aidsanddevices aphasia child childrenwithdisabilities cognitivetherapy communicativedisordersinchildren diagnosis dyslexia earlyintervention(education) education group headinjuries infant languagearts languagedisorders languagedisordersinchildren linguistics methods psychotherapy rc428 reading readingdisability rehabilitation remedialteaching special speechdisorders speechtherapy speechtherapyforchildren therapy treatment unitedstates wm475t243s1981