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Validation of the holyoake codependency index.

Greg E Dear¹, Clare M Roberts

¹School of Psychology, Edith Cowan University, Western Australia. g.dear@ecu.edu.au

The Journal of Psychology

|August 16, 2005

Summary

The Holyoake Codependency Index (HCI) demonstrates reliable and valid measurement of codependent traits, supporting its use in clinical practice with families facing substance use issues.

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Area of Science:

Psychology
Clinical Psychology
Family Studies

Background:

The codependency model is frequently used in clinical practice, particularly with families affected by alcohol and other drug problems.
Empirical support for the codependency model is limited, partly due to a lack of psychometrically sound measurement instruments.
The Holyoake Codependency Index (HCI) is a self-report measure designed to assess codependent traits.

Purpose of the Study:

To confirm the internal structure of the Holyoake Codependency Index (HCI) across multiple studies.
To provide further evidence for the construct validity of the HCI.
To support the clinical utility of the HCI in assessing codependent traits.

Main Methods:

Confirmatory factor analysis was employed to examine the internal structure of the HCI.
Four separate studies were conducted to validate the instrument.
The HCI subscales were analyzed for associations with other psychological and demographic variables.

Main Results:

The internal structure of the HCI was consistently confirmed across the four studies.
The HCI demonstrated further evidence of construct validity through meaningful associations with other variables.
The measure showed adequate to high reliability in previous research and consistent internal structure here.

Conclusions:

The Holyoake Codependency Index (HCI) is a psychometrically sound instrument for measuring codependent traits.
The findings support the use of the HCI in clinical settings for families with substance use concerns.
The validated HCI can aid in more empirically grounded clinical practice regarding codependency.

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