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. 2015 May;45(5):1254-70.
doi: 10.1007/s10803-014-2286-4.

Value-added predictors of expressive and receptive language growth in initially nonverbal preschoolers with autism spectrum disorders

Paul Yoder  1 , Linda R Watson, Warren Lambert
Affiliations

Value-added predictors of expressive and receptive language growth in initially nonverbal preschoolers with autism spectrum disorders

Paul Yoder et al. J Autism Dev Disord. 2015 May.

Abstract

Eighty-seven preschoolers with autism spectrum disorders who were initially nonverbal (under 6 words in language sample and under 21 parent-reported words said) were assessed at five time points over 16 months. Statistical models that accounted for the intercorrelation among nine theoretically- and empirically-motivated predictors, as well as two background variables (i.e., cognitive impairment level, autism severity), were applied to identify value-added predictors of expressive and receptive spoken language growth and outcome. The results indicate that responding to joint attention, intentional communication, and parent linguistic responses were value-added predictors of both expressive and receptive spoken language growth. In addition, consonant inventory was a value-added predictor of expressive growth; early receptive vocabulary and autism severity were value-added predictors of receptive growth.

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Fig. 1
Example of process used to reduce the number of putative predictors
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