# ------------------------------------------------ # CITATION.cff file created with {cffr} R package # See also: https://docs.ropensci.org/cffr/ # ------------------------------------------------ cff-version: 1.2.0 message: 'To cite package "solomonR" in publications use:' type: software license: GPL-3.0-only title: 'solomonR: Analyze Solomon Four-Group Designs' version: 0.8.2 identifiers: - type: doi value: 10.32614/CRAN.package.solomonR - type: url value: https://juhalt.r-universe.dev/solomonR abstract: Tools for planning, analyzing, teaching, and reporting Solomon four-group experiments, introduced by Solomon (1949) . The historical analyses are reproduced and labeled as such, from Solomon's improvement scores to the Tests A-I sequence of Walton Braver and Braver (1988) and its published revisions. Contemporary analyses include one generalized linear model for all the groups, of four-group designs and of designs with several treatments, with robust or cluster-robust standard errors, for continuous, binary, and count outcomes; randomization inference; full-information maximum likelihood, following van Engelenburg (1999) ; observed- and latent-variable structural equation models with 'lavaan'; and equivalence tests of pretest sensitization. Also includes design checks, power and sample-size planning, simulated teaching data, published data sets, and reports in the style of the American Psychological Association, with method-specific references. authors: - family-names: Uhalt given-names: Joshua email: Josh.Uhalt@gmail.com preferred-citation: type: manual title: 'solomonR: Analyze Solomon Four-Group Designs' authors: - family-names: Uhalt given-names: Joshua email: Josh.Uhalt@gmail.com year: '2026' notes: R package version 0.8.2 url: https://juhalt.github.io/solomonR/ repository: https://juhalt.r-universe.dev repository-code: https://github.com/JUhalt/solomonR commit: 17b1632a9e607dc6e2f3cf053bf599b4780c5759 url: https://juhalt.github.io/solomonR/ date-released: '2026-10-09' contact: - family-names: Uhalt given-names: Joshua email: Josh.Uhalt@gmail.com