Suppose a Researcher Finds a Correlation Coefficient of

Multiple Choice

Suppose a researcher finds a correlation coefficient of .40 between identical twins' scores on a measure of a personality trait. She additionally finds a correlation coefficient of .40 between fraternal twins' scores on the same measure. What might she conclude regarding the genetic and environmental bases of the trait

A) The trait reflects shared environmental factors because the two coefficients are moderate and similar.
B) The trait reflects genetic factors because the coefficients are moderate.
C) The trait reflects shared environmental factors because the two coefficients are not especially high.
D) The trait reflects non-shared environmental factors because the two coefficients are not especially high.