Causative experiments are quite different from correlations. Correlations are observations only, causative experiments are not. To determine causation we'd hav

Causative experiments are quite different from correlations. Correlations are observations only, causative experiments are not. To determine causation we'd have to have a set of isolated people and a set of social people and for each set we deliberately pick half and raise the isolated people to be more social while making social people become more isolated. Then we record IQs. Only this experiment will determine causation.