You Are Trying to Interpret the Data from a Twin

You are trying to interpret the data from a twin study on happiness that was recently published. The researchers measured self-reported happiness across various sets of twins who were either identical or fraternal, and either raised together or apart. If they found that the identical twins raised together were no more similar to each other on a self-reported measure of happiness than the identical twins raised apart, what would that suggest?

A) A strong influence of genetic factors.
B) A strong influence of environmental factors.
C) A strong influence of both genetic and environmental factors.
D) A weak influence of genetics factors and a strong influence of environmental factors.
E) None of these interpretations would make sense, based on that result.

Correct Answer:

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