Using Linear Mixed Models with Repertory Grid Data

Abstract

Index measures for repertory grid data are a frequently used approach to summarize characteristics of a grid. We can differentiate between measures at the grid level that describe global features of the grid, like e.g. a construct system's complexity, and local measures at the construct level, such as, e.g., the intensity of a construct. Global measures across different grids represent independent data points and can be compared using standard statistical methods. Measures on the construct level, however, are not independent from each other, as they stem from the same single individual. A linear mixed model is a technique that allows the combination of dependent data points at the local and ..