Establishment of symbolic communication in persons with severe retardation.

摘要: For persons with severe retardation, learning to communicate symbolically is a complex long-term process requiring the coordination of many components succeed. Three four institutionalized adolescents and young adults retardation who participated in this study learned use lexigrams request foods and, subsequently, objects. Although their skill did not initially generalize labeling comprehension tasks, additional experience resulted consistent improvement performance both tasks. The emergence subject-initiated lexigram communications facilitation spoken language and/or production were also observed.