Purpose: Of the three currently recognized variants of primary progressive aphasia, behavioral differentiation between the nonfluent/agrammatic (nfvPPA) and logopenic (lvPPA) variants is particularly difficult. The challenge includes uncertainty regarding diagnosis of apraxia of speech, which is subsumed within criteria for variant classification.…

Whether performance patterns on four variables from the California Verbal Learning Test could differentiate patients with moderate or severe brain injuries from those with mild injuries giving incomplete effort was studied with 46 patients, half of whom were in litigation. The test appeared to be useful as part of an evaluation of brain injury.…