Abstract ▼ AI-Helper

This study aimed to discover the affects of language intervention through picture exchange communication system(PECS) on the spontaneous oral expression of children with developmental delay. With this aim, the study established the following research questions. First, how does language intervention ...

This study aimed to discover the affects of language intervention through picture exchange communication system(PECS) on the spontaneous oral expression of children with developmental delay. With this aim, the study established the following research questions. First, how does language intervention with the use of picture exchange communication system(PECS) effect the spontaneous oral expression performance of children with developmental delay? Second, how does language intervention with the use of the picture exchange communication system(PECS) effect the Mean Length of Utterance of children with developmental delay? Third, how does language intervention with the use of picture exchange communication system(PECS) effect the vocabulary expression of children with developmental delay? Fourth, is the change in language intervention with the use of picture exchange communication system(PECS) maintained after the closing of the test situation? Concerning research methods, the study conducted multiple baseline designs and pretests and posttests. Children who were subject to the research showed serious delays in expressive language relative to their chronological ages. Also, the study selected 3 children with very serious developmental delays in expressive language and significantly low spontaneous oral expression, and mediated them for 30 minutes 4-5 times a week for 2 months. The intervention employed a PECS procedure which was applied with phased modification. The results of the research include the following. First, language intervention through the PECS increased the performance of spontaneous speech in children with developmental delay. Second, language intervention through the PECS increased the Mean Length of Utterance in children with developmental delay. Third, language intervention through the PECS increased the acquisition of vocabularies in children with developmental delay. Fourth, language intervention through the PECS maintained newly acquired vocabularies as well as spontaneous speech even after the mediation. Based on the results, language intervention through the PECS was demonstrated to have an affirmative effect on the spontaneous oral expression of children with developmental delay through an increase in spontaneous performance, Mean Length of Utterance, and acquisition of new vocabularies.

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