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CTT

Classical Test Theory Functions

v2.3.4 · Feb 9, 2026 · GPL (>= 2)

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.

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CRAN Check Status

14 OK
Show all 14 flavors
Flavor Status
r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK

Check History

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Reverse Dependencies (7)

Dependency Network

Dependencies Reverse dependencies CTTinShiny subscore CTTShiny CTTvis IRTShiny measureR sphereML CTT

Version History

new 2.3.4 Mar 10, 2026
updated 2.3.4 ← 2.3.3 diff Feb 9, 2026
updated 2.3.3 ← 2.3.2 diff Sep 11, 2018
updated 2.3.2 ← 2.3 diff Feb 3, 2018
updated 2.3 ← 2.1 diff Nov 3, 2017
updated 2.1 ← 2.0 diff Feb 24, 2014
updated 2.0 ← 1.0 diff Jan 24, 2014
new 1.0 Sep 2, 2008