Ability of the Wisconsin Card-Sorting Test-64 as an embedded measure to identify noncredible neurocognitive performance in mild traumatic brain injury litigants.

Objective: To investigate the ability of selective measures on the Wisconsin Card Sorting Test-64 (WCST-64) to predict noncredible neurocognitive dysfunction in a large sample of mild traumatic brain injury (mTBI) litigants.

Method: Participants included 114 adults who underwent a comprehensive neuropsychological examination. Criterion groups were formed based upon their performance on stand-alone measures of cognitive performance validity (PVT).

Detection of noncredible cognitive performance with Wechsler Memory Scale-IV measures in mild traumatic brain injury litigants.

Objective: To investigate the operating characteristics of selective measures on the Wechsler Memory Scale-IV (WMS-IV) to predict noncredible neurocognitive dysfunction in a sample of mild traumatic brain injury (mTBI) litigants.

Method: Participants included 110 adults who underwent a comprehensive neuropsychological examination. Criterion groups were formed based upon their performance on stand-alone measures of cognitive performance validity testing (PVT).

Response time measures on the Word Memory Test do not add incremental validity to accuracy scores in predicting noncredible neurocognitive dysfunction in mild traumatic brain injury litigants.

The objective of the current study was to investigate whether response time measures on the Word Memory Test (WMT) increase predictive validity on determining noncredible neurocognitive dysfunction in a large sample of mild traumatic brain injury (MTBI) litigants. Participants included 203 adults who underwent a comprehensive neuropsychological examination. Criterion groups were formed based upon their performance on stand-alone measures of cognitive performance validity (PVT).

The Pain Disability Index: Effects of performance and symptom validity in mild traumatic brain injury litigants with persistent Post-Concussion pain complaints.

Objective: Objectives of the current study were to cross validate the Pain Disability Index (PDI) as a measure of symptom validity in a large sample of mild traumatic brain injury (MTBI) litigants with persistent post-concussive pain complaints, and investigate the effects of performance and symptom validity testing on PDI scores.

Methods: Participants included 91 adults who underwent a comprehensive neuropsychological examination. Criterion groups were formed based upon their performance on stand-alone measures of cognitive performance validity (PVT), and the MMPI-2-RF Symptom Validity Scale (FBS-r) as a measure of symptom validity (SVT).

The Continuous Visual Memory Test: Update and extension on the operating characteristics as an embedded measure of cognitive performance validity.

To compare and update predictive models comprised of embedded measures from the Continuous Visual Memory Test (CVMT) in their ability to predict performance validity in personal injury litigants. Ninety-two personal injury litigants underwent a comprehensive neuropsychological examination. Criterion groups were formed, i.

The relationship of cogniphobia to performance validity and symptom validity in neuropsychological assessment.

Objective: Emerging research suggests that fear and avoidance are associated with not only physical symptoms, but also cognitive functioning. The concept of cogniphobia describes the fear and avoidance of cognitively effortful tasks to avoid the onset or worsening of symptoms. Extant studies provide preliminary evidence for associations between cogniphobia and validity testing.

The Modified Somatic Perception Questionnaire: Operating characteristics in non-pain forensic samples.

The objective of the current archival study was to investigate the ability of the Modified Somatic Perception Questionnaire (MSPQ) to discriminate between noncredible and credible neurocognitive dysfunction in a large mixed non-pain forensic sample comprised of personal injury litigants and disability claimants. Participants included 149 adults who underwent comprehensive neuropsychological examination. Criterion groups were formed, i.

Posttraumatic stress disorder and noncredible symptom reporting on the Trauma Symptom Inventory-2.

This archival study sought to investigate the ability of raw scores on the Atypical Response scale (ATR) and TRAUMA Factor of the Trauma Symptom Inventory-2 to predict noncredible cognitive performance validity testing (PVTs) in personal injury litigants and disability claimants with posttraumatic stress disorder (PTSD). Participants included 51 adults diagnosed with PTSD who underwent comprehensive neuropsychological examination. Criterion groups were formed based upon passing (Credible Group) or failing (Noncredible Group) cognitive performance validity tests (PVTs).

Illness Perceptions Predict Cognitive Performance Validity.

Objectives: The aim of this study was to investigate the relationship of psychological variables to cognitive performance validity test (PVT) results in mixed forensic and nonforensic clinical samples.

Methods: Participants included 183 adults who underwent comprehensive neuropsychological examination. Criterion groups were formed, that is, Credible Group or Noncredible Group, based upon their performance on the Word Memory Test and other stand-alone and embedded PVT measures.

[Formula: see text]evidence of neuropsychological dysfunction in Stevens-Johnson Syndrome and toxic epidermal necrolysis: case report.

Stevens-Johnson Syndrome (SJS) and toxic epidermal necrolysis (TEN) is a potentially life-threatening critical illness affecting multiple organ systems including the peripheral and central nervous system. This case report involves a young man who was diagnosed with SJS/TEN at age 16 and underwent neuropsychological assessment at age 21. Results indicate a diffuse pattern of cerebral compromise and represent a decline from premorbid level of functioning.

Development of the MMPI-2 cognitive complaints scale as an embedded measure of symptom validity.

Objective: To empirically-derive a new MMPI-2 sub-scale, the 13-item Cognitive Complaints Scale (CCS), as an embedded measure of symptom validity. This study hypothesized that mild traumatic brain injured subjects with financial incentives who failed performance validity tests (PVTs) would score significantly higher on the CCS compared to mild traumatic brain injured subjects with financial incentives who passed PVTs. Mild traumatic brain injured controls with no financial incentives were predicted to score lowest on the CCS.

