There is no medical basis for the claim that an uncooperative baby is smart. nt exams are done mainly through ultrasound to monitor the thickness of the fetal hyaline layer. Since the examination is done at 12~13 weeks of pregnancy, there is no such thing as an uncooperative baby. If the ultrasound is not visible, it may be due to the baby’s position or the placenta, which is not the subjective uncooperative baby, so there is no such thing as an uncooperative nt baby is smart, these are all internet rumors.