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Dataset: Language Development of Non-verbal Children Age 3 Years through 7 Years, 2007 to 2012 [Kansas City Metro Area] ()

Basic Information
Dataset Full Name Language Development of Non-verbal Children Age 3 Years through 7 Years, 2007 to 2012 [Kansas City Metro Area]
Dataset Acronym

The Language Development of Non-verbal Children Age 3 Years through 7 Years in the Kansas Metro Area is one of the three projects in the Communication of People with MR, 2006 to 2012 Series, focusing on identifying participant variables related to success in improving communication skills of young individuals with intellectual disabilities (see "other related datasets" below). Select preschool-age children with intellectual and developmental disabilities, including those with autism and Downs Syndrome were identified as candidates for augmentative and alternative communication (criteria included 8 specific requirements for participation). Children were recruited through school districts in and near the Kansas City metropolitan area, Kansas. 

The data for this study were collected to determine how acquisition of symbolic communication using Voice Output Communication Aid (VOCA) affects the development of successful communication exchanges. Dataset 1 is limited to a sample of English speaking children. Dataset 2 includes limited baseline assessment measures of a small sample of Spanish speaking children.

Key Terms

Developmental disability, Autism, Children, Speech impairment, Communication, non-verbal, Special education, Preschool age

Study Design Longitudinal
Data Type(s) Administrative
Sponsoring Agency/Entity

Department of Health and Human Services

National Institutes of Health

Eunice Kennedy Shriver National Institute of Child Health and Human Development

Health Conditions/Disability Measures
Health Condition(s)

Down syndrome, Autism spectrum disorders

Disability Measures

Intellectual disability, Developmental disabilities

Measures/Outcomes of Interest

Communication, Non-verbal communication, Assistive technology (AT), Augmentative or alternative communication (AAC), Voice Output Communication Aid (VOCA), Cognitive development, Comprehension, Play

Sample Population

Individuals ages 3-5 years with intellectual and developmental disabilities with minimal communication skills. 

Sample Size/Notes

Dataset 1 (English speaking sample):

  • 93 assessed at time 1
  • 82 assessed a year later (time 2)

Dataset 2 (Spanish speaking sample):

  • 19 assessed at time 1
  • 16 assessed a year later (time 2)
Unit of Observation



North America


United States

Geographic Coverage

Kansas City metropolitan area 

Geographic Specificity


Special Population(s)


Data Collection
Data Collection Mode

Multiple modes:

  • Coded observations
  • Cognitive assessment tests
  • In-person interview
  • Web-based survey
Years Collected

2007 - 2012

Data Collection Frequency

Baseline and 1 year followup

Strengths and Limitations

Assessment included the following scales:

  •     Communication Complexity Scale
  •     Mullen Scales of Early Learning
  •     Peabody Picture Vocabulary Test
  •     Preschool Language Scale

English version only:

  •     Design to Learn 
  •     Early Childhood Environment Rating Scale


Some time 2 sample attrition

Small Spanish population sample size

Spanish version only collected at baseline and excluded 2 of the 6 scales used in the English version (Design to Learn and Early Childhood Environment Rating Scales).

Data Details
Primary Website


Data Access


Data Access Requirements

 Public Use Dataset - de-identified (information is edited or masked to protect respondent identity)

 Data Use agreement, No cost (includes most demographics information)

Summary Tables/Reports



Data Components
  • Dataset 1 (English speaking sample)
  • Dataset 2 (Spanish speaking sample)
Similar/Related Dataset(s)

Requests for Assistance with Adaptive Switches from Individuals with Severe Communication Impairments, 2007 to 2012 [California, Kansas, and Washington] (ICPSR 36515)

Young Children with Physical Disabilities, 2007 to 2012 [Seattle, Washington] (ICPSR 36516)

Selected Papers
Other Papers




Data Documentation:


Related Repositories

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The Rehabilitation Research Cross-dataset Variable Catalog has been developed through the Center for Large Data Research & Data Sharing in Rehabilitation (CLDR). The Center for Large Data Research and Data Sharing in Rehabilitation involves a consortium of investigators from the University of Texas Medical Branch, Cornell University's Yang Tan Institute (YTI), and the University of Michigan. The CLDR is funded by NIH - National Institute of Child Health and Human Development, through the National Center for Medical Rehabilitation Research, the National Institute for Neurological Disorders and Stroke, and the National Institute of Biomedical Imaging and Bioengineering. (P2CHD065702).

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Acknowledgements: This tool was developed through the efforts of William Erickson and Arun Karpur, and web designers Jason Criss and Jeff Trondsen at Cornell University. Many thanks to graduate students Kyoung Jo Oh and Yeong Joon Yoon who developed much of the content used in this tool.

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