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ERIC Number: EJ973742
Record Type: Journal
Publication Date: 2012-Sep
Pages: 8
Abstractor: As Provided
ISSN: ISSN-1534-5084
Psychometric Analysis of the Diagnostic Evaluation of Language Variation Assessment
Petscher, Yaacov; Connor, Carol McDonald; Al Otaiba, Stephanie
Assessment for Effective Intervention, v37 n4 p243-250 Sep 2012
This study investigated the psychometrics of the "Diagnostic Evaluation of Language Variation-Screening Test" (DELV-S) test using confirmatory factor analysis, item response theory, and differential item functioning (DIF). Responses from 1,764 students in kindergarten through second grade were used in the study, with results indicating that the DELV-S is multidimensional and measures syntactic skills and nonword repetition ability. Item response theory suggested that most items were easy and that the measured skills were most reliable for students who had low language abilities. Standardized effect sizes for DIF suggested small differences existed on syntactic skills between white and minority students. Scores were vertically scaled to produce reference tables to assess performance at specific points in time, as well as growth over time. (Contains 2 tables and 1 figure.)
SAGE Publications and Hammill Institute on Disabilities. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Early Childhood Education; Elementary Education; Grade 1; Grade 2; Kindergarten; Primary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Florida
IES Funded: Yes
Grant or Contract Numbers: R305B070074; R305F100005