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Item Response Theory Modeling of the Philadelphia Naming Test
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| Zeitschriftentitel: | Journal of Speech, Language, and Hearing Research |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Journal of Speech, Language, and Hearing Research, 58, 2015, 3, S. 865-877 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Speech Language Hearing Association
|
| Schlagwörter: |
| author_facet |
Fergadiotis, Gerasimos Kellough, Stacey Hula, William D. Fergadiotis, Gerasimos Kellough, Stacey Hula, William D. |
|---|---|
| author |
Fergadiotis, Gerasimos Kellough, Stacey Hula, William D. |
| spellingShingle |
Fergadiotis, Gerasimos Kellough, Stacey Hula, William D. Journal of Speech, Language, and Hearing Research Item Response Theory Modeling of the Philadelphia Naming Test Speech and Hearing Linguistics and Language Language and Linguistics |
| author_sort |
fergadiotis, gerasimos |
| spelling |
Fergadiotis, Gerasimos Kellough, Stacey Hula, William D. 1092-4388 1558-9102 American Speech Language Hearing Association Speech and Hearing Linguistics and Language Language and Linguistics http://dx.doi.org/10.1044/2015_jslhr-l-14-0249 <jats:sec> <jats:title>Purpose</jats:title> <jats:p>In this study, we investigated the fit of the Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996) to an item-response-theory measurement model, estimated the precision of the resulting scores and item parameters, and provided a theoretical rationale for the interpretation of PNT overall scores by relating explanatory variables to item difficulty. This article describes the statistical model underlying the computer adaptive PNT presented in a companion article (Hula, Kellough, & Fergadiotis, 2015).</jats:p> </jats:sec> <jats:sec> <jats:title>Method</jats:title> <jats:p>Using archival data, we evaluated the fit of the PNT to 1- and 2-parameter logistic models and examined the precision of the resulting parameter estimates. We regressed the item difficulty estimates on three predictor variables: word length, age of acquisition, and contextual diversity.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>The 2-parameter logistic model demonstrated marginally better fit, but the fit of the 1-parameter logistic model was adequate. Precision was excellent for both person ability and item difficulty estimates. Word length, age of acquisition, and contextual diversity all independently contributed to variance in item difficulty.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusions</jats:title> <jats:p>Item-response-theory methods can be productively used to analyze and quantify anomia severity in aphasia. Regression of item difficulty on lexical variables supported the validity of the PNT and interpretation of anomia severity scores in the context of current word-finding models.</jats:p> </jats:sec> <jats:sec> <jats:title>Supplemental Material</jats:title> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://doi.org/10.23641/asha.6170306">https://doi.org/10.23641/asha.6170306</jats:ext-link> </jats:p> </jats:sec> Item Response Theory Modeling of the Philadelphia Naming Test Journal of Speech, Language, and Hearing Research |
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American Speech Language Hearing Association, 2015 |
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American Speech Language Hearing Association, 2015 |
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1092-4388 1558-9102 |
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| title |
Item Response Theory Modeling of the Philadelphia Naming Test |
| title_unstemmed |
Item Response Theory Modeling of the Philadelphia Naming Test |
| title_full |
Item Response Theory Modeling of the Philadelphia Naming Test |
| title_fullStr |
Item Response Theory Modeling of the Philadelphia Naming Test |
| title_full_unstemmed |
Item Response Theory Modeling of the Philadelphia Naming Test |
| title_short |
Item Response Theory Modeling of the Philadelphia Naming Test |
| title_sort |
item response theory modeling of the philadelphia naming test |
| topic |
Speech and Hearing Linguistics and Language Language and Linguistics |
| url |
http://dx.doi.org/10.1044/2015_jslhr-l-14-0249 |
| publishDate |
2015 |
| physical |
865-877 |
| description |
<jats:sec>
<jats:title>Purpose</jats:title>
<jats:p>In this study, we investigated the fit of the Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996) to an item-response-theory measurement model, estimated the precision of the resulting scores and item parameters, and provided a theoretical rationale for the interpretation of PNT overall scores by relating explanatory variables to item difficulty. This article describes the statistical model underlying the computer adaptive PNT presented in a companion article (Hula, Kellough, & Fergadiotis, 2015).</jats:p>
</jats:sec>
<jats:sec>
<jats:title>Method</jats:title>
<jats:p>Using archival data, we evaluated the fit of the PNT to 1- and 2-parameter logistic models and examined the precision of the resulting parameter estimates. We regressed the item difficulty estimates on three predictor variables: word length, age of acquisition, and contextual diversity.</jats:p>
</jats:sec>
<jats:sec>
<jats:title>Results</jats:title>
<jats:p>The 2-parameter logistic model demonstrated marginally better fit, but the fit of the 1-parameter logistic model was adequate. Precision was excellent for both person ability and item difficulty estimates. Word length, age of acquisition, and contextual diversity all independently contributed to variance in item difficulty.</jats:p>
</jats:sec>
<jats:sec>
<jats:title>Conclusions</jats:title>
