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  <dc:title>Classical Test Theory Functions</dc:title>
  <dc:title>R package CTT version 2.3.4</dc:title>
  <dc:subject>CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics)</dc:subject>
  <dc:description>A collection of common test and item analyses from a classical test theory (CTT) framework. Analyses can be applied to both dichotomous and polytomous data. Functions provide reliability analyses (alpha), item statistics, disctractor analyses, disattenuated correlations, scoring routines, and empirical ICCs.</dc:description>
  <dc:type>Software</dc:type>
  <dc:creator>John T. Willse &lt;measurementjohn@gmail.com&gt;</dc:creator>
  <dc:publisher>Comprehensive R Archive Network (CRAN)</dc:publisher>
  <dc:contributor>John T. Willse [aut, cre]</dc:contributor>
  <dc:rights>GPL (&gt;= 2)</dc:rights>
  <dc:date>2026-02-10</dc:date>
  <dc:format>application/tgz</dc:format>
  <dc:identifier>https://CRAN.R-project.org/package=CTT</dc:identifier>
  <dc:identifier>doi:10.32614/CRAN.package.CTT</dc:identifier>
</oai_dc:dc>