Ryan W Schroeder

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This study examines the effectiveness of symptom validity measures to detect suspect effort in cognitive testing and invalid completion of ADHD behavior rating scales in 268 adults referred for ADHD assessment. Patients were diagnosed with ADHD based on cognitive testing, behavior rating scales, and clinical interview. Suspect effort was diagnosed by at(More)
This study utilized multiple criterion group neuropsychological samples to evaluate the "over-reporting" and "under-reporting" MMPI-2-RF validity scales. The five criterion groups included in this study were (1) litigating traumatic brain injury patients who failed Slick et al. criteria for probable malingering, (2) litigating traumatic brain injury(More)
Although it is recognized that significant cognitive deficits are inherent in many psychiatric disorders, there is minimal research on whether the deficits can cause a failing score on symptom validity tests (SVTs). The performances of 104 and 178 patients with psychotic disorders and non-psychotic psychiatric disorders, respectively, on seven SVTs were(More)
BACKGROUND The Coin-in-the-Hand Test was developed to help clinicians distinguish patients who are neurocognitively impaired from patients who are exaggerating or feigning memory complaints. Previous findings have shown that participants asked to feign memory problems and patients suspected of malingering performed worse on the test than patients with(More)
Frontotemporal dementia is a cause of behavioral disturbance that usually appears in individuals between 45 and 65 years of age. The authors present the case of a 65-year-old patient that illustrates how frontotemporal dementia can be misdiagnosed based on a behavioral pattern that suggests the presence of a primary mood disorder. Early accurate diagnosis(More)
Wernicke-Korsakoff syndrome is caused by thiamine (vitamin B1) deficiency, typically resulting from malnutrition secondary to chronic alcohol abuse. Less often, other conditions can lead to malnutrition and Wernicke-Korsakoff syndrome. We describe a 35-year-old man who developed Wernicke-Korsakoff syndrome with a typical neurologic and neuropsychological(More)
Previous research has demonstrated RBS and FBS-r to identify non-credible reporters of cognitive symptoms, but the extent that these scales might be influenced by true neurocognitive dysfunction has not been previously studied. The present study examined the relationship between these cognitive validity scales and neurocognitive performance across seven(More)
This study examined differences in raw scores on the Symptom Validity Scale and Response Bias Scale (RBS) from the Minnesota Multiphasic Personality Inventory-2 in three criterion groups: (i) valid traumatic brain injured, (ii) invalid traumatic brain injured, and (iii) psychogenic non-epileptic seizure disorders. Results indicate that a >30 raw score(More)
OBJECTIVE Excessive Decline from Premorbid Functioning (EDPF) is presented as a construct and defined as a discrepancy between predicted premorbid ability and current test performance that is so atypical of individuals with true neurocognitive impairment that it is likely the product of performance invalidity. New embedded PVTs (EDPF-FSIQ, EDPF-VW, and(More)
OBJECTIVE The current study investigated expert beliefs and practices as they relate to neuropsychological validity testing. METHODS North American neuropsychologists with expertise in neuropsychological validity testing (n = 24) were surveyed on numerous items related to validity testing. Results were analyzed and compared to findings from a prior expert(More)