Evaluation of Vanluewen

Useful - Could test at a young age to identify low IQ, and then provide early intervention-support to help develop general cognitive skills. Research Method – Correlational research – even a perfect correlation of 1 would not allow us to conclude that genes CAUSE intelligence. Determinism – Suggests that our genes determine who we mate with, and then our children’s intelligence is determined by that, and so on. Sample – Reasonable size, all Dutch, good to use both types of twin (MZ/DZ), plus siblings.