosocial b. Erikson; psychosexual d. Freud; psychosexual