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Reliability of coordinate grid data.

James W Grice1, Mark Hopper

  • 1Department of Psychology, Oklahoma State University, 215 North Murray, Stillwater 74078-3064, USA. jgrice@okstate.edu

Psychological Reports
|February 15, 2003
PubMed
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This study found low reliability for the coordinate grid in measuring logical inconsistency and integrative complexity. Results suggest caution when generalizing findings from this psychological assessment tool.

Area of Science:

  • Psychology
  • Cognitive Science
  • Social Psychology

Background:

  • The repertory grid technique is used to explore personal constructs.
  • The coordinate grid, a modified repertory grid, assesses logical inconsistency and integrative complexity.
  • Understanding the reliability of psychological assessment tools is crucial for valid interpretation.

Purpose of the Study:

  • To evaluate the reliability of data generated by a modified repertory grid procedure (coordinate grid).
  • To assess the consistency of measures for logical inconsistency and integrative complexity across different administrations and within the grid.
  • To determine if findings from the coordinate grid can be reliably generalized.

Main Methods:

  • 56 college students participated in the study.

Related Experiment Videos

  • Participants completed two forms of the coordinate grid on two separate occasions.
  • Reliability was assessed using correlation coefficients for test-retest and internal consistency.

    • Main Results:

    • Measures of logical inconsistency (r = -.04) and integrative complexity (r = .31) showed low internal consistency within the grid.
    • Test-retest reliability was better but still below acceptable levels (r = .51 for logical inconsistency; r = .35 for integrative complexity).
    • The coordinate grid demonstrated poor reliability for assessing individuals' views of others.

    Conclusions:

    • The coordinate grid procedure exhibits insufficient reliability for measuring logical inconsistency and integrative complexity.
    • Generalizing findings derived from a single administration of the coordinate grid may not be scientifically warranted.
    • Further research is needed to improve the psychometric properties of this assessment method.