How many kinds of olfactory receptors do we have?
a. two or three
b. seven
c. twenty
d. hundreds
d
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A recent study (Trenholm et al., 2007) found that sex education programs that teach only abstinence
a. dramatically reduce teen pregnancy rates. b. have no effect on teen pregnancy rates. c. increase contraceptive use among teens. d. reduce teen pregnancy rates among younger adolescents, but have no effect on the pregnancy rates of olderadolescents.
Suppose an archaeologist unearthed an ancient Greek document that contained instructions for the treatment of mental disorders such as melancholia and mania. What would the writing probably say? a. "Hypnotize the person and encourage the person to express his or her negative emotions.". b. "Have the family treat the person with rest, good diet, and moderate exercise."
c. "Treat the person as you would a witch.". d. "Take a sharp stone and cut a hole in the person's skull to let out the evil demons.".
The smallest difference in intensity of two stimuli required to perceive a difference in intensity 50% of the time is called the _______ _______
Fill in the blank(s) with correct word
Often, researchers use __________________ as the subjects of their experiments because many basic processes in animals are sufficiently similar to humans and therefore these animals are acceptable substitutes for research that would be considered unethical in human participants.
a. monkeys and rodents b. birds and rodents c. monkeys and birds d. birds and cats