psy {psy}

Various procedures used in psychometry

Description

Kappa, Intra class correlation coefficient, Cronbach alpha, Scree plot, Multitraits multimethods, Spherical representation of a correlation matrix

Details

Package:	psy
Type:	Package
Version:	1.0
Date:	2009-12-23
License:	free
LazyLoad:	yes

Author(s)

Bruno Falissard <[e-mail]>

References

Falissard B, A spherical representation of a correlation matrix, Journal of Classification (1996), 13:2, 267-280.
Horn, JL (1965) A Rationale and Test for the Number of Factors in Factor Analysis, Psychometrika, 30, 179-185.
Mammals: Ecological and Constitutional Correlates, by Allison, T. and Cicchetti, D. (1976) Science, November 12, vol. 194, pp.732-734
Jouvent, R et al 1988 La clinique polydimensionnelle de humeur depressive. Nouvelle version echelle EHD : Polydimensional rating scale of depressive mood. Psychiatrie et Psychobiologie.

Examples

data(sleep)
sphpca(sleep[,c(2:5,7:11)])
data(expsy)
scree.plot(expsy[,1:10],simu=20,use="P")
data(ehd)
par(mfrow=c(1,5))
mtmm(ehd,list(c("e15","e18","e19","e20"),c("e4","e5","e6","e14","e17"),c("e11","e13","e16")
,c("e1","e10","e12"),c("e2","e3","e7","e8","e9")))