Which of the Following Is an Accurate Statement About Conclusions

question 30

Multiple Choice

Which of the following is an accurate statement about conclusions based on twin studies?

• A)Because identical twins have the same genotype,similarities can be linked to genetic influences,while differences can be linked to environmental factors.
• B)Identical twins are similar because of their common genes,while fraternal twins are as different as non-twin siblings.
• C)Similarities cannot be attributed to genetics exclusively,because the environment for identical twins is often more similar than for fraternal twins or siblings.
• D)Identical twins are the best subjects for teasing apart the effects of nature and nurture.

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Definitions:

Ratio Scale

A scale of measurement in which there is an absolute zero point, indicating an absence of the variable being measured. An implication is that ratios of numbers on the scale can be formed (generally, these are physical measures such as weight or timed measures such as duration or reaction time).

Ordinal Scale

A measurement scale that categorizes variables based upon their order or rank, without specifying the exact differences between ranks.

Direction of Difference

Describes whether the relationship between variables indicates a positive or negative association in statistical analysis.

Research Hypothesis

A specific, testable prediction about the expected outcome of a study or experiment.