Which of the Following Observations Provides the Best Evidence That

question 61

Multiple Choice

Which of the following observations provides the best evidence that intelligence test scores are influenced by environment?

• A) Identical twins raised apart are less similar in their intelligence scores than identical twins raised together.
• B) The intelligence scores of children are positively correlated with those of their parents.
• C) Identical twins are more similar in their intelligence scores than are fraternal twins.
• D) The intelligence scores of siblings raised together are positively correlated.

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Definitions:

Degrees Of Freedom

The number of independent pieces of information on which a statistical estimate is based, minus the number of parameters estimated.

Groups

Collections of individuals or items classified together based on common characteristics or for the purpose of analysis.

Total N

The total number of observations or participants in a study or dataset.

Expected Frequencies

The counts or proportions one would expect in categories of a contingency table if there were no association between the variables.