Chaos (nonlinear) analysis of the Kelly rep grid

Rue L. Cromwell *, Jennifer A. Snyder **, Kenneth W. Sewell ***, Charyle Langelle ****

* University of Kansas, ** University of North Carolina, *** University of North Texas, **** Rushmore, Minnesota (USA)

Abstract
Chaos theory (nonlinear dynamic systems analysis) was explored in single rep grids. Of par-ticular interest was the rep matrix input by constructs (row by row) vs. elements (column by column). In the protocol of a psychologically healthy individual the input by constructs tended toward a periodic or pseudoperiodic attractor, whereas the input of the same grid by elements was more chaotic (complex). Beyond procedural determinants, this observation may mean that this person, as Kelly proposed, organizes information by generating constructs to apply to various people. This observation is examined against an earlier hypothesis that peo-ple with dissociative identity disorder (DID) may organize information by grouping people more than by elaborating constructs about people. Comparing these chaos (nonlinear) analy-ses with IRCLAS (hierarchical clustering) analyses, we think these analytic methods might be useful ways for formal Kelly rep grid investigations.

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