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Applying an eMASS Customization Program as a Research Tool to Evaluate Consumer Benefits

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Published on: September 27, 2019

Development and validation of the revised Identity Style Inventory (ISI-5): factor structure, reliability, and

Michael D Berzonsky¹, Bart Soenens, Koen Luyckx

¹Department of Psychology.

Psychological Assessment

|May 8, 2013

Summary

This summary is machine-generated.

Researchers developed and validated the Identity Style Inventory-Version 5 (ISI-5) to measure how individuals process identity information. This new tool offers reliable assessment of informational, normative, and diffuse-avoidant identity styles.

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Last Updated: May 11, 2026

Applying an eMASS Customization Program as a Research Tool to Evaluate Consumer Benefits

Applying an eMASS Customization Program as a Research Tool to Evaluate Consumer Benefits

Published on: September 27, 2019

Area of Science:

Psychology
Developmental Psychology
Social Psychology

Background:

Identity processing styles describe how individuals manage identity construction and maintenance.
The Identity Style Inventory-Version 3 (ISI-3) has been the standard measure in empirical research.
A need existed for a revised and validated instrument to assess identity processing styles.

Purpose of the Study:

To develop and validate a new, revised measure of identity processing style: the Identity Style Inventory-Version 5 (ISI-5).
To ensure the new measure (ISI-5) demonstrates robust psychometric properties and theoretical alignment.

Main Methods:

Generated an initial pool of 39 items focusing on processing identity-relevant information.
Utilized Exploratory Factor Analysis to identify three distinct style scales: Informational, Normative, and Diffuse-avoidant.
Employed Confirmatory Factor Analysis on an independent sample to validate the 3-factor structure of the ISI-5.
Conducted five studies to assess psychometric properties, including reliability, internal consistency, and convergent/discriminant validity.

Main Results:

The Exploratory Factor Analysis identified three scales: Informational (9 items), Normative (9 items), and Diffuse-avoidant (9 items).
Confirmatory Factor Analysis supported the 3-factor structure of the ISI-5.
The ISI-5 scales demonstrated good test-retest reliability and internal consistency.
Correlations with measures of identity status, content, commitment, and processing styles supported the convergent and discriminant validity of the ISI-5.

Conclusions:

The Identity Style Inventory-Version 5 (ISI-5) is a psychometrically sound instrument for assessing individual differences in identity processing styles.
The ISI-5 provides a reliable and valid tool for researchers investigating identity development and related psychological constructs.
Future research should explore the applications and further refine the understanding of identity processing styles using the ISI-5.