An international study group, led by John Vessey of the Center for Research on the Brain of the Faculty of Medicine at the University of Vienna, identified a homolgue of Pum named Pum 2, that is found in the somato-dendrites of the hippocampal neurons of mammals.
The literature demonstrates the extreme complexity of the relation between Specific Learning Disorders and Intelligence. The main difficulty is in the construction of the definitions. In fact, the scientific community identifies important limitations in the way in which it now defines and evaluates learning disorders and intelligence.