Psychometric Properties of the MMPI-2-RF Somatic Complaints (RC1) Scale

Michael L. Thomas, Dona E Locke

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The MMPI-2 Restructured Form (MMPI-2-RF; Tellegen & Ben-Porath, 2008) was designed to be psychometrically superior to its MMPI-2 counterpart. However, the test has yet to be extensively evaluated in diverse clinical settings. The purpose of this study was to examine the psychometric properties of the MMPI-2-RF Somatic Complaints (RC1) scale in a clinically relevant population. Participants were 399 patients diagnosed with either epilepsy or psychogenic nonepileptic seizures on the basis of video-electroencephalograph monitoring. The internal structure of the MMPI-2-RF was evaluated using taxometric, confirmatory factor analysis, and item response theory procedures. Data from 4 content-specific scales directly related to RC1 (Malaise, Gastrointestinal Complaints, Head Pain Complaints, and Neurological Complaints) indicated that the latent construct of somatization is a dimensional variable with a bifactor structure. However, consistent with the scale's construction, a unidimensional model also provided adequate fit. A 2-parameter logistic item response theory model better accounted for observed item responses than did 1- or 3-parameter models. Results suggest that the RC1 scale is most precise for T score estimates between 55 and 90. Overall, the scale appears to be well suited for the assessment of somatization.

Original languageEnglish (US)
Pages (from-to)492-503
Number of pages12
JournalPsychological Assessment
Volume22
Issue number3
DOIs
StatePublished - Sep 2010

Fingerprint

MMPI
Psychometrics
Statistical Factor Analysis
Headache
Epilepsy
Seizures
Population

Keywords

  • Confirmatory factor analysis
  • Item response theory
  • Minnesota multiphasic personality inventory-2 restructured form
  • Psychogenic nonepileptic seizures
  • Taxometrics

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology

Cite this

Psychometric Properties of the MMPI-2-RF Somatic Complaints (RC1) Scale. / Thomas, Michael L.; Locke, Dona E.

In: Psychological Assessment, Vol. 22, No. 3, 09.2010, p. 492-503.

Research output: Contribution to journalArticle

@article{eda27a59be8e49baa189a5021b3cae05,
title = "Psychometric Properties of the MMPI-2-RF Somatic Complaints (RC1) Scale",
abstract = "The MMPI-2 Restructured Form (MMPI-2-RF; Tellegen & Ben-Porath, 2008) was designed to be psychometrically superior to its MMPI-2 counterpart. However, the test has yet to be extensively evaluated in diverse clinical settings. The purpose of this study was to examine the psychometric properties of the MMPI-2-RF Somatic Complaints (RC1) scale in a clinically relevant population. Participants were 399 patients diagnosed with either epilepsy or psychogenic nonepileptic seizures on the basis of video-electroencephalograph monitoring. The internal structure of the MMPI-2-RF was evaluated using taxometric, confirmatory factor analysis, and item response theory procedures. Data from 4 content-specific scales directly related to RC1 (Malaise, Gastrointestinal Complaints, Head Pain Complaints, and Neurological Complaints) indicated that the latent construct of somatization is a dimensional variable with a bifactor structure. However, consistent with the scale's construction, a unidimensional model also provided adequate fit. A 2-parameter logistic item response theory model better accounted for observed item responses than did 1- or 3-parameter models. Results suggest that the RC1 scale is most precise for T score estimates between 55 and 90. Overall, the scale appears to be well suited for the assessment of somatization.",
keywords = "Confirmatory factor analysis, Item response theory, Minnesota multiphasic personality inventory-2 restructured form, Psychogenic nonepileptic seizures, Taxometrics",
author = "Thomas, {Michael L.} and Locke, {Dona E}",
year = "2010",
month = "9",
doi = "10.1037/a0019229",
language = "English (US)",
volume = "22",
pages = "492--503",
journal = "Psychological Assessment",
issn = "1040-3590",
publisher = "American Psychological Association Inc.",
number = "3",

}

TY - JOUR

T1 - Psychometric Properties of the MMPI-2-RF Somatic Complaints (RC1) Scale

AU - Thomas, Michael L.

AU - Locke, Dona E

PY - 2010/9

Y1 - 2010/9

N2 - The MMPI-2 Restructured Form (MMPI-2-RF; Tellegen & Ben-Porath, 2008) was designed to be psychometrically superior to its MMPI-2 counterpart. However, the test has yet to be extensively evaluated in diverse clinical settings. The purpose of this study was to examine the psychometric properties of the MMPI-2-RF Somatic Complaints (RC1) scale in a clinically relevant population. Participants were 399 patients diagnosed with either epilepsy or psychogenic nonepileptic seizures on the basis of video-electroencephalograph monitoring. The internal structure of the MMPI-2-RF was evaluated using taxometric, confirmatory factor analysis, and item response theory procedures. Data from 4 content-specific scales directly related to RC1 (Malaise, Gastrointestinal Complaints, Head Pain Complaints, and Neurological Complaints) indicated that the latent construct of somatization is a dimensional variable with a bifactor structure. However, consistent with the scale's construction, a unidimensional model also provided adequate fit. A 2-parameter logistic item response theory model better accounted for observed item responses than did 1- or 3-parameter models. Results suggest that the RC1 scale is most precise for T score estimates between 55 and 90. Overall, the scale appears to be well suited for the assessment of somatization.

AB - The MMPI-2 Restructured Form (MMPI-2-RF; Tellegen & Ben-Porath, 2008) was designed to be psychometrically superior to its MMPI-2 counterpart. However, the test has yet to be extensively evaluated in diverse clinical settings. The purpose of this study was to examine the psychometric properties of the MMPI-2-RF Somatic Complaints (RC1) scale in a clinically relevant population. Participants were 399 patients diagnosed with either epilepsy or psychogenic nonepileptic seizures on the basis of video-electroencephalograph monitoring. The internal structure of the MMPI-2-RF was evaluated using taxometric, confirmatory factor analysis, and item response theory procedures. Data from 4 content-specific scales directly related to RC1 (Malaise, Gastrointestinal Complaints, Head Pain Complaints, and Neurological Complaints) indicated that the latent construct of somatization is a dimensional variable with a bifactor structure. However, consistent with the scale's construction, a unidimensional model also provided adequate fit. A 2-parameter logistic item response theory model better accounted for observed item responses than did 1- or 3-parameter models. Results suggest that the RC1 scale is most precise for T score estimates between 55 and 90. Overall, the scale appears to be well suited for the assessment of somatization.

KW - Confirmatory factor analysis

KW - Item response theory

KW - Minnesota multiphasic personality inventory-2 restructured form

KW - Psychogenic nonepileptic seizures

KW - Taxometrics

UR - http://www.scopus.com/inward/record.url?scp=77956747868&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956747868&partnerID=8YFLogxK

U2 - 10.1037/a0019229

DO - 10.1037/a0019229

M3 - Article

C2 - 20822262

AN - SCOPUS:77956747868

VL - 22

SP - 492

EP - 503

JO - Psychological Assessment

JF - Psychological Assessment

SN - 1040-3590

IS - 3

ER -