Full file at
Chapter 10
The Biological Approach: Relevant Research
1.One reason for the resistance by psychologists to acknowledge the important role of biology in human personality is that the
A.biological determinants of personality matter little.
B.blank slate view has such great appeal.
C.field of psychology is determined to remain separate from biology.
D.results of biologically-based research can always be explained without reference to genetic factors.
ANS: B REF: 252
2.How do most personality researchers phrase the “naturenurture” question today?
A.Which determines personality—genetics or the environment?
B.Which is more important in determining personality—genetics or the environment?
C.To what extent are our personalities influenced by genetics?
D.To what extent and how do both genetics and the environment influence personality?
ANS: D REF: 253
3.Researchers use the twin-study method to
A.separate environmental from genetic influences.
B.determine how much of our personality is inherited from our parents.
C.determine how much of our personality is the result of experience.
D.all of the above
ANS: D REF: 254
4.A personality psychologist designs an experiment in which she plans to use the twin-study method. The psychologist is probably conducting research to examine the
A.stability of temperament over time.
B.influence of genetics on personality.
C.influence of siblings on personality.
D.effects of birth order on personality.
ANS: B REF: 254 WWW
5.Those twins we commonly call “identical twins” are more technically called
A.monozygotic.
B.dizygotic.
C.difertilized eggs.
D.fraternal twins.
ANS: A REF: 255
6.Suppose you design a personality study in which you plan to use the twin-study method. You are probably conducting research to examine the
A.influence of siblings on personality.
B.stability of temperament over time.
C.influence of genetics on personality.
D.effects of birth order on personality.
ANS: C REF: 254
7.Researchers have difficulty determining genetic influences on personality when they simply compare children with their parents. This is because
A.it is difficult to find comparable measures for children and adults.
B.genetic and environmental influences on personality are confounded when using this method.
C.it is difficult to find control groups that match the experimental groups.
D.we need to follow the development of the children’s personalities for many years to determine genetic influences.
ANS: B REF: 254
8.Siblings’ personalities may be similar because
A.children inherited personality traits from their parents.
B.siblings share the same living environments during childhood.
C.siblings are raised in the same way by parents.
D.all of the above
ANS: D REF: 254
9.The twinstudy method is used by researchers to get around which methodological problem?
A.Biased samples
B.A confound between genetic and environmental influences
C.Questions about generalizability
D.Validity of measures
ANS: B REF: 254
10.Researchers using the twinstudy method take advantage of which naturally occurring phenomenon?
A.Monozygotic twins have identical genes.
B.Dizygotic twins have similar genes.
C.Monozygotic twins are often treated alike by parents.
D.Dizygotic twins are more alike genetically than typical siblings.
ANS: A REF: 254
11.Two babies that come from different fertilized eggs may be
A.siblings.
B.dizygotic twins
C.unrelated
D.all of the above
ANS: D REF: 255
12.Personality researchers sometimes examine the personalities of children who were adopted shortly after birth. They do this because
A.these children were likely raised in a very supportive, nurturing environment.
B.genetic and environmental influences are not confounded like they are when examining children raised by their biological parents.
C.extensive records of the child’s health and early personality indicators are available.
D.the researchers want to know if adoption is traumatic for the children.
ANS: B REF: 256
13.A researcher using the twinstudy method finds an average correlation of .50 between monozygotic twins’ scores on a measure of selfesteem. The researcher finds an average correlation of .30 between dizygotic twins’ scores on this measure. The difference between the size of the correlations is statistically significant. What conclusion might the researcher draw from these results?
A.Genetics has more of an influence on selfesteem than environment has.
B.There is evidence for a genetic influence on selfesteem.
C.There is no evidence for a genetic influence on selfesteem.
D.The results are opposite of what would be expected if there were a genetic influence on selfesteem.
