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