Which of the Following Is a Valid Statement Relating to Research

question 16

Multiple Choice

Which of the following is a valid statement relating to research concerning genetic influence on cognitive abilities?

• A) Fraternal twins have higher correlations on scores of cognitive functioning than do monozygotic twins.
• B) Different types of cognitive abilities are influenced to the same extent by genetics.
• C) For general cognitive ability, heritability decreases with age.
• D) Meta-analyses of variance in IQ scores among twins suggest that 50% of the variance can be explained by genetic differences.

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Definitions:

Cognitive Psychology

The branch of psychology that studies mental processes including how people think, perceive, remember, and learn.

Social Psychology

The scientific study of how individuals think, feel, and behave in the context of social interactions and how they are influenced by the actual or implied presence of others.

Scientific Method

A systematic and logical approach to discovering how things in the universe work, involving observation, hypothesis formulation, experimentation, and conclusion.

Margin of Error

A statistic expressing the amount of random sampling error in a survey's results, indicating how much the survey results may deviate from the actual population values.