ANS: B REF: 256
14.A psychologist conducts research using the twin-study method. He administers a need for Achievement scale to sets of monozygotic and dizygotic twins and finds a correlation of .50 between the scores for pairs of monozygotic twins. If this study is to demonstrate evidence for a genetic influence on need for Achievement, what would we expect the correlation to be between scores for pairs of dizygotic twins?
A.Higher than .50
B.Lower than .50
C.Very close to .50
D.There is no way to demonstrate a genetic influence with these data.
ANS: B REF: 256
15.Which assumption is made by researchers using the twinstudy method?
A.Dizygotic twins share an environment that is more similar than the environment shared by monozygotic twins.
B.Monozygotic twins share an environment that is more similar than the environment shared by dizygotic twins.
C.Dizygotic twins share an environment that is just as similar as the environment shared by monozygotic twins.
D.Monozygotic twins will be treated more alike than dizygotic twins.
ANS: C REF: 255
16.Behavior genetics researchers have taken their data from twin studies and used formulas to estimate that about ______percent of the stability in adult personalities can be attributed to genetics.
A.10
B.20
C.30
D.40
ANS: D REF: 257
17.Compared to the results obtained using other research methods, the results from twinstudy research
A.probably underestimate the role of genetics in personality.
B.make a stronger case for the role of genetic influences on personality.
C.are less subject to criticisms about underlying assumptions.
D.often are not replicated.
ANS: B REF: 257 WWW
18.One problem with adoption studies is that the homes in which twins are placed
A.are so very different that comparisons cannot be made.
B.are often very similar because adoptive families are similar in important ways.
C.are highly specialized for adoptive parenting.
D.allow the same genetic influences to emerge.
ANS: B REF: 257
19.Although it is difficult to determine precisely how much of personality is determined by genetics, the results of twin studies suggest that genetics probably accounts for about ______percent of the variance of adult personality.
A.85
B.60
C.40
D.5
ANS: C REF: 257
20.The assumption that MZ and DZ twins are raised in equally similar environments can be problematic. Which of the following is a problem?
A.DZ twins may be treated more alike than identical twins.
B.MZ twins purposefully join different clubs and have different friends.
C.MZ twins may share more of their environment than DZ twins.
D.All of the above
ANS: C REF: 257
21.Which of the following is a problem for the assumption that MZ and DZ twins are raised in equally similar environments?
A.DZ twins may be treated more alike than identical twins.
B.MZ twins purposefully join different clubs and have different friends.
C.MZ twins may share more of their environment than DZ twins.
D.All of the above
ANS: C REF: 258
22.Which of the following kinds of data provides the weakest scientific evidence for a genetic influence on personality?
A.Twin-study data
B.Similarity between personalities of parents and children raised by their parents
C.Adoption studies data
D.Comparing personalities of twins separated at birth
ANS: B REF: 258 WWW
23.Critics have pointed to several weaknesses in the research used to make a case for the role of genetics on personality development. Their criticisms include each of the following points except one. Which one?
A.Dizygotic twins may share an environment more alike than the environment shared by monozygotic twins.
B.Families who adopt children are different from those who do not adopt.
C.Parents may treat adopted children differently than they treat biological children.
D.Parents of dizygotic twins may look for and emphasize the differences between the twins more than parents of monozygotic twins.
ANS: A REF: 258
24.Research on genetic determinants of personality tell us that
A.personality is fixed at birth.
B.most, but not all, of adult personality is determined by genetics.
C.a significant percentage of adult personality is determined by genetics, but experience also plays a large role.
D.except for a few traits, there is very little genetic influence on personality.
ANS: C REF: 258
25.Which of the following hypothetical research findings would present a problem for researchers trying to interpret results from a twin-study design?
A.Parents of monozygotic twins treat the two twins more alike than do parents of dizygotic twins.
B.Dizygotic twins don't look as much like one another as do monozygotic twins.
C.Parents treat female pairs of twins differently than they treat male twins.
D.There are more dizygotic twins born each year than monozygotic twins.
ANS: A REF: 258
26.Some investigators suggest that genetic influences on personality may not be seen unless a unique combination of more than one gene is inherited. Researchers refer to these complex influences as ______effects.