<jats:p>Item-response-theory methods can be productively used to analyze and quantify anomia severity in aphasia. Regression of item difficulty on lexical variables supported the validity of the PNT and interpretation of anomia severity scores in the context of current word-finding models.</jats:p>
</jats:sec>
<jats:sec>
<jats:title>Supplemental Material</jats:title>
<jats:p>
<jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://doi.org/10.23641/asha.6170306">https://doi.org/10.23641/asha.6170306</jats:ext-link>
</jats:p>
</jats:sec> |
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| description | <jats:sec> <jats:title>Purpose</jats:title> <jats:p>In this study, we investigated the fit of the Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996) to an item-response-theory measurement model, estimated the precision of the resulting scores and item parameters, and provided a theoretical rationale for the interpretation of PNT overall scores by relating explanatory variables to item difficulty. This article describes the statistical model underlying the computer adaptive PNT presented in a companion article (Hula, Kellough, & Fergadiotis, 2015).</jats:p> </jats:sec> <jats:sec> <jats:title>Method</jats:title> <jats:p>Using archival data, we evaluated the fit of the PNT to 1- and 2-parameter logistic models and examined the precision of the resulting parameter estimates. We regressed the item difficulty estimates on three predictor variables: word length, age of acquisition, and contextual diversity.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>The 2-parameter logistic model demonstrated marginally better fit, but the fit of the 1-parameter logistic model was adequate. Precision was excellent for both person ability and item difficulty estimates. Word length, age of acquisition, and contextual diversity all independently contributed to variance in item difficulty.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusions</jats:title> <jats:p>Item-response-theory methods can be productively used to analyze and quantify anomia severity in aphasia. Regression of item difficulty on lexical variables supported the validity of the PNT and interpretation of anomia severity scores in the context of current word-finding models.</jats:p> </jats:sec> <jats:sec> <jats:title>Supplemental Material</jats:title> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://doi.org/10.23641/asha.6170306">https://doi.org/10.23641/asha.6170306</jats:ext-link> </jats:p> </jats:sec> |
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| spelling | Fergadiotis, Gerasimos Kellough, Stacey Hula, William D. 1092-4388 1558-9102 American Speech Language Hearing Association Speech and Hearing Linguistics and Language Language and Linguistics http://dx.doi.org/10.1044/2015_jslhr-l-14-0249 <jats:sec> <jats:title>Purpose</jats:title> <jats:p>In this study, we investigated the fit of the Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996) to an item-response-theory measurement model, estimated the precision of the resulting scores and item parameters, and provided a theoretical rationale for the interpretation of PNT overall scores by relating explanatory variables to item difficulty. This article describes the statistical model underlying the computer adaptive PNT presented in a companion article (Hula, Kellough, & Fergadiotis, 2015).</jats:p> </jats:sec> <jats:sec> <jats:title>Method</jats:title> <jats:p>Using archival data, we evaluated the fit of the PNT to 1- and 2-parameter logistic models and examined the precision of the resulting parameter estimates. We regressed the item difficulty estimates on three predictor variables: word length, age of acquisition, and contextual diversity.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>The 2-parameter logistic model demonstrated marginally better fit, but the fit of the 1-parameter logistic model was adequate. Precision was excellent for both person ability and item difficulty estimates. Word length, age of acquisition, and contextual diversity all independently contributed to variance in item difficulty.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusions</jats:title> <jats:p>Item-response-theory methods can be productively used to analyze and quantify anomia severity in aphasia. Regression of item difficulty on lexical variables supported the validity of the PNT and interpretation of anomia severity scores in the context of current word-finding models.</jats:p> </jats:sec> <jats:sec> <jats:title>Supplemental Material</jats:title> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://doi.org/10.23641/asha.6170306">https://doi.org/10.23641/asha.6170306</jats:ext-link> </jats:p> </jats:sec> Item Response Theory Modeling of the Philadelphia Naming Test Journal of Speech, Language, and Hearing Research |
| spellingShingle | Fergadiotis, Gerasimos, Kellough, Stacey, Hula, William D., Journal of Speech, Language, and Hearing Research, Item Response Theory Modeling of the Philadelphia Naming Test, Speech and Hearing, Linguistics and Language, Language and Linguistics |
| title | Item Response Theory Modeling of the Philadelphia Naming Test |
| title_full | Item Response Theory Modeling of the Philadelphia Naming Test |
| title_fullStr | Item Response Theory Modeling of the Philadelphia Naming Test |
| title_full_unstemmed | Item Response Theory Modeling of the Philadelphia Naming Test |
| title_short | Item Response Theory Modeling of the Philadelphia Naming Test |
| title_sort | item response theory modeling of the philadelphia naming test |
| title_unstemmed | Item Response Theory Modeling of the Philadelphia Naming Test |
| topic | Speech and Hearing, Linguistics and Language, Language and Linguistics |
| url | http://dx.doi.org/10.1044/2015_jslhr-l-14-0249 |