Means of communication Deaf 146 Research 68 Sign language 43 Deaf children 33 Education 28 Language 27 more ... American Sign Language 21 Psychological aspects 18 Deafness 14 Social aspects 14 Case studies 13 Family relationships 13 Speech perception 12 Communication devices for people with disabilities 11 Study and teaching 11 Hearing impaired 9 Hearing impaired children 9 Testing 9 Children with mental disabilities 8 Interpreters for the deaf 8 Lipreading 8 Mother and child 8 Audiometry, Speech 7 Oral communication 6 Speech, Intelligibility of 6 Telecommunications devices for the deaf 6 Language acquisition 5 Nonverbal communication 5 Parent and child 5 less ...