Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists
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Arch Clin Neuropsychol · Aug 2018
How Flexible is the Use of Egocentric Versus Allocentric Frame of Reference in the Williams Syndrome Population?
This study examined the spontaneous use of allocentric and egocentric frames of reference and their flexible use as a function of instructions. ⋯ Results demonstrate that despite difficulties in the spontaneous use of allocentric and egocentric frames of reference, some Williams Syndrome participants show flexibility in the use of an allocentric frame of reference when an explicit instruction is provided.
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Arch Clin Neuropsychol · Aug 2018
Performance Validity, Neurocognitive Disorder, and Post-concussion Symptom Reporting in Service Members with a History of Mild Traumatic Brain Injury.
To examine the influence of different performance validity test (PVT) cutoffs on neuropsychological performance, post-concussion symptoms, and rates of neurocognitive disorder and postconcussional syndrome following mild traumatic brain injury (MTBI) in active duty service members. ⋯ PVT performance is significantly and meaningfully related to overall neuropsychological outcome. By using only original cutoffs, clinicians and researchers may miss people with invalid performances.