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# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "normref" in publications use:'
type: software
license: GPL-3.0-or-later
title: 'normref: Continuous Norming'
version: 0.1.1
doi: 10.32614/CRAN.package.normref
abstract: A toolbox for continuous norming of psychological and educational tests,
  supporting regression-based norming where norms can vary as a continuous function
  of age or another norm predictor. Norms are estimated using Generalized Additive
  Models for Location, Scale, and Shape (GAMLSS), enabling flexible modelling of the
  full score distribution in a normative sample. The package supports applications
  in psychometrics and psychological testing, and includes functions for model selection,
  reliability estimation, norm calculation, including confidence intervals, and sample
  size planning. For more details, see Timmerman et al. (2021) <https://doi.org/10.1037/met0000348>.
authors:
- family-names: Vries
  given-names: Klazien
  name-particle: de
  email: klazien.de.vries@rug.nl
  orcid: https://orcid.org/0009-0007-9302-1562
- family-names: Heister
  given-names: Hannah
  email: h.m.heister@rug.nl
  orcid: https://orcid.org/0009-0001-1512-5549
- family-names: Urban
  given-names: Julian
  email: Julian.Urban@gesis.org
  orcid: https://orcid.org/0000-0001-8886-4724
- family-names: Timmerman
  given-names: Marieke
  email: m.e.timmerman@rug.nl
  orcid: https://orcid.org/0000-0003-3480-5918
repository: https://metimmerman.r-universe.dev
commit: 300b9f4cafb5c64e952b73b820f82ec48193baf8
date-released: '2026-04-10'
contact:
- family-names: Timmerman
  given-names: Marieke
  email: m.e.timmerman@rug.nl
  orcid: https://orcid.org/0000-0003-3480-5918