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25 - Modeling the Individual

Bridging Nomothetic and Idiographic Levels of Analysis

from Part VI - Intensive Longitudinal Designs

Published online by Cambridge University Press:  23 March 2020

By
Peter C. M. Molenaar  and
Adriene M. Beltz
Edited by
Aidan G. C. Wright  and
Michael N. Hallquist
Aidan G. C. Wright
Affiliation:
University of Pittsburgh
Michael N. Hallquist
Affiliation:
Pennsylvania State University
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Summary

The necessity of using subject-specific data analysis of nonergodic psychological processes is explained while emphasizing the difference between interindividual and intraindividual variation. The chapter argues that subject-specific data analysis not only matches the principles underlying developmental systems theory, which is relevant to obtaining a comprehensive understanding of change in human psychopathology, but also enables testing of all principles of person-oriented theory, which is fundamental to the formation and implementation of individualized treatments. A new generalized perspective on measurement equivalence in subject-specific data analysis is introduced. The importance of adaptive optimal control of psychological processes within the context of subject-specific data analysis is emphasized. In addition, some broader aims of subject-specific data analysis are considered, including principled ways to bridge the nomothetic and idiographic levels of analysis.

Keywords

ergodicityintra- and interindividual variationprinciples of person-oriented theorymeasurement equivalenceoptimal control
Type
Chapter
Information
The Cambridge Handbook of Research Methods in Clinical Psychology , pp. 327 - 336
Publisher: Cambridge University Press
Print publication year: 2020

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References

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