One hundred twenty-nine children with school problems were compared with 30 normal children to determine if children who are underachievers in school are neurologically identifiable. The frequency of neurological findings was greater in underachievers but positive neurological findings were not limited to them.
Hart Z, Rennick PM, Klinge V, Schwartz ML. A Pediatric Neurologist's Contribution to Evaluations of School Underachievers. Am J Dis Child. 1974;128(3):319-323. doi:10.1001/archpedi.1974.02110280049006