Lee Ashendorf

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The objective of the present study was to provide normative data for Trail Making Test (TMT) time to completion and performance errors among cognitively normal older adults, and to examine TMT error rates in conjunction with time scores for pre-clinical and clinical Alzheimer's disease (AD) diagnostic decision-making. A sample of 526 individuals was(More)
Tests of possible malingering are in increasing demand among neuropsychologists. The Test of Memory Malingering (TOMM) is resistant to many neurological conditions, including traumatic brain injury, dementia, and aphasia. Less clear is the impact of psychological conditions on TOMM performance. This study examined a sample of community-based older adults(More)
The presence of third parties during neuropsychological evaluations is an issue of concern for contemporary neuropsychologists. Previous studies have reported that the presence of an observer during neuropsychological testing alters the performance of individuals under evaluation. The present study sought to investigate whether audio-recording affects the(More)
Strategies for the detection of possible malingering have largely taken two forms. First is the development and validation of domain-specific measures of malingering designed specifically for the detection of malingering (e.g., Test Of Memory Malingering, Word Memory Test, and Word Completion Memory Test). The second has been the development and evaluation(More)
UNLABELLED The Finger Tapping Test (FTT) and Grooved Pegboard Test (GPT) are commonly used in neuropsychological assessments. The performance of healthy older adults on these tasks has not been well characterized in the existing literature. The present study examines FTT and GPT performance in a sample of 307 community-dwelling older individuals (ages(More)
The detection of suboptimal effort has become crucial in clinical neuropsychological practice in order to make accurate diagnoses, prognoses, and referrals. Symptom Validity Testing (SVT) has been the most commonly utilized model for assessing effort, and frequently includes recognition memory tasks. Some conflicting views on this model purport, however,(More)
It is well established that performance on the Wisconsin Card Sorting Test (WCST) tends to decline with advanced age, but the reason for this decline has not been established. The objective of the present study was to clarify this question using a qualitative approach to the task. The WCST was administered to 19 older adults and 25 younger participants. In(More)
The current study examined the effect of diagnosis threat on self-efficacy and neuropsychological performance in mild traumatic brain injury (TBI). Forty-nine participants with a history of mild TBI were randomized to a diagnosis threat or control group. The diagnosis threat group were told they were selected based on their history of TBI, while control(More)
OBJECTIVE Forced-choice (FC) recognition memory is a common performance validity assessment methodology. This study introduces and evaluates the classification accuracy of a FC recognition trial for the Rey Auditory Verbal Learning Test (RAVLT). METHOD The present sample of 122 military veterans (Mean age = 35.4, SD = 9.3) were all administered the RAVLT(More)
OBJECTIVE While recognition memory has been the primary tool for the assessment of performance validity in neuropsychological evaluations, some consideration has also been given to embedded measures from other cognitive domains, including processing speed. The present study evaluated the classification accuracy of several speed-based measures in a Veterans(More)