The Diagnostic Accuracy and Construct Validity of the Structured Photographic Expressive Language Test—Preschool: Second Edition Purpose In order to support evidence-based practice, this study served to evaluate the diagnostic accuracy, convergent validity, and divergent validity of the Structured Photographic Expressive Language Test—Preschool: Second Edition (SPELT–P2; J. Dawson, J. A. Eyer, J. Fonkalsrud, 2005) in order to determine whether it can be used as a valid ... Research Article
Research Article  |   April 01, 2009
The Diagnostic Accuracy and Construct Validity of the Structured Photographic Expressive Language Test—Preschool: Second Edition
 
Author Affiliations & Notes
  • Kathryn J. Greenslade
    University of Arizona, Tucson
  • Elena Plante
    University of Arizona, Tucson
  • Rebecca Vance
    University of Arizona, Tucson
  • Contact author: Elena Plante, P.O. Box 210071, Department of Speech, Language, and Hearing Sciences, The University of Arizona, Tucson, AZ 85721-0071. E-mail: eplante@email.arizona.edu.
Article Information
Special Populations / Early Identification & Intervention / School-Based Settings / Language Disorders / Specific Language Impairment / Research Articles
Research Article   |   April 01, 2009
The Diagnostic Accuracy and Construct Validity of the Structured Photographic Expressive Language Test—Preschool: Second Edition
Language, Speech, and Hearing Services in Schools, April 2009, Vol. 40, 150-160. doi:10.1044/0161-1461(2008/07-0049)
History: Received July 16, 2007 , Accepted July 29, 2008
 
Language, Speech, and Hearing Services in Schools, April 2009, Vol. 40, 150-160. doi:10.1044/0161-1461(2008/07-0049)
History: Received July 16, 2007; Accepted July 29, 2008
Web of Science® Times Cited: 29

Purpose In order to support evidence-based practice, this study served to evaluate the diagnostic accuracy, convergent validity, and divergent validity of the Structured Photographic Expressive Language Test—Preschool: Second Edition (SPELT–P2; J. Dawson, J. A. Eyer, J. Fonkalsrud, 2005) in order to determine whether it can be used as a valid measure for identifying language impairment in preschoolers.

Method The SPELT–P2 was administered to 54 children with typically developing language and 42 children with specific language impairment.

Results A discriminant analysis revealed good sensitivity (90.6%), good specificity (100%), and good positive and negative likelihood ratios, with a standard score cutoff point of 87 used to determine group membership. Analyses of convergent and divergent validity also supported use of the SPELT–P2 for identifying language impairment in preschoolers.

Implications The empirical evidence supports use of the SPELT–P2 as a valid measure for correctly identifying the presence or absence of language impairment in 4- and 5-year-old preschool children.

ACKNOWLEDGMENT
This work was completed as a master’s thesis by the first author. It was supported by National Institute of Deafness and Other Communication Disorders Grant R01 DC04726.
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