Related Experiment Video
Updated: Apr 25, 2026

The 4 Mountains Test: A Short Test of Spatial Memory with High Sensitivity for the Diagnosis of Pre-dementia Alzheimer's Disease
Published on: October 13, 2016
The detection of feigned impairment using the WMT, MSVT, and NV-MSVT
Patrick Armistead-Jehle1, Robert L Denney
1a Department of Behavioral Health , Munson Army Health Center , Fort Leavenworth , Kansas.
Abstract:
The current study sought to evaluate the sensitivity of the Word Memory Test, Medical Symptom Validity Test, and the Nonverbal Medical Symptom Validity Test (NV-MSVT) in a group of 50 well-educated individuals asked to simulate dementia. With use of the Genuine Memory Impairment Profile as operationalized by the Advanced Interpretation Program, sensitivities for single measures and the measures in combination ranged from 54% to 98% in the detection of suboptimal effort. Overall, the NV-MSVT appeared the most sensitive to feigned memory impairment in this sample.

