Although he has been suffering from insomnia for several months, Brad prefers to avoid prescription drugs because he fears side effects. What hormone available in synthetic form might he consider taking to alleviate his sleep problem?
a) insulin
b) melatonin
c) epinephrine
d) vasopressin
B
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Democratic groups are more productive than authoritarian led groups, but they are more prone to aggression.
a. True b. False
James notices that his 2-week-old daughter can look at an object with one eye, while the other eye seems to be looking off to the side. What is it called when both eyes can focus on an object and is James' daughter's behavior normal?
a. Visual accommodation? normal in neonates b. Convergence? normal in neonates c. Convergence, abnormal in neonates d. Visual acuity? abnormal in neonates
When the conditions of a study only resemble or approximate the conditions of interest, questions may be raised about the ____ of the study
a. external validity b. internal validity c. standardization d. randomization
In some cultures, it is acceptable for college students to marry without love
Indicate whether the statement is true or false.