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Therefore, IQ scores require evaluation of reliability and dimensionality to establish psychometric utility. Using WISC-V scores, the tutorial demonstrates multidimensionality, with only Full-Scale IQ showing sufficient reliability for clinical use. Software tools are provided to support this assessment.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/assessing-the-psychometric-utility-of-iq-scores-a-tutorial-using-the-wechsler-intelligence-scale-for-childrenfifth-edition/563281/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/assessing-the-psychometric-utility-of-iq-scores-a-tutorial-using-the-wechsler-intelligence-scale-for-childrenfifth-edition/563281.png","ImageObject",442,249,{"name":88,"@type":89},"Logic","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-27","2026-10-12",true,{"@type":98,"interactionType":99,"userInteractionCount":73},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"Why must IQ scores be evaluated for psychometric utility?","Question",{"text":108,"@type":109},"Because valid interpretation requires each score to reflect its intended construct precisely and to provide unique information independent of other constructs. Reliability and dimensionality determine whether the scores are psychometrically useful.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What did the tutorial show about WISC-V scores for clinical use?",{"text":113,"@type":109},"The WISC-V was found to be multidimensional, but only the Full-Scale IQ (FSIQ) was sufficiently reliable for clinical use. The group factors were not well defined and index scores were contaminated by variance from other constructs.",{"name":115,"@type":106,"acceptedAnswer":116},"How does the article recommend clinicians use IQ test results beyond model fit?",{"text":117,"@type":109},"Clinicians are encouraged to assess reliability and the ability to provide information not available from general ability scores, including predictive and treatment validity. The approach is supported with provided software tools.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},563281,1793131804,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":73,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":25,"language":135,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":136,"faqs":137,"seo_title":138,"seo_description":61,"update_tm":139,"read_time":47},1099513958762,"https://ap-avatar.wpscdn.com/avatar/1000023916a998db790?x-image-process=image/resize,m_fixed,w_180,h_180&k=1784791008015729253","School PSychology Review 2022, vol. 51, No. 5, 619–633  \n[https://doi.org/10.1080/2372966X.2020.1816804](https://doi.org/10.1080/2372966X.2020.1816804)  \nRESEARCH INTO PRACTICE  \nAssessing the Psychometric Utility of IQ Scores: A Tutorial Using the Wechsler Intelligence Scale for Children–Fifth Edition  \nMarley W. Watkinsa  and Gary L. Canivezb aBaylor University; beastern illinois University  \nABSTRACT  \nIQ tests provide numerous scores, but valid interpretation of those scores is dependent on how precisely each score reflects its intended construct and whether it provides unique information independent of other constructs. Thus, IQ scores must be evaluated for their reliability and dimensionality to determine their psychometric utility. As a tutorial, the Wechsler Intelligence Scale for Children–Fifth Edition (WISC-V) scores were evaluated and it was demonstrated that the WISC-V is multidimensional, but only the Full-Scale IQ (FSIQ) was found to be sufficiently reliable for clinical use. WISC-V group factors were not well defined and WISC-V index (i.e., factor) scores were contaminated with variance from other constructs and insufficiently reliable for clinical decisions. Clinicians were encouraged to go beyond structural goodness of fit and evaluate IQ test scores in terms of their reliability and ability to provide information that is not available from the general ability score as well their predictive and treatment validity. Software was provided to assist in that evaluation.  \nIMPACT STATEMENT  \nIQ tests provide numerous scores, but valid interpretation of those scores is dependent on how precisely each score reflects its intended construct and whether it provides unique information independent of other constructs. Thus, IQ scores must be evaluated for their reliability and dimensionality to determine their psychometric utility. This article describes an evidence-based approach that clinicians can employ to assess the psychometric utility of IQ scores, supplies software tools to assist in that analysis, and provides a tutorial example using Wechsler Intelligence Scale for Children–Fifth Edition (WISC-V) scores.  \nARTICLE HISTORY  \nReceived June 10, 2020 Accepted August 20, 2020  \nKEYWORDS  \nintelligence, WISC-V, children, assessment, evidence-based  \nASSOCIATE EDITOR  \nShane Jimerson  \nThe Wechsler Intelligence Scale for Children–Fifth Edition (WISC-V; Wechsler, 2014a) is one of the most frequently used tests by school psychologists (Benson et al., 2019; Groth-Marnat & Wright, 2016; L. T. Miller et al., 2020) . However, the WISC-V can produce 35 separate scores (Carlson et al., 2016; Wechsler, 2014b) . Even with its abbreviated primary battery, the WISC-V generates one global score, five primary index scores, and 10 subtest scores. Psychologists must decide which, if any, of these 16 scores to interpret.  \nValidity  \nInterpretation ofWISC-V scores can only be justified with validity evidence (American Educational Research Association [AERA] et al., 2014). Several types of evidence must be integrated when evaluating the validity of test scores, most often, evidence about test content (content  \nvalidity), internal structure (structural or factorial validity), and relationships to other variables (external validity) . Following this template, Wechsler (2014b) provided content, structural, and external validity evidence in the WISC-V technical manual.  \nEvidence regarding the internal structure of a test is vital because that internal structure serves as the statistical rationale for the test’s scoring structure (Braden, 2013; Braden & Niebling, 2012; Canivez & Youngstrom, 2019; Furr, 2011) . Evidence of structural validity is often obtained through factor analysis, which is a multivariate statistical technique that utilizes the variability among a set of scores to identify the underlying latent constructs or factors that theoretically caused that observed variability (Montgomery et al., 2018) .  \nFactor analysis was first","cbCaitcqSo0mDfWg","https://ap.wps.com/l/cbCaitcqSo0mDfWg","pdf",1937047,"English","# Abstract\n# Impact Statement\n# Article History\n# Keywords\n# Validity\n## Content validity\n## Structural (factorial) validity\n## External validity\n# Factor Analysis and Dimensionality\n# Questions About Validity and Multidimensionality","[{\"question\":\"Why must IQ scores be evaluated for psychometric utility?\",\"answer\":\"Because valid interpretation requires each score to reflect its intended construct precisely and to provide unique information independent of other constructs. Reliability and dimensionality determine whether the scores are psychometrically useful.\"},{\"question\":\"What did the tutorial show about WISC-V scores for clinical use?\",\"answer\":\"The WISC-V was found to be multidimensional, but only the Full-Scale IQ (FSIQ) was sufficiently reliable for clinical use. The group factors were not well defined and index scores were contaminated by variance from other constructs.\"},{\"question\":\"How does the article recommend clinicians use IQ test results beyond model fit?\",\"answer\":\"Clinicians are encouraged to assess reliability and the ability to provide information not available from general ability scores, including predictive and treatment validity. The approach is supported with provided software tools.\"}]","Assessing the Psychometric Utility of IQ Scores - A Tutorial Using the Wechsler Intelligence Scale for Children–Fifth Edition | PDF",1791826095]