THE VOCABULARY ACQUISITION BY INTELLECTUALLY DISABLED CHILDREN IN SDLB NEGERI 117709 KAMPUNG BARU RANTAUPRAPAT

This study deals with the process of the vocabulary acquisition by intellectually disabled children in SDLB Negeri 117709 Kampung Baru Rantauprapat. In their words this research focused on investigation acquisition on Indonesian Class Words which are produce by Intellectually Disabled, they are noun, verb, adjective, adverb, pronoun, numeral, and function words. This research applied qualitative research design. The subjects of this research are four intellectually disabled children that 10 -15 years old. The instrument of collecting the data applied tape recorder, notebook and digital camera. The technique of data analysis used descriptive technique and the data were described through the process transcribing. The findings of this research tend have different acquisition of subject matter such as nouns, verbs, adjectives, pronoun, adverbs, numerals and function words, they are S1 acquires 24 nouns, 10 verbs, 1 adjective and 1 Adverb, S2 acquires 23 nouns, 10 verbs, 1 adjective, and 1 adverb, S3 acquires 13 nouns, and 2 verbs, and S4 acquires 25 nouns, 10 verbs, 2 adjectives and 1 adverb. Based on their vocabulary that the intellectually disabled children acquire the vocabulary acquisition are dominated by noun or concrete words. The subjects acquired the words in term of process developed such as learn a word through its sound with its meaning, and appreciate the meaning of a word. Then, to get all of the vocabulary, the children will make communication with all of people surrounding them such family because they cannot socialize with the children in their surroundings because they only are in the house and not socialize with others children.