Package: subscore
Title: Computing Subscores in Classical Test Theory and Item Response
        Theory
Version: 3.3
Authors@R: c(person("Shenghai", "Dai", role = c("aut", "cre"), 
                     email = "s.dai@wsu.edu"),
             person("Xiaolin", "Wang", role = "aut"),
             person("Dubravka", "Svetina", role = "aut"))
Author: Shenghai Dai [aut, cre], Xiaolin Wang [aut], Dubravka Svetina
        [aut]
Maintainer: Shenghai Dai <s.dai@wsu.edu>
Description: Functions for computing test subscores using different
        methods in both classical test theory (CTT) and item response
        theory (IRT). This package enables three types of subscoring
        methods within the framework of CTT and IRT, including (1)
        Wainer's augmentation method (Wainer et. al., 2001)
        <doi:10.4324/9781410604729>, (2) Haberman's subscoring methods
        (Haberman, 2008) <doi:10.3102/1076998607302636>, and (3) Yen's
        objective performance index (OPI; Yen, 1987)
        <https://www.ets.org/research/policy_research_reports/publications/paper/1987/hrap>.
        It also includes functions to compute Proportional Reduction of
        Mean Squared Errors (PRMSEs) in Haberman's methods which are
        used to examine whether test subscores are of added value. In
        addition, the package includes a function to assess the local
        independence assumption of IRT with Yen's Q3 statistic (Yen,
        1984 <doi:10.1177/014662168400800201>; Yen, 1993
        <doi:10.1111/j.1745-3984.1993.tb00423.x>).
Depends: R (>= 3.4.0), CTT, stats, irtoys, sirt, ltm
Imports: cocor, boot
NeedsCompilation: no
LazyData: true
Encoding: UTF-8
License: GPL (>= 2)
RoxygenNote: 7.2.0
Packaged: 2026-06-17 07:51:50 UTC; root
Repository: https://daiscode.r-universe.dev
Date/Publication: 2022-05-24 10:00:07 UTC
RemoteUrl: https://github.com/cran/subscore
RemoteRef: HEAD
RemoteSha: e84c61801a0c7d54910aebc866d510b9d911b374