Package: ResponseScan
Type: Package
Title: Quick Screening of Response Patterns in Test and Survey Items
Version: 0.4.1
Authors@R: person("Jose", "Ventura-Leon",
                   email = "jventuraleon@gmail.com",
                   role = c("aut", "cre"),
                   comment = c(ORCID = "0000-0003-2996-4244"))
Description: One call screens the item responses of a test or
        questionnaire for patterns that deserve a closer look before
        modelling: flat or long-string responding, low intra-individual
        variability, multivariate outliers, incoherent psychometric
        synonyms or even-odd halves, overuse of the midpoint or of the
        extremes, duplicated response vectors and identical patterns
        that arrive in series of consecutive submissions. Indices
        follow Curran (2016) <doi:10.1016/j.jesp.2015.07.006>; person
        fit in item response theory (the standardized log-likelihood)
        is optional, and cut-offs can be taken from a reference group.
        Results are returned per person, with flags, frequency tables
        of response patterns and plots. Whole batches of data (a second
        collection phase, one classroom) can be compared with a
        reference group: the item correlation structure, with
        permutation tests that leave out flat responders and match the
        response level, and the Jennrich (1970)
        <doi:10.1080/01621459.1970.10481133> test; the similarity of
        consecutive rows; and near-duplicate respondents. Flagged
        respondents can be removed in one step and the same
        confirmatory or exploratory factor model can be refitted with
        and without them.
License: GPL (>= 3)
Encoding: UTF-8
RoxygenNote: 7.3.2
Depends: R (>= 4.1)
Imports: ggplot2 (>= 3.4.0), stats, utils
Suggests: lavaan, mirt, testthat (>= 3.0.0)
LazyData: true
Config/testthat/edition: 3
NeedsCompilation: no
Packaged: 2026-11-08 20:44:23 UTC; root
Author: Jose Ventura-Leon [aut, cre] (ORCID:
        <https://orcid.org/0000-0003-2996-4244>)
Maintainer: Jose Ventura-Leon <jventuraleon@gmail.com>
Repository: https://cran.r-universe.dev
Date/Publication: 2026-11-08 19:50:40 UTC
RemoteUrl: https://github.com/cran/ResponseScan
RemoteRef: HEAD
RemoteSha: 2fb4cb6b8d3ce217afd195326b5cce0d1eb57777