The purpose of this study is to investigate the effects of PECS intervention using AAC
(Augmntative and Alternative Communication) in requesting objects of young children wit
h mental retardation.
Four young children with mental retardation who were in nonverbal language and show
ed few conventional forms of requesting objects participated in this study. Using Multiple
probe design across subjects, The percentage of requesting objects was measured. The foll
owing questions were addressed:(1) The acquisition, generalization and maintenance of re
asonable requesting objects with PECS intervention using AAC (2) The increase of verbal
language in requestion function through PECS intervention using AAC (3) The generalizati
on to new objets, adults and place of reasonable requesting objects
The results of this study were as follows:
First, Through PECS intervention using AAC in requesting objects of young children w
ith mental retardation, the level of advanced performance in requestion objects was increa
sed Second, The level of verbal language with PECS intervention using AAC was increas
ed.
Third, The increased level of advanced performance in requesting objects was generaliz
ed to new objects, adults, and place.
The results from this investigation suggest that PECS intervention using AAC is effecti
ve in requesting objects of young children with mental retardation