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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 "NCA" in publications use:'
type: software
license: GPL-3.0-or-later
title: 'NCA: Necessary Condition Analysis'
version: 4.0.2
doi: 10.32614/CRAN.package.NCA
abstract: 'Performs a Necessary Condition Analysis (NCA). (Dul, J. 2016. Necessary
  Condition Analysis (NCA). ''''Logic and Methodology of ''Necessary but not Sufficient''
  causality." Organizational Research Methods 19(1), 10-52) <https://doi.org/10.1177/1094428115584005>.
  NCA identifies necessary (but not sufficient) conditions in datasets, where x causes
  (e.g. precedes) y. Instead of drawing a regression line ''''through the middle of
  the data'''' in an xy-plot, NCA draws the ceiling line. The ceiling line y = f(x)
  separates the area with observations from the area without observations. (Nearly)
  all observations are below the ceiling line: y <= f(x). The empty zone is in the
  upper left hand corner of the xy-plot (with the convention that the x-axis is ''''horizontal''''
  and the y-axis is ''''vertical'''' and that values increase ''''upwards'''' and
  ''''to the right''''). The ceiling line is a (piecewise) linear non-decreasing line:
  a linear step function or a straight line. It indicates which level of x (e.g. an
  effort or input) is necessary but not sufficient for a (desired) level of y (e.g.
  good performance or output). A quick start guide for using this package can be found
  here: <https://repub.eur.nl/pub/78323/> or <https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2624981>.'
authors:
- family-names: Dul
  given-names: Jan
  email: jdul@rsm.nl
- family-names: Buijs
  given-names: Govert
  email: buijs@rsm.nl
repository: https://CRAN.R-project.org/package=NCA
url: https://www.erim.eur.nl/necessary-condition-analysis/
date-released: '2024-11-08'
contact:
- family-names: Buijs
  given-names: Govert
  email: buijs@rsm.nl