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Richard L Wanlass

Publications and source records attributed to Richard L Wanlass.

2 recordsLinked to original sources
PubMed2003

Personality assessment in neuropsychology: the nonspecificity of MMPI-2 neurocorrection methods.

Three established methods of neurocorrection claim to improve Minnesota Multiphasic Personality Inventory (MMPI)/MMPI-2 validity with closed-head injury (CHI) patients. These methods (which suggest removing "neurological" items from scoring) were employed here comparing 35 CHI patients with 35 psychiatric patients with elevated profiles. The 14-item correction changed 2-point codes for 41% of CHI and 31% of psychiatric profiles, the 30-item system changed 77% of CHI and 71% of psychiatric profiles, whereas the 37-item system changed 80% of CHI and 71% of psychiatric profiles. There were no significant differences between the two groups in number of profiles changed or number of neurocorrective items endorsed. Using each of the three correction systems, the following percentage of profiles remained elevated: 99%, 87%, and 89%, respectively.

Adult↗
PubMed2002

A multidimensional approach towards malingering detection.

A validation study using 62 subjects was conducted on the Multidimensional Investigation of Neuropsychological Dissimulation (MIND), a new neuropsychological instrument used to detect exaggeration of brain-injury symptoms. This instrument has eight scoring indices that use multiple, empirically based strategies to detect poor effort. Discriminant function analysis was used to classify three groups of subjects: normals responding in a sincere manner (N=24); normals who were educated about mild to moderate head injuries and given substantial incentives to malinger without obvious detection (N=21); and clinically diagnosed, brain-injured patients with mild to moderate impairments (N=17). A univariate F test indicated significant group differences on six of the eight original predictor variables. Using these six variables, there was an overall classification rate of 68%, reflecting only a 10% false negative rate in the dissimulating group. For a two-group classification (i.e., dissimulating and mildly to moderately brain-injured subjects), an 82% overall accuracy rate was achieved. The MIND appears to have potential for identifying individuals exaggerating mild to moderate neuropsychological deficits.

Journal Article↗