Galton believed that the high correlation between the intelligence levels of parents and children proved that intelligence was inherited. This conclusion illustrates a failure to understand
A) how correlations are calculated
B) the difference between statistically significant correlations and insignificant ones
C) the directionality problem
D) the third variable problem

Question

Quizplus · Accepted Answer

Galton's conclusion fails to consider the third variable problem, which suggests that a correlation between two variables might be influenced by an unaccounted third variable, such as environmental factors, rather than a direct causal relationship.

Galton Believed That the High Correlation Between the Intelligence Levels