Exam 10: The Biological Approach: Relevant Research

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?

Researchers have difficulty determining genetic influences on personality when they simply compare children with their parents.This is because

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

One limitation of evolutionary personality theory with regard to mate selection is that

Extraverts are less likely than introverts to seek out tasks that will make them happy.

Researchers use the twin-study method to

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.

Which assumption is made by researchers using the twin-study method?

The assumption that MZ and DZ twins are raised in equally similar environments can be problematic. Which of the following is a problem?

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?

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?

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

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.

Suppose you design a personality study in which you plan to use the twin-study method.You are probably conducting research to examine the

The most popular method used to examine the role of genetics and the environment in personality is the factor analysis method.

Which of the following is true about parental investment?

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

The twin-study method is used by researchers to get around which methodological problem?

One problem with adoption studies is that the homes in which twins are placed