In litigating patients, the data on embedded symptom validity indices do not support their use at the exclusion of free standing SVTs
On page 487 of the Archives of Clinical Neuropsychology conference abstracts (vol 24, issue 5, August, 2009), there is a study of the relative sensitivity and specificity of embedded effort measures versus stand alone SVTs like the TOMM, Rey-15, VSVT and WMT.