Kids do not grow in lock-step. I.e., kids who will have exactly the same height as adults will have (probably considerably) different heights at the same age wh

Kids do not grow in lock-step. I.e., kids who will have exactly the same height as adults will have (probably considerably) different heights at the same age while growing up. Given that, i doubt height measured at any one (age)point during childhood strongly correlates with iq. You'd need sufficient data to be able to reliably predict height as an adult for that, would be my guess.