Brad Tyson

Brad Tyson
EvergreenHealth Medical Center · Neuroscience Institute

Doctor of Clinical Psychology

About

29
Publications
21,543
Reads
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460
Citations
Citations since 2017
21 Research Items
439 Citations
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2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
Introduction
Additional affiliations
December 2014 - May 2017
Western Washington Medical Group
Western Washington Medical Group
Position
  • Clinical Neuropsychologist

Publications

Publications (29)
Article
Full-text available
Objective: This study was designed to replicate previous research on critical item analysis within the Word Choice Test (WCT). Method: Archival data were collected from a mixed clinical sample of 119 consecutively referred adults (Mage = 51.7, Meducation = 14.7). The classification accuracy of the WCT was calculated against psychometrically defi...
Article
Background: Delirium is a common neurologic manifestation of coronavirus disease 2019 (COVID–19) in older adults who present to the emergency department (ED). Objective: To investigate clinical characteristics associated with delirium as a presenting symptom of COVID–19 in older adults and develop a logistic regression to predict the likelihood of...
Poster
Full-text available
Objective: We investigated the diagnostic utility of the "motor perseveration sign" for the identification of mild neurocognitive disorder and dementia in patients referred for neuropsychological evaluation. Background: Motor perseveration is a well-documented clinical sign of neurological dysfunction, though there is limited research regarding it...
Poster
Full-text available
Objective: We described clinical characteristic in 18 individuals with PD and COVID-19. Background: Individuals with PD are at risk for poor outcomes in the context of COVID-19, though more research is needed. Methods: We retrospectively analyzed data from 18 consecutive patients with PD and COVID-19 presenting to a suburban hospital in Washington...
Article
Full-text available
Objective : Replicate previous research on Logical Memory Recognition (LMRecog) and perform a critical item analysis. Method : Performance validity was psychometrically operationalized in a mixed clinical sample of 213 adults. Classification of the LMRecog and nine critical items (CR-9) was computed. Results : LMRecog ≤20 produced a good combinat...
Article
Full-text available
This study was designed to determine the clinical utility of embedded performance validity indicators (EVIs) in adults with intellectual disability (ID) during neuropsychological assessment. Based on previous research, unacceptably high (>16%) base rates of failure (BRFail) were predicted on EVIs using on the method of threshold, but not on EVIs ba...
Article
Full-text available
Objective This project was designed to cross-validate existing performance validity cutoffs embedded within measures of verbal fluency (FAS and animals) and develop new ones for the Emotion Word Fluency Test (EWFT), a novel measure of category fluency. Method The classification accuracy of the verbal fluency tests was examined in two samples (70 c...
Article
Full-text available
Objective This study was designed to investigate clinical characteristics associated with mortality and predictors of survival in older adults hospitalized with COVID-19 with a focus on neurological comorbidities and presenting neurological manifestations.Methods We compared clinical characteristics in an age- and gender-matched sample of 75 deceas...
Article
Rationale Cognitive problems are common in adults with epilepsy and significantly affect their quality of life. HOBSCOTCH (HOme Based Self-management and COgnitive Training CHanges lives) was developed to teach problem-solving and compensatory memory strategies to these individuals. This study examined whether HOBSCOTCH is associated with improveme...
Article
Objective: The aim of this study was to report neurologic manifestations, medical comorbidities and discharge outcomes of COVID-19 in ten patients with Parkinson’s Disease (PD). Background: There is a rapidly accumulating literature regarding neurologic manifestations of COVID-19, but few studies investigating COVID-19 in PD specifically. Individu...
Article
Full-text available
Objective: The purpose of this study was to investigate the occurrence of neurologic symptoms with a focus on altered mental status in a sample of deaths due to COVID-19. Methods: We reviewed neurologic symptoms in 71 deaths due to COVID-19 at the first US hospital with reported cases, of which 66 (93%) had medical comorbidities, 47 (66%) came from...
Article
Full-text available
Objective The purpose of this study was to investigate the occurrence of neurologic symptoms with a focus on altered mental status in a sample of deaths due to COVID-19. Methods We reviewed neurologic symptoms in 71 deaths due to COVID-19 at the first US hospital with reported cases, of which 66 (93%) had medical comorbidities, 47 (66%) came from...
Article
Full-text available
The diagnostic utility of the "attended alone" sign, defined here as attending a neuropsychological evaluation unaccompanied, was investigated in a sample of patients presenting for neuropsychological evaluation. Data was gathered through a retrospective review of 275 consecutive patients seen by a neuropsychologist in a general psychology clinic s...
Article
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Article
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This study was designed to investigate the effects of timing on the likelihood of failing the Recognition Memory Test–Words (RMT) and Word Choice Test (WCT). The RMT and WCT were administered in counterbalanced order either at the beginning (Time 1) or at the end (Time 2) of a test battery to a mixed clinical sample of 196 patients (M<sub>age</sub>...
Article
Full-text available
A link between noncredible responding and low scores on the Grooved Pegboard Test (GPB) is well documented in the clinical literature. However, no specific validity cutoffs have emerged in previous research. This study was designed to examine the classification accuracy of various demographically adjusted cutoffs on the GPB against established meas...
Article
Full-text available
This study was designed to examine the clinical utility of critical items within the Recognition Memory Test (RMT) and the Word Choice Test (WCT). Archival data were collected from a mixed clinical sample of 202 patients clinically referred for neuropsychological testing (54.5% male; mean age ¼ 45.3 years; mean level of education ¼ 13.9 years). The...
Article
Full-text available
Introduction: The Recognition Memory Test (RMT) and Word Choice Test (WCT) are structurally similar, but psychometrically different. Previous research demonstrated that adding a time-to-completion cutoff improved the classification accuracy of the RMT. However, the contribution of WCT time-cutoffs to improve the detection of invalid responding has...
Article
Full-text available
Scores on the Complex Ideational Material (CIM) were examined in reference to various performance validity tests (PVTs) in 106 adults clinically referred for neuropsychological assessment. The main diagnostic categories, reflecting a continuum between neurological and psychiatric disorders, were epilepsy, psychiatric disorders, postconcussive disor...
Article
Full-text available
Research suggests that select processing speed measures can also serve as embedded validity indicators (EVIs). The present study examined the diagnostic utility of Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) subtests as EVIs in a mixed clinical sample of 205 patients medically referred for neuropsychological assessment (53.3% female,...
Article
Objective: Although reported to be effective as a performance validity test (PVT) in TBI and ADHD, little is known about the ability of the CPT-II to model performance validity in psychiatric patients. Also, while repeat CPT-II administrations have been shown to enhance its diagnostic accuracy in ADHD evaluations, the effect of such strategic redun...
Chapter
The cerebellum is increasingly recognized as a structure that regulates cognitive and emotional functioning in much the same way that it modulates motor activity. Reciprocal connections with association cortices facilitate cerebellar modulation of implicit learning and executive processes, while dense connections with paralimbic regions allow for c...
Article
Full-text available
The cerebellum is increasingly recognized as a structure that regulates cognitive and emotional functioning in much the same way that it modulates motor activity. Reciprocal connections with prefrontal and temporoparietal association cortices facilitate cerebellar modulation of implicit learning and executive functions, while connections with paral...
Article
Full-text available
Deficits in cognitive functioning are associated with many safety concerns, including difficulties performing activities of daily living, medication errors, motor vehicle accidents, impaired awareness of deficits, decision-making capacity, falls, and travel away from home. Preventing adverse safety outcomes is particularly relevant in rehabilitatio...

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