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Value-Added Predictors Of Expressive And Receptive Language Growth : Article Analysis

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In the article, Value-Added Predictors of Expressive and Receptive Language Growth in Initially Nonverbal Preschoolers with Autism Spectrum Disorders (2014), eighty-seven preschoolers that were diagnosed with ASD by DSM-IV and were non-verbal prior to this study participated in this research. The researchers had two questions to ponder:

1. Which of the nine alleged theoretically-motivated predictors along with two background variables added value in predicting expressive growth? The alleged theoretically-motivated predictors of expressive growth were early receptive vocabulary, object play, responding to joint attention, intentional communication, attention during child-directed speech (ACDS), motor functioning, consonant inventory, and …show more content…

Additionally, the authors certainly expressed what they established in their research. The introduction provided sufficient information concerning the subjects. Furthermore, the authors provided in-depth information on how they selected the control sample.

Describe the use of Correlation

The correlation coefficient or r is used to measure how strong a relationship is between two variables (Aron, Coups, & Aron, 2013). The closer r is to +1 or -1 the more closely the two variables are related. If r is close to 0 then there is no relationship between the two variables. The correlation coefficient r measures the strength and direction of two variables on a scatterplot to determine if a linear relationship exists. In the article Value-Added Predictors of Expressive and Receptive Language Growth in Initially Nonverbal Preschoolers with Autism Spectrum Disorders (2014), the r values were employed to four elements of putative predicators in expressive language growth and five elements of putative predicators in receptive language growth. In addition, the r-values were assigned to the two variables expressive language growth and receptive language growth. The results for expressive language growth revealed that the p-value for intentional communication and consonant inventory were p<.001; parental linguistic was p<.01; responding to joint attention was p<.05, revealed that the predicators for expressive language had

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