A.interactive
B.nonadditive
C.multiple-gene
D.compound
ANS: B REF: 259
27.The genetic influence of some personality traits may not be seen unless a specific combination of genes in inherited. Such complex influences are known as
A.monozygotic influences.
B.nonadditive effects.
C.combinatorial effects.
D.genetic correlations.
ANS: B REF: 259
28.One reason twin studies produce higher estimates of heritability than some other methods may be that the twin studies
A.capture nonadditive effects of genetics.
B.often incorrectly classify dizygotic and monozygotic twins.
C.are based on small samples.
D.overlook gender differences.
ANS: A REF: 259
29.Research on extraversionintroversion has found
A.consistent evidence for a genetic component to extraversionintroversion.
B.some evidence for a genetic component to extraversionintroversion, but a significant amount of research that disputes this.
C.almost no evidence for a genetic component to extraversionintroversion.
D.consistent evidence arguing against a genetic component to extraversionintroversion.
ANS: A REF: 259
30.Research on the genetic heritability of extraversion-introversion has made use of
A.brain electrical activity measures.
B.the twin-study method.
C.differences in sensitivity to stimulation.
D.only twins that have been reared together (in the same environment).
ANS: B REF: 260
31.One team of investigators examined where extraverts and introverts sat in the library. They based their predictions on which of the following notions?
A.Extraverts enjoy people more than introverts do.
B.Introverts are more likely to study in the library than extraverts.
C.Extraverts and introverts have different levels of preferred arousal and different sensitivity to stimulation.
D.Introverts are less spontaneous than extraverts.
ANS: C REF: 261
32.Research finds that, compared to introverts, extraverts tend to
A.be happier, but only on weekends.
B.be less happy.
C.have higher levels of subjective well-being and happiness.
D.be just about as happy, but they enjoy different things.
ANS: C REF: 263
33.A team of researchers examined where extraverts and introverts sat in the library. Which of the following did the team find?
A.Extraverts preferred open, accessible locations, whereas introverts preferred isolated locations.
B.Introverts preferred open, accessible locations, whereas extraverts preferred isolated locations.
C.Extraverts enjoyed open, accessible locations better, but got more work done in an isolated location.
D.a clear pattern for extraverts, but no preferred location for introverts
ANS: A REF: 261
34.Based on research on extraversionintroversion, which piece of advice seems justified?
A.Extraverts should isolate themselves in a quiet place if they are going to get any work done.
B.Introverts should move to a more stimulating environment if they are having trouble studying.
C.Because they are less aware of external disturbances than extraverts are, introverts should be better able to study in a room filled with potential distractions.
D.Introverts should study in quieter places than extraverts study.
ANS: D REF: 262
35.As reported in the textbook, research demonstrating a genetic influence on a person's level of extraversion-introversion comes primarily from research
A.using the twin-study method.
B.comparing adopted children and biological children to their parents.
C.comparing strength of relationship with similarity of personality scores.
D.comparing adopted children’s personalities with the personalities of their biological parents.
ANS: A REF: 260
36.Margaret is an extravert. She has to study for a test in the morning. Where is the most likely place she will choose to study?
A.In a quiet room
B.Alone in an isolated study area in the library
C.In an open area in the library where she can see a lot of other students
D.Outside in a place where others can't disturb her
ANS: C REF: 263
37.You know a woman who has many friends and is often out having fun. But this woman also typically acts before thinking, thus bringing her a lot of trouble. This woman isprobably
A.high on neuroticism.
B.low on neuroticism.
C.an extravert.
D.an introvert.
ANS: C REF: 263
38.Those acquaintances of yours who prefer quiet and perhaps isolated rooms in which to study are, according to research, more likely to be
A.neurotics.
B.extraverts.
C.introverts
D.of no particular personality.
ANS: C REF: 263
39.For extraverts, friends often serve as an important buffer against stress. This finding supports the idea that extraverts
A.are generally more anxious than introverts.
