icc.de.mat {iccde}

Computation of Double-Entry Intraclass Correlations for correlation matrices

Description

This function computes pairwise double-entry intraclass correlations among all entries of a data frame. Correlations between the compared variables as well as correlations of the constructs with themselves are thereby excluded from the calculation (i.e., correlations between X and Y, correlation between X and X, and correlation between Y and Y).

Usage

icc.de.mat(data, digit)

Arguments

data

A data frame with participants in rows and variables in columns.

digit

Number of digits in the output. The default is 3.

Value

iccde

Double-Entry Intraclass Correlation

Author(s)

Christian Blötner, Michael Paul Grosz [e-mail]

References

Furr, R. M. (2010). The Double-Entry Intraclass Correlation as an Index of Profile Similarity: Meaning, Limitations, and Alternatives. Journal of Personality Assessment, 92(1), 1–15. https://doi.org/10.1080/00223890903379134

McCrae, R. R. (2008). A Note on Some Measures of Profile Agreement. Journal of Personality Assessment, 90(2), 105–109. https://doi.org/10.1080/00223890701845104

Examples

df <- data.frame(a = rnorm(100), b = rnorm(100), c = rnorm(100),
                 x = rnorm(100), y = rnorm(100), z = rnorm(100))
icc.de.mat(df)