Validitas Konstruk Peabody Picture Vocabulary Test-Edisi Keempat (PPVT-4) pada Anak dengan Sindrom Down

Abstract

Receptive language is importance to facilitate the acquisition of language skills. Measuring receptive language skills is crucial, especially for children with language limitations, such as children with Down Syndrome (DS). This study aims to examine the construct validity of the Peabody Picture Vocabulary Test - Fourth Edition (PPVT-4) in children with DS. The research respondents consisted of 98 children with DS who are members of Persatuan Orang Tua Anak dengan Down Syndrome (POTADS) in the Jakarta, Bandung and Padang. Data were collected individually and administered by a psychologist. Data were analyzed using confimatory factor analysis (CFA). The results show that the one-factor model for set-1 to set-10 fit with the data and all items were valid, except for item 106. The implication is the PPVT-4 can be used to measure receptive language abilities of children with DS and estimate of the age equivalent of receptive language abilities.