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NCA  

Necessary Condition Analysis
View on CRAN: Click here


Download and install NCA package within the R console
Install from CRAN:
install.packages("NCA")

Install from Github:
library("remotes")
install_github("cran/NCA")

Install by package version:
library("remotes")
install_version("NCA", "4.0.2")



Attach the package and use:
library("NCA")
Maintained by
Govert Buijs
[Scholar Profile | Author Map]
First Published: 2015-07-02
Latest Update: 2024-02-23
Description:
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) . 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: or .
How to cite:
Govert Buijs (2015). NCA: Necessary Condition Analysis. R package version 4.0.2, https://cran.r-project.org/web/packages/NCA. Accessed 03 May. 2025.
Previous versions and publish date:
1.0 (2015-07-02 13:42), 1.1 (2015-10-10 22:52), 2.0 (2016-05-18 17:29), 3.0.1 (2018-08-21 21:10), 3.0.2 (2019-11-22 18:10), 3.0.3 (2020-06-11 11:10), 3.0 (2018-08-01 11:30), 3.1.0 (2021-03-02 21:50), 3.1.1 (2021-05-03 09:50), 3.2.0 (2022-04-05 15:52), 3.2.1 (2022-09-15 11:10), 3.3.0 (2023-02-06 14:32), 3.3.1 (2023-02-10 10:40), 3.3.2 (2023-06-27 12:30), 3.3.3 (2023-09-05 11:30), 4.0.0 (2024-02-16 15:00), 4.0.1 (2024-02-23 10:30)
Other packages that cited NCA R package
View NCA citation profile
Other R packages that NCA depends, imports, suggests or enhances
Complete documentation for NCA
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