Journal of the International Neuropsychological Society, 2011
Cultural differences in time attitudes and their effect on timed neuropsychological test performa... more Cultural differences in time attitudes and their effect on timed neuropsychological test performance were examined in matched non-clinical samples of 100 Russian and American adult volunteers using 8 tests that were previously reported to be relatively free of cultural bias: Color Trails Test (CTT); Ruff Figural Fluency Test (RFFT); Symbol Digit Modalities Test (SDMT); and Tower of London-Drexel Edition (ToLDx). A measure of time attitudes, the Culture of Time Inventory (COTI-33) was used to assess time attitudes potentially affecting time-limited testing. Americans significantly outscored Russians on CTT, SDMT, and ToLDx(p< .05) while differences in RFFT scores only approached statistical significance. Group differences also emerged in COTI-33 factor scores, which partially mediated differences in performance on CTT-1, SDMT, and ToLDxinitiation time, but did not account for the effect of culture on CTT-2. Significant effect of culture was revealed in ratings of familiarity with ...
Objective: The current study aims to assess the relationship among scores on the test of memory m... more Objective: The current study aims to assess the relationship among scores on the test of memory malingering (TOMM) and general demographics (age, education, ethnicity, and gender) as well as military-specific variables (Armed Services Vocational Aptitude Battery (ASVAB), number of deployments, and blasts) using a large military sample. Method: An archival dataset (https://osf.io/rv9cj/), representative of the military personnel according to the Marine Corps Demographics Update (2015) consisting of 875 participants between 18-62 years, predominately male and caucasian was analyzed. Participants were referred by their medical provider for psychological and/or neurological complaints and completed a neuropsychological evaluation comprised of a clinical interview and a neuropsychological blast battery consisting of demographics and 15 tests, including the TOMM. Pre-morbid information was gathered using the ASVAB which has the following subscales: armed forces qualification test, general...
Traumatic brain injury is a prevalent condition effecting soldiers involved in current military o... more Traumatic brain injury is a prevalent condition effecting soldiers involved in current military operations. Of the developing research surrounding recovery following TBI, many studies initiate from civilian sources. As part of collaborate research, a dataset of 814 soldiers was compiled. Participants were interviewed and assessed with a neuropsychological battery. The current study analyses differences in 114 soldiers who were tested twice because of medical board procedures. Analysis indicates significant increases in Grooved Pegboard and subscales of the WAIS-IV and Hayling-Brtixton test. Further results, standard indications of change, the role of recovery, and practice effects will be discussed.
The Luria-Nebraska Neuropsychological Battery was administered to 40 inpatient schizophrenics (17... more The Luria-Nebraska Neuropsychological Battery was administered to 40 inpatient schizophrenics (17 nonbrain-damaged and 23 brain-damaged) at a state hospital. Results indicated that 109 individual items as well as all 14 summary scales were significantly different between groups. Findings were reviewed with regard to clinical effectiveness of brain damage detection with the Luria-Nebraska in these populations and to supporting the concept of neuropsychological deficit gradients.
Neuropsychological performance of schizophrenics with and without brain-damage was measured by th... more Neuropsychological performance of schizophrenics with and without brain-damage was measured by the Whitaker Index of Schizophrenic Thinking and the Luria-Nebraska Neuropsychological Battery. Inpatient volunteers (11 brain-damaged and 15 non-brain-damaged) with a diagnosis of schizophrenia were administered both tests individually. Results indicated that 8 of the 14 summary scales of the Luria-Nebraska but none of the 5 scores on the Whitaker differentiated between groups. While cognitive variables as measured by the Whitaker may be further impaired with organicity, other variables measured by the Luria-Nebraska were more effective in differentiating between groups.
Evaluated effects of reinforcement, proximity, and orientation on verbal behavior of female schiz... more Evaluated effects of reinforcement, proximity, and orientation on verbal behavior of female schizophrenics. Sixty-four inpatient state hospital volunteers (36 schizophrenics and 33 hospitalized controls) either were reinforced verbally or nonreinforced for construction of appropriate sentences. Also, participants were exposed to near or far proximity as well as direct or indirect orientation. Results indicated that schizophrenics performed best in the indirect orientation condition. While no differential group effects were seen across diagnosis, participants on the average responded more effectively when reinforced. These findings are contradictory to those reported in earlier studies of verbal conditioning in schizophrenics. Discussed were the detrimental effects of attentional demands on verbal conditioning in schizophrenics and the effectiveness of verbal reinforcement across hospitalized patients.
