Academic Journals Database
Disseminating quality controlled scientific knowledge

A note on the analysis of difference patterns - structural zeros by design

ADD TO MY LIST
 
Author(s): ALEXANDER VON EYE | EUN YOUNG MUN

Journal: Psychology Science
ISSN 1614-9947

Volume: 49;
Issue: 1;
Start page: 14;
Date: 2007;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: series of measures | method of differences | signs of differences | structural zeros | log-linear modeling | Configural Frequency Analysis

ABSTRACT
The method of finite differences is popular in the analysis of series of measures, because it allows one to analyze the shape of the curve that describes the series, and changes in the shape. In addition, it allows one to relate these changes to covariates. In the analysis of categorical variables, researchers can cross the sign patterns of first, second, and higher differences. In this note, it is shown that crossing sign patterns from different levels results in contingency tables with systematically large numbers of structural zeros. In addition, a simple algorithm is proposed that allows one to identify impossible combinations of sign patterns. Examples are presented using empirical and random number-generated data that are analyzed using log-linear models and Configural Frequency Analysis.
Affiliate Program      Why do you need a reservation system?