Evidence from Identical Twin Studies Suggests That

question 9

Multiple Choice

Evidence from identical twin studies suggests that:

• A)correlations of intelligence levels are similar to those of fraternal twins.
• B)genes play a significant role in determining intelligence,with high correlations regardless of environmental factors.
• C)environmental influences significantly outweigh genetic influences.
• D)intelligence is 100% environmental.

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Definitions:

Ch-Squared Distribution

A statistical distribution describing the sum of the squares of variables that follow a standard normal distribution; often used in hypothesis testing.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution or test without violating any constraints.

Confidence Interval

An estimated range of values calculated from a sample that is likely to cover the true population parameter with a certain level of confidence.

Population Variance

A measure of the dispersion or spread of a set of data points in a population, quantifying how much the members of a population differ from the population mean.