An MMPI-2 scale to detect malingered depression (Md scale)

Area of Science:

• Psychological Assessment
• Clinical Psychology
• Forensic Psychology

Background:

• Detecting malingered depression on psychological assessments is crucial for accurate diagnosis.
• The Minnesota Multiphasic Personality Inventory-2 (MMPI-2) is a widely used tool, necessitating specialized scales for validity.
• Existing methods may not adequately identify sophisticated attempts to feign depressive symptoms.

Purpose of the Study:

• To develop and validate a specialized MMPI-2 scale to detect malingered depression.
• To assess the scale's ability to differentiate between genuine and feigned depressive symptoms.
• To evaluate the incremental validity and utility of the new scale.

Main Methods:

• Construction of the Malingered Depression (Md) scale using 32 discriminating items.
• Validation in college student samples, including those feigning depression and those with genuine depressive symptoms.
• Cross-validation to assess incremental validity and utility.

Main Results:

• The Md scale successfully discriminated between college students feigning depression and those genuinely depressed.
• The scale demonstrated promising utility in identifying malingered depressive symptoms.
• Cross-validation supported the scale's effectiveness in diverse samples.

Conclusions:

• The developed Md scale is a valuable tool for detecting malingered depression on the MMPI-2.
• This scale enhances the accuracy of psychological assessments by identifying deceptive response patterns.
• Further research can explore the Md scale's application in various clinical populations.