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The responses of 1141 preservice teachers were scored in three ways: polytomously with the original 4\u2010point Likert scale, dichotomously as true\u2010false, and dichotomously as though the options were multiple choice. An exploratory factor analysis suggested at least one\u2010third of the items needed to be removed. Confirmatory factor analyses suggested a one\u2010factor model with polytomous scoring had the best fit to the data, but only six items loaded. All models demonstrated unacceptable internal consistency reliability (&lt;0.70). Because no technically adequate version of the measure was identified, questions remain about basing policy on scores from these instruments. However, the findings indicated ways this type of measure might be improved.<\/jats:p>","DOI":"10.1002\/dys.1765","type":"journal-article","created":{"date-parts":[[2024,3,18]],"date-time":"2024-03-18T10:18:37Z","timestamp":1710757117000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Technical adequacy of measuring teachers' knowledge of dyslexia"],"prefix":"10.1002","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0874-1412","authenticated-orcid":false,"given":"Deborah K.","family":"Reed","sequence":"first","affiliation":[{"name":"Tennessee Reading Research Center University of Tennessee  Knoxville Tennessee USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6066-0356","authenticated-orcid":false,"given":"Huibin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Tennessee Reading Research Center University of Tennessee  Knoxville Tennessee USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,3,18]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1037\/0033-2909.103.3.411"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11145-009-9166-x"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/ldrp.12136"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/phn.12156"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/dys.1748"},{"key":"e_1_2_8_7_1","first-page":"127","article-title":"Developing criteria for establishing interrater reliability of specific items: Applications to assessment of adaptive behavior","volume":"86","author":"Cicchetti D. 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