psych
type: Item
swMATH work ID: 4549
instance of: R package
software version identifier: 2.3.3
software version identifier: 1.0-17
software version identifier: 1.0-18
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software version identifier: 2.0.7
software version identifier: 2.0.8

psych (software version identifier)
software version identifier: 2.0.9
publication date: 2020-10-05T00:00:00Z

psych (software version identifier)
software version identifier: 2.0.12
publication date: 2020-12-16T00:00:00Z

psych (software version identifier)
software version identifier: 2.1.3
publication date: 2021-03-27T00:00:00Z

psych (software version identifier)
software version identifier: 2.1.6
publication date: 2021-06-18T00:00:00Z

psych (software version identifier)
software version identifier: 2.1.9
publication date: 2021-09-22T00:00:00Z

psych (software version identifier)
software version identifier: 2.2.3
publication date: 2022-03-19T00:00:00Z

psych (software version identifier)
software version identifier: 2.2.5
publication date: 2022-05-10T00:00:00Z

psych (software version identifier)
software version identifier: 2.2.9
publication date: 2022-09-29T00:00:00Z

psych (software version identifier)
software version identifier: 2.3.6
publication date: 2023-06-21T00:00:00Z

psych (software version identifier)
software version identifier: 2.3.9
publication date: 2023-09-26T00:00:00Z

psych (software version identifier)
software version identifier: 2.3.12
publication date: 2023-12-20T00:00:00Z

psych (software version identifier)
software version identifier: 2.4.1
publication date: 2024-01-18T00:00:00Z

psych (maintained by)
maintained by: William Revelle

psych (CRAN project)
CRAN project: psych

psych (programmed in)
programmed in: R

psych (last update)
last update: 2024-01-18T00:00:00Z

psych (description)
description: A general purpose toolbox developed originally for personality, psychometric theory and experimental psychology. Functions are primarily for multivariate analysis and scale construction using factor analysis, principal component analysis, cluster analysis and reliability analysis, although others provide basic descriptive statistics. Item Response Theory is done using factor analysis of tetrachoric and polychoric correlations. Functions for analyzing data at multiple levels include within and between group statistics, including correlations and factor analysis. Validation and cross validation of scales developed using basic machine learning algorithms are provided, as are functions for simulating and testing particular item and test structures. Several functions serve as a useful front end for structural equation modeling. Graphical displays of path diagrams, including mediation models, factor analysis and structural equation models are created using basic graphics. Some of the functions are written to support a book on psychometric theory as well as publications in personality research. For more information, see the <https://personality-project.org/r/> web page.

psych (author)
author: William Revelle

psych (copyright license)
copyright license: GNU General Public License, version 2.0

psych (copyright license)
copyright license: GNU General Public License, version 3.0
edition/version: expanded from: GPL (≥ 2)

psych (imports)
imports: mnormt

psych (imports)
imports: parallel

psych (imports)
imports: stats

psych (imports)
imports: graphics

psych (imports)
imports: grDevices

psych (imports)
imports: methods

psych (imports)
imports: lattice

psych (imports)
imports: nlme

psych (MaRDI profile type)
MaRDI profile type: Software

psych (source code repository)
source code repository: psych

psych (Software Heritage ID)
source code repository: psych
point in time: 2024-01-27T00:00:00Z