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Self-Report Tests of Personality

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Self-report inventories are objective personality assessments that use multiple-choice items or numbered scales, typically ranging from 1 (strongly disagree) to 5 (strongly agree). They are often called Likert scales after Rensis Likert. These inventories are widely used due to their ease of administration and cost-effectiveness. One of the most prominent examples is the Minnesota Multiphasic Personality Inventory (MMPI), initially developed in the 1940s to assess abnormal personality traits.

Five-Factor Theory of Personality

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Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder

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The Development of the Five-Factor Schizoid Inventory.

Neil A Meyer¹, Katherine E Hein², Donald R Lynam³

¹McLean Hospital, Belmont, MA, USA.

|November 9, 2023

Summary

This study introduces the Five-Factor Schizoid Inventory (FFZI) to measure schizoid personality disorder (SZD PD) traits. The FFZI shows strong reliability and validity, supporting its use in research and clinical settings.

Keywords:

five-factor model of personality schizoid personality disorder

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Published on: November 21, 2013

Area of Science:

Psychology
Personality Disorders
Psychometrics

Background:

Schizoid personality disorder (SZD PD) traits require reliable measurement tools.
The Five-Factor Model (FFM) provides a robust framework for understanding personality.

Purpose of the Study:

To develop and validate the Five-Factor Schizoid Inventory (FFZI).
To assess the FFZI's reliability and validity in measuring SZD PD traits within the FFM framework.

Main Methods:

Study 1: Developed and validated the FFZI using self-report measures in undergraduate participants (n=496).
Study 2: Assessed FFZI reliability and validity in an online community sample (n=181) via MTurk.
Utilized internal consistency, convergent, and discriminant validity analyses.

Main Results:

The FFZI demonstrated excellent internal consistency and convergent validity with SZD PD measures.
Discriminant validity was established against other personality disorders and non-hypothesized IPIP-NEO facets.
Preliminary support for FFZI reliability and validity was found in an online sample.

Conclusions:

The FFZI is a psychometrically sound measure for assessing schizoid personality disorder traits.
Findings support the conceptualization of SZD PD as a maladaptive facet of introversion within the FFM.