Research Article  |   August 2010
Measurement Properties and Classification Accuracy of Two Spanish Parent Surveys of Language Development for Preschool-Age Children
Author Affiliations & Notes
  • Mark Guiberson
    University of Northern Colorado, Greeley
  • Barbara L. Rodríguez
    The University of New Mexico, Albuquerque
  • Contact author: Mark Guiberson, University of Northern Colorado—Audiology and Speech Language Sciences, Gunter Hall, Campus Box 140, Greeley, CO 80639. E-mail: mark.guiberson@unco.edu.
Development / Special Populations / Cultural & Linguistic Diversity / Research Article
Research Article   |   August 2010
Measurement Properties and Classification Accuracy of Two Spanish Parent Surveys of Language Development for Preschool-Age Children
American Journal of Speech-Language Pathology August 2010, Vol.19, 225-237. doi:10.1044/1058-0360(2010/09-0058)
History: Accepted 19 Mar 2010 , Received 02 Jul 2009 , Revised 17 Dec 2009
American Journal of Speech-Language Pathology August 2010, Vol.19, 225-237. doi:10.1044/1058-0360(2010/09-0058)
History: Accepted 19 Mar 2010 , Received 02 Jul 2009 , Revised 17 Dec 2009

Purpose: To describe the concurrent validity and classification accuracy of 2 Spanish parent surveys of language development, the Spanish Ages and Stages Questionnaire (ASQ; Squires, Potter, & Bricker, 1999) and the Pilot Inventario–III (Pilot INV–III; Guiberson, 2008a).

Method: Forty-eight Spanish-speaking parents of preschool-age children participated. Twenty-two children had expressive language delays, and 26 had typical language development. The parents completed the Spanish ASQ and the Pilot INV–III at home, and the Preschool Language Scale, Fourth Edition: Spanish Edition (PLS–4 Spanish; Zimmerman, Steiner, & Pond, 2002) was administered to the children at preschool centers.

Results: The Spanish ASQ and Pilot INV–III were significantly correlated with the PLS–4 Spanish, establishing concurrent validity. On both surveys, children with expressive language delays scored significantly lower than children with typical development. The Spanish ASQ demonstrated unacceptably low sensitivity (59%) and good specificity (92%), while the Pilot INV–III demonstrated fair sensitivity (82%) and specificity (81%). Likelihood ratios and posttest probability revealed that the Pilot INV–III may assist in detection of expressive language delays, but viewed alone it is insufficient to make an unconditional screening determination.

Conclusions: Results suggest that Spanish parent surveys hold promise for screening language delay in Spanish-speaking preschool children; however, further refinement of these tools is needed.

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