The purpose of a randomized control trial is to
a. determine how likely it is that the results of a treatment were due to chance
b. ensure that sample results generalize to the population
c. ensure that participant characteristics are equivalent across the experimental and control groups
d. determine whether two variables are related
Ans: C
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Terrell will do almost anything for extra credit. He sees a sign recruiting participants for research on eating. When he inquires, he is told the study involves semi-starvation. He is a bit leery now, so he heads over to the library to read up on the
topic. What he finds persuades him to look for other ways to earn extra credit. What did he find? a. Semi-starvation experiments are associated with a high mortality rate. b. The experience will lead to symptoms similar to posttraumatic stress disorder. c. Semi-starvation permanently alters the biological mechanisms that control eating. d. Participants are likely to develop obsessions and compulsions concerning food that continue after they return to their normal weight.
Gender-role socialization
a. is less flexible for black families than white families. b. varies depending on culture. c. are more flexible for Asian and Hispanic families than white families. d. are the same from one generation to another.
Answer the following statements true (T) or false (F)
1 Humans have 23 pairs of chromosomes 2 Both the mother and the father contribute equally in determining the sex of their offspring 3 Fraternal twins, parents and their children, and siblings share the same degree of relatedness 4 Monozygotic twins share 100% of their genes 5 Dizygotic twins result when a single fertilized egg splits into two
For identical twins, correlation of their IQ test scores
a. remain stable and weak throughout childhood. b. remain stable and strong throughout childhood. c. are strong while young, but weaken gradually later. d. are weak while young, but strengthen gradually later.