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The Impact of Underreporting on MMPI-2-RF Substantive Scale Scores

Crighton, Adam H
http://rave.ohiolink.edu/etdc/view?acc_num=kent1491561723372266

Abstract Details

2017, MA, Kent State University, College of Arts and Sciences / Department of Psychological Sciences.
Due to the dearth of research examining the impact of underreporting on the validity of test scores, and the inconsistent findings from previous research regarding the utility of protocol validity scales (e.g., McGrath et al., 2010; Rohling et al., 2011), it is necessary to further investigate the utility of underreporting validity scales. The aims of the current study were three-fold: first, to investigate the impact of underreporting on MMPI-2-RF substantive scale score validity; second, to investigate the discriminant validity of the underreporting scales in differentiating various forms of simulated underreporting; and third, to examine the moderating effects of the MMPI-2-RF underreporting Validity Scale scores on substantive scale score criterion validity. This study incorporated a simulation design with a sample of 275 undergraduate college students who were all administered criterion mesures under standard instructions that assess various domains relevant to the MMPI-2-RF substantive scales. Next, participants were randomly assigned to receive either standard instructions, instructions to underreport appearing very well-adjusted, or instructions to appear very virtuous when completing the MMPI-2-RF. The results indicated that underreporting impacts substantive scale score validity on the MMPI-2-RF, and there were moderating effects of the underreporting Validity Scales (notably K-r) on associations between MMPI-2-RF Restructured Clinical Scales and external criterion measures. These findings provide evidence for the utility of underreporting validity indicators when interpreting substantive scale scores, as well as demonstrate the utility of MMPI-2-RF L-r and K-r in identifying protocols marked by underreporting.
Yossef Ben-Porath, Ph.D. (Advisor)
John Gunstad, Ph.D. (Committee Member)
Mary Beth Spitznagel, Ph.D. (Committee Member)
Manfred van Dulmen, Ph.D. (Committee Member)
109 p.
Psychological Tests; Psychology
MMPI-2-RF; response bias; validity scales; underreporting; moderation

Recommended Citations

Citations

  • Crighton, A. H. (2017). The Impact of Underreporting on MMPI-2-RF Substantive Scale Scores [Master's thesis, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1491561723372266

    APA Style (7th edition)

  • Crighton, Adam. The Impact of Underreporting on MMPI-2-RF Substantive Scale Scores. 2017. Kent State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1491561723372266.

    MLA Style (8th edition)

  • Crighton, Adam. "The Impact of Underreporting on MMPI-2-RF Substantive Scale Scores." Master's thesis, Kent State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1491561723372266

    Chicago Manual of Style (17th edition)

kent1491561723372266
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© 2017, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.