Ontology highlight
ABSTRACT:
SUBMITTER: Davis-Stober CP
PROVIDER: S-EPMC4664651 | biostudies-literature | 2015
REPOSITORIES: biostudies-literature
Frontiers in psychology 20151201
We consider the covariance matrix for dichotomous Guttman items under a set of uniformity conditions, and obtain closed-form expressions for the eigenvalues and eigenvectors of the matrix. In particular, we describe the eigenvalues and eigenvectors of the matrix in terms of trigonometric functions of the number of items. Our results parallel those of Zwick (1987) for the correlation matrix under the same uniformity conditions. We provide an explanation for certain properties of principal compone ...[more]