Journal of the International Neuropsychological Society, 2011
Cultural differences in time attitudes and their effect on timed neuropsychological test performa... more Cultural differences in time attitudes and their effect on timed neuropsychological test performance were examined in matched non-clinical samples of 100 Russian and American adult volunteers using 8 tests that were previously reported to be relatively free of cultural bias: Color Trails Test (CTT); Ruff Figural Fluency Test (RFFT); Symbol Digit Modalities Test (SDMT); and Tower of London-Drexel Edition (ToLDx). A measure of time attitudes, the Culture of Time Inventory (COTI-33) was used to assess time attitudes potentially affecting time-limited testing. Americans significantly outscored Russians on CTT, SDMT, and ToLDx(p< .05) while differences in RFFT scores only approached statistical significance. Group differences also emerged in COTI-33 factor scores, which partially mediated differences in performance on CTT-1, SDMT, and ToLDxinitiation time, but did not account for the effect of culture on CTT-2. Significant effect of culture was revealed in ratings of familiarity with ...
Objective: The current study aims to assess the relationship among scores on the test of memory m... more Objective: The current study aims to assess the relationship among scores on the test of memory malingering (TOMM) and general demographics (age, education, ethnicity, and gender) as well as military-specific variables (Armed Services Vocational Aptitude Battery (ASVAB), number of deployments, and blasts) using a large military sample. Method: An archival dataset (https://osf.io/rv9cj/), representative of the military personnel according to the Marine Corps Demographics Update (2015) consisting of 875 participants between 18-62 years, predominately male and caucasian was analyzed. Participants were referred by their medical provider for psychological and/or neurological complaints and completed a neuropsychological evaluation comprised of a clinical interview and a neuropsychological blast battery consisting of demographics and 15 tests, including the TOMM. Pre-morbid information was gathered using the ASVAB which has the following subscales: armed forces qualification test, general...
Traumatic brain injury is a prevalent condition effecting soldiers involved in current military o... more Traumatic brain injury is a prevalent condition effecting soldiers involved in current military operations. Of the developing research surrounding recovery following TBI, many studies initiate from civilian sources. As part of collaborate research, a dataset of 814 soldiers was compiled. Participants were interviewed and assessed with a neuropsychological battery. The current study analyses differences in 114 soldiers who were tested twice because of medical board procedures. Analysis indicates significant increases in Grooved Pegboard and subscales of the WAIS-IV and Hayling-Brtixton test. Further results, standard indications of change, the role of recovery, and practice effects will be discussed.
The Luria-Nebraska Neuropsychological Battery was administered to 40 inpatient schizophrenics (17... more The Luria-Nebraska Neuropsychological Battery was administered to 40 inpatient schizophrenics (17 nonbrain-damaged and 23 brain-damaged) at a state hospital. Results indicated that 109 individual items as well as all 14 summary scales were significantly different between groups. Findings were reviewed with regard to clinical effectiveness of brain damage detection with the Luria-Nebraska in these populations and to supporting the concept of neuropsychological deficit gradients.
Neuropsychological performance of schizophrenics with and without brain-damage was measured by th... more Neuropsychological performance of schizophrenics with and without brain-damage was measured by the Whitaker Index of Schizophrenic Thinking and the Luria-Nebraska Neuropsychological Battery. Inpatient volunteers (11 brain-damaged and 15 non-brain-damaged) with a diagnosis of schizophrenia were administered both tests individually. Results indicated that 8 of the 14 summary scales of the Luria-Nebraska but none of the 5 scores on the Whitaker differentiated between groups. While cognitive variables as measured by the Whitaker may be further impaired with organicity, other variables measured by the Luria-Nebraska were more effective in differentiating between groups.
Evaluated effects of reinforcement, proximity, and orientation on verbal behavior of female schiz... more Evaluated effects of reinforcement, proximity, and orientation on verbal behavior of female schizophrenics. Sixty-four inpatient state hospital volunteers (36 schizophrenics and 33 hospitalized controls) either were reinforced verbally or nonreinforced for construction of appropriate sentences. Also, participants were exposed to near or far proximity as well as direct or indirect orientation. Results indicated that schizophrenics performed best in the indirect orientation condition. While no differential group effects were seen across diagnosis, participants on the average responded more effectively when reinforced. These findings are contradictory to those reported in earlier studies of verbal conditioning in schizophrenics. Discussed were the detrimental effects of attentional demands on verbal conditioning in schizophrenics and the effectiveness of verbal reinforcement across hospitalized patients.
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