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المؤلفون: Elinor Kriegsmann, Annette Meyers, Jill C. Gallaher
المصدر: Exceptional Children. 48:436-445
مصطلحات موضوعية: Male, Early childhood education, Concept Formation, Sign language, Education, Developmental psychology, Sign Language, Nonverbal communication, Mode (computer interface), Intervention (counseling), Developmental and Educational Psychology, Humans, Speech, Language Development Disorders, 0501 psychology and cognitive sciences, Child, Language construct, Language Disorders, Manual Communication, 05 social sciences, 050301 education, Sign (semiotics), Cognition, Child, Preschool, Psychology, Goals, 0503 education, 050104 developmental & child psychology