caa a22 4500 606238697 CHVBK 20210128101259.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s10862-014-9468-4 doi (NATIONALLICENCE)springer-10.1007/s10862-014-9468-4 Psychometric Analysis of the Social Communication Questionnaire Using an Item-Response Theory Framework: Implications for the Use of the Lifetime and Current Forms [Elektronische Daten] [Tianlan Wei, Steven Chesnut, Lucy Barnard-Brak, David Richman] The Social Communication Questionnaire (SCQ) was developed as a screener of Autism Spectrum Disorder (ASD). To date, the majority of theSCQ utility studies focused on its external validity (e.g., ROC curve analyses), but very few have addressed theinternal validity issues. With samples consisting of 2,134 individuals available from the National Database for Autism Research (NDAR), the current study examined the factor structure, item-level characteristics, and measurement equivalence of the SCQ forms (i.e., Lifetime form and Current form) using both theclassical true score theory and theItem Response Theory (IRT). While our findings indicate sufficient psychometric properties of the SCQ Lifetime form, measurement issues emerged with respect to the SCQ Current form. These issuesinclude lower internal consistencies, aweaker factor structure, lower item discriminations, significant pseudo-guessing effects, and subscale-level measurement bias. Thus, we caution researchers and clinicians about the use of the SCQCurrent form. In particular, it seemsinappropriate to use the Current form as an alternative to the Lifetime form among children younger than 5years old or under other special situations (e.g., teacher-report data), although such practices were advised by the publisherof the SCQ. Instead,we recommend modifying thewording of the Lifetime form items rather than switching to the Current form where a 3-month timeframe is specified for responding to SCQ items. Future studies may consider investigating the association between the temporality of certain behaviors and the individual's potential for being diagnosed with ASD, as well as theage neutrality of the SCQ. Springer Science+Business Media New York, 2014 Social Communication Questionnaire (SCQ) nationallicence Current form nationallicence Lifetime form nationallicence Autism spectrum disorder (ASD) nationallicence Item response theory (IRT) nationallicence Measurement equivalence nationallicence Wei Tianlan Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut Chesnut Steven Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut Barnard-Brak Lucy Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut Richman David Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut Journal of Psychopathology and Behavioral Assessment Springer US; http://www.springer-ny.com 37/3(2015-09-01), 469-480 0882-2689 37:3<469 2015 37 10862 https://doi.org/10.1007/s10862-014-9468-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10862-014-9468-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wei Tianlan Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut NATIONALLICENCE 700 1- Chesnut Steven Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut NATIONALLICENCE 700 1- Barnard-Brak Lucy Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut NATIONALLICENCE 700 1- Richman David Department of Educational Psychology and Leadership, Texas Tech University, 79409, Lubbock, TX, USA aut NATIONALLICENCE 773 0- Journal of Psychopathology and Behavioral Assessment Springer US; http://www.springer-ny.com 37/3(2015-09-01), 469-480 0882-2689 37:3<469 2015 37 10862