structure.list

phi.list

When creating a structural diagram or a structural model, it is convenient to not have to specify all of the zero loadings in a structural matrix. structure.list converts list input into a design matrix. phi.list does the same for a correlation matrix. Factors with NULL values are filled with 0s.

multivariate

models

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.

William Revelle

psych

Procedures for Psychological, Psychometric, and Personality
Research

structure.list function

<dl> <dt>nvars</dt>
<dd>Number of variables in the design matrix</dd> <dt>f.list</dt>
<dd>A list of items included in each factor (for structure.list, or the factors that correlate with the specified factor for phi.list</dd> <dt>f</dt>
<dd>prefix for parameters -- needed in case of creating an X set and a Y set</dd> <dt>f.labels</dt>
<dd>Names for the factors</dd> <dt>item.labels</dt>
<dd>Item labels</dd> 
 <dt>nf</dt>
<dd>Number of factors in the phi matrix</dd></dl>

Arguments

Create factor model matrices from an input list — structure.list

<dl>

 <dt>nvars</dt>
<dd>Number of variables in the design matrix</dd>

 <dt>f.list</dt>
<dd>A list of items included in each factor (for structure.list, or the factors that correlate with the specified factor for phi.list</dd>

 <dt>f</dt>
<dd>prefix for parameters -- needed in case of creating an X set and a Y set</dd>

 <dt>f.labels</dt>
<dd>Names for the factors</dd>

 <dt>item.labels</dt>
<dd>Item labels</dd>

 
 <dt>nf</dt>
<dd>Number of factors in the phi matrix</dd>

</dl>

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structure.list: Create factor model matrices from an input list

Description

Usage

Value

Arguments

Details

See Also

Examples