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A comparison of children with SLI and control children on the PPVT-R and the PPVT-III: Effects of test revision on sensitivity to affectedness |
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Mabel Rice - University of Kansas
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Andrea Ash - University of Kansas
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Alyson Abel - University of Kansas
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Jae-Hoon Lee - Univeristy of Kansas
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| SRCLD Year: |
2008 |
| Presentation Type: |
Poster Presentation |
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| Presentation Time: |
(na) |
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This study examined how the normative sampling for standardized tests may affect the identification of children with specific language impairment (SLI). This study examined the sensitivity of the PPVT-R and PPVT-III to SLI. Participants included 249 children between the ages of 4 and 17 years. Children received the PPVT-R and PPVT-III in a counterbalanced order and were placed into non-affected (n = 128) or affected (n = 121) categories based upon their performance on either the TOLD-P2 or the CELF-3. PPVT-III standard scores were higher than those on the PPVT-R. An ANOVA found significant group differences that did not vary with children's age. Chi-square analyses revealed low sensitivity levels and high specificity levels for both test versions. Multiple regression analyses confirmed the higher unique sensitivity of the PPVT-R versus the PPVT-III when controlling for the other version. Lower sensitivity levels in the PPVT-III highlight the problems with sensitivity that may arise when standardized sampling shifts the normative distribution. |
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