Use of the color trails test as an embedded measure of performance validity.

One hundred personal injury litigants and disability claimants referred for a forensic neuropsychological evaluation were administered both portions of the Color Trails Test (CTT) as part of a more comprehensive battery of standardized tests. Subjects who failed two or more free-standing tests of cognitive performance validity formed the Failed Performance Validity (FPV) group, while subjects who passed all free-standing performance validity measures were assigned to the Passed Performance Validity (PPV) group. A cutscore of ≥45 seconds to complete Color Trails 1 (CT1) was associated with a classification accuracy of 78%, good sensitivity (66%) and high specificity (90%), while a cutscore of ≥84 seconds to complete Color Trails 2 (CT2) was associated with a classification accuracy of 82%, good sensitivity (74%) and high specificity (90%).

Derivation of the MMPI-2-RF Henry-Heilbronner Index-r (HHI-r) scale.

The 15-item Henry-Heilbronner Index (HHI) was published in 2006 as an MMPI-2 embedded measure of psychological response validity. When the MMPI-2 was revised in 2008 only 11 of the 15 original HHI items were retained on the MMPI-2-RF, prohibiting use of the HHI as an embedded validity indicator on the MMPI-2-RF. Using the original HHI sample an 11-item version of the HHI, the HHI-r, was evaluated for use as an embedded measure of psychological response validity for the MMPI-2-RF.

Noncredible performance in individuals with external incentives: empirical derivation and cross-validation of the Psychosocial Distress Scale (PDS).

Using a known groups design, a new Minnesota Multiphasic Personality Inventory (MMPI-2) subscale, the 20-item Psychosocial Distress Scale (PDS), was empirically derived and cross-validated. The PDS demonstrated good classification accuracy between subjects under external incentive vs. no incentive conditions.

Official position of the American Academy of Clinical Neuropsychology on serial neuropsychological assessments: the utility and challenges of repeat test administrations in clinical and forensic contexts.

Serial assessments are now common in neuropsychological practice, and have a recognized value in numerous clinical and forensic settings. These assessments can aid in differential diagnosis, tracking neuropsychological strengths and weaknesses over time, and managing various neurologic and psychiatric conditions. This document provides a discussion of the benefits and challenges of serial neuropsychological testing in the context of clinical and forensic assessments.

Comparison of the Lees-Haley Fake Bad Scale, Henry-Heilbronner Index, and restructured clinical scale 1 in identifying noncredible symptom reporting.

A known groups design investigated the comparative predictive validity of the 27-item MMPI-2 Restructured Scale 1 (RC1), the 43-item Lees-Haley Fake Bad Scale (FBS), and the 15-item Henry-Heilbronner Index (HHI) to identify noncredible symptom response sets in 63 personal injury litigants and disability claimants compared to 77 non-litigating head-injured controls. Logistic regression analyses revealed that the HHI and FBS were better predictors of group membership than the RC1. Results suggest that the FBS, HHI, and RC1 may be measuring different constructs.

Comparison of the MMPI-2 restructured Demoralization Scale, Depression Scale, and Malingered Mood Disorder Scale in identifying non-credible symptom reporting in personal injury litigants and disability claimants.

A known groups design compared the ability of the 24-item MMPI-2 Restructured Clinical Demoralization Scale (RCd), the 57-item Depression Scale (Scale 2), and the 15-item Malingered Mood Disorder Scale (MMDS) to identify non-credible symptom response sets in 84 personal injury litigants and disability claimants compared to 77 non-litigating head-injured controls. All three scales showed large effect sizes (>0.80).

Empirical derivation of a new MMPI-2 scale for identifying probable malingering in personal injury litigants and disability claimants: the 15-item Malingered Mood Disorder Scale (MMDS).

A new 15-item MMPI-2 subscale, the Malingered Mood Disorder Scale (MMDS), was empirically derived from the original 32-item Malingered Depression Scale (MDS) of Steffan, Clopton, and Morgan (2003). The MMDS was superior to the original MDS in identification of symptom exaggeration in personal injury litigants and disability claimants compared to non-litigating head-injured controls. Logistic regression revealed that a cut score of > or = 7 on the MMDS produced good specificity (93.

Probable malingering and performance on the Continuous Visual Memory Test.

A known groups design involving 54 personal injury litigants, and disability claimants was employed to investigate group differences on the Continuous Visual Memory Test (CVMT). Group status was determined by performance on symptom validity testing and application of the Slick et al., 1999 diagnostic criteria for probable Malingered Neurocognitive Dysfunction (MND).

The Henry-Heilbronner Index: a 15-item empirically derived MMPI-2 subscale for identifying probable malingering in personal injury litigants and disability claimants.

A new 15-item MMPI-2 subscale, the Henry-Heilbronner Index (HHI), representing a "pseudosomatic factor," was empirically derived from both the 43-item Lees-Haley Fake Bad Scale (FBS) and the 17-item Shaw and Matthews' Pseudoneurologic Scale (PNS). The HHI was superior to both the FBS and PNS in identification of symptom exaggeration in personal injury litigants and disability claimants compared to non-litigating head-injured controls. Logistic regression analyses revealed that a cutscore of > or = 8 on the HHI was associated with good specificity (89%) and sensitivity (80%).

Probable malingering and performance on the test of variables of attention.

Fifty subjects with mild head injury involved in personal injury litigation and 2 subjects referred for evaluation of their disability status underwent comprehensive neuropsychological examination including the Test of Variables of Attention (TOVA). Group status was determined by performance on symptom validity testing. Twenty-six subjects who failed symptom validity testing formed the probable malingering (PM) group, while 26 subjects who passed symptom validity testing comprised the not malingering (NM) group.