New data on the NV-MSVT

Emerging data on the sensitivity of the (nonverbal) NV-MSVT show that it is more sensitive than TOMM and that it has very high specificity indeed. The table shows the sensitivity and specificity of several tests as predictors of WMT failure.

See this paper: DISCUSSIONS/RECENT_PAPERS_2010/TOMM_vs_NV-MSVT_abstract_only.doc

See the independent review of the NV-MSVT by John G. Wager and Laura L. S. Howe (2010) Nonverbal Medical Symptom Validity Test: Try Faking Now!

APPLIED NEUROPSYCHOLOGY, 17: 305-309.

NV-MSVT offers increased sensitivity and high specificity for poor effort. It also contains measures of memory (e.g. Free Recall). This computer-administered test, takes not much more than five minutes of patient time on test and even less of the tester’s time.

Other tests as predictors of WMT failure
 
MSVT
NV-MSVT
TOMM
Sensitivity
0.7
0.6
0.4
Time on test
5-6 minutes
5-6 minutes
20-30 minutes
Specificity
0.9
0.98
1.0
Base rate assumption
0.5
0.5
0.5
Positive Predictive Power (PPP)
0.9
0.97
1.0
Negative Predictive Power (NPP)
0.76
0.7
0.63