B.often find interacting with friends an unpleasant experience.
C.are less sensitive to information about rewards than introverts.
D.have higher positive affect due to greater social activity.
ANS: D REF: 265
40.The fact that friends often serve as a buffer against stress supports the idea that extraverts
A.are generally more anxious than introverts.
B.have higher positive affect due to greater social activity.
C.are less sensitive to information about rewards than introverts.
D.often find interacting with friends to be an unpleasant experience.
ANS: B REF: 265 WWW
41.A researcher asks extraverts and introverts to work on a series of math problems while listening to loud or soft music. Based on past research, we would expect to find that
A.the extraverts do better on the test, regardless of the music level.
B.the introverts do better when listening to loud music, the extraverts better when listening to soft music.
C.the extraverts do better when listening to loud music, the introverts better when listening to soft music.
D.introverts and extraverts do equally well regardless of how loud the music is playing.
ANS: C REF: 263
42.In one study introverts found themselves ______mood when the experimenter instructed them to act more extraverted.
A.in the same
B.in a better
C.in a sour
D.more sad in
ANS: B REF: 265
43.Research has found that extraverts are not always happier than introverts. Why not?
A.Extraverts are more likely to be impulsive.
B.Extraverts are more likely to be socially active.
C.Introverts do not involve themselves in activities that increase feelings of competence and worth.
D.Extraverts are more sensitive to positive feedback.
ANS: A REF: 266
44.A researcher reports that men in this country tend to marry younger women and women tend to marry older men. This finding might be used to support which theory?
A.Eysenck’s theory of personality
B.The five-factor model
C.The goodness of fit model
D.Evolutionary personality theory
ANS: D REF: 266
45.Which of the following is true about parental investment?
A.Males are more selective about with whom they choose to mate than females.
B.Males of many species are free to mate with as many females as they can.
C.Investment in selecting a mate is larger for males than for females.
D.Males select mates who are more likely to be good parents.
ANS: B REF: 267
46.According to evolutionary personality theory, men prefer physically attractive women because
A.the attributes we call beautiful are associated with youth and fertility.
B.physically attractive women tend to be in better health.
C.physically attractive women tend to be stronger and thus better able to survive.
D.they want physically attractive offspring.
ANS: A REF: 267 WWW
47.According to evolutionary personality theory, men and women base their choice of romantic partners in part on concerns for “parental investment.” This means we
A.want the parents of our spouses to be involved in the raising of our children.
B.select mates who are likely to contribute to successful reproduction and child-raising.
C.consider what the parents of our potential partners are like because personality is partly inherited from one’s parents.
D.prefer partners for whom both parents were actively involved with their children.
ANS: B REF: 266
48.The “lipstick effect” refers to
A.the application of more lipstick at different times during the ovulatory cycle.
B.how cosmetic marketing often heightens insecurity about one’s appearance.
C.the tendency for women to spend more money on cosmetics during bad economic times.
D.men who pay more attention to superficial beauty.
ANS: C REF: 268
49.Cross-cultural studies find similar patterns of what men and women look for in their spouses across many different cultures. These findings support evolutionary personality theory because they suggest that mate preferences do not merely reflect differences in
A.social learning patterns.
B.the genetic makeup of different cultures.
C.inherited human characteristics.
D.economic opportunities in different cultures.
ANS: A REF: 269
50.According to the parental investment model, women prefer men who are
A.the same age they are.
B.capable of achieving financial security.
C.physically attractive.
D.gentle and sensitive to their needs.
ANS: B REF: 271
51.Which of the following research findings do advocates of evolutionary personality theory point to as strong evidence for their interpretation of mate selection?
A.Most people eventually get married and have children.
B.College students today tend to get married for the same reasons college students got married a generation ago.
C.Men and women say they look for just about the same qualities in their spouses.
D.The qualities people say they look for in their spouses are the same reported by men and women from many different cultures.
ANS: D REF: 269