The primary reason why within subjects designs are preferred over between subjects designs is that
a. fewer participants are required.
b. there are no treatment order effects.
c. error variability is reduced.
d. the participants are less likely to figure out the purpose of the experiment.
C
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Milo, age 3, needs reminders from his parents to follow safety rules when he plays outside. Milo's parents read an article about research on children and safety, and they know he needs these reminders because he __________.
A. may become more rebellious at this age and take more risks B. may forget the rules or fail to think about the rules before acting C. is not capable of following parental directions D. has parents who are constantly changing the rules, and it is difficult for him to keep track
If genetics plays no role in a behavior, then the heritability would be:
A. -1 B. 100 C. 1 D. 0.0
Which of the following is an example of a circadian rhythm?
A. sleep-waking cycles B. menstrual cycles C. seasonal migration D. mating seasons
Brad is in an electronics store with his parents. He looks at the CDs and thinks for a moment that he could grab one and put it beneath his coat. As he considers this possibility, he decides not to do it because he might get caught and his parents would punish him. What stage of moral development does Brad's decision represent?
a) preoperational b) preconventional c) autonomous moral principles d) conventional role conformity