“…As recent history has shown, the LD label has helped to focus the attention of professionals and laymen on the existence of several million educationally handicapped individuals who are in need of specialized instruction (Chalfan t & Scheffelin, 1969 ;Mercer, Forgnone, &Wolking, 1976). On the other hand , the LD label has masked the presence of extreme heterogeneity manifested in the kind and degree of severity of educational handicaps (Epstein, Hallahan, &Kauffman, 1975;Owen, Braggio, & Ellen, 1976). As a result, recent attempts to effectively identify, describe, predict, and remediate these educational handicaps have met with limited success (Larsen & Hammill, 1975;Ysseldyke & Bahin, 1974;Ysseldyke & Sabatino, 1973).…”