Biomedical subjects

Gary J Bryson

Publications and source records attributed to Gary J Bryson.

12 recordsLinked to original sources

PubMed2005

Relationship of impaired processing speed and flexibility of abstract thought to improvements in work performance over time in schizophrenia.

Vocational impairments in schizophrenia have been widely linked to deficits in neurocognition. This study examined the possibility that deficits in visuomotor processing speed and flexibility in abstract thought may in combination be an especially potent risk factor for poorer levels of work performance in rehabilitation. Fifty-seven participants with confirmed diagnoses of schizophrenia spectrum disorders were administered the Digit Symbol Subtest and the Wisconsin Card Sorting Test and then offered work placements in a vocational rehabilitation program. Work performance was assessed biweekly over two months using the Work Behavior Inventory. Multivariate and univariate repeated ANOVA revealed that participants classified as having no impairments in either visuomotor processing speed and flexibility in abstract thought (n=14) had superior work performance compared to participants with deficits in either one area (n=20) or both areas (n=23). Additionally, participants with no impairments were the only group to show significant improvement in work performance over 7 weeks of rehabilitation. Participants with only one deficit had significantly better work performance than participants with both deficits but showed no statistically significant improvement in work performance. Results suggest assessments of these domains of neurocognition may provide important information about individual needs for adjunct services.

Adult↗

PubMed2005

Can older people with schizophrenia benefit from work rehabilitation?

To determine whether older people with schizophrenia or schizoaffective disorder can benefit from work therapy as has been shown with their younger counterparts, 41 older patients (50+) were compared with 104 younger patients on their clinical and vocational outcomes while participating in a 6-month work therapy program. In an intent-to-treat analysis, both groups showed significant improvements in symptoms and quality of life at the conclusion of the active intervention, but there were no significant differences between age groups. In comparisons of biweekly Work Behavior Inventory scores for completers, older workers improved more than younger workers, particularly during the second half of the program. Results are in accord with previous evidence for the clinical and vocational benefits of work therapy and indicate that older people with schizophrenia or schizoaffective disorder can perform at least as well as their younger counterparts and respond similarly with improved symptoms and quality of life.

Adult↗

PubMed2005

Predictors of remediation success on a trained memory task.

Cognitive remediation has led to improvements for some but not all individuals with schizophrenia. The goal of the current investigation was to determine which variables predicted response to cognitive remediation training. In a sample of 58 patients with DSM-IV schizophrenia or schizoaffective disorder, normalization of performance on a trained memory task was selected as the criterion for successful remediation. The contribution of demographic, symptom, treatment process, and cognitive variables in predicting successful remediation was examined using a series of logistic regressions. A final regression evaluated the combined contribution of these variables. From among patients who were impaired before training, 43% reached normal levels of performance. Measures of attention, immediate verbal memory, hostility, and latency between last training and assessment were retained in the final step of the regression, resulting in 83% classification accuracy. Findings suggest that in addition to cognitive factors, motivational and training variables also significantly affect remediation outcomes.

Adult↗

PubMed2004

Durability of cognitive remediation training in schizophrenia: performance on two memory tasks at 6-month and 12-month follow-up.

Patients with schizophrenia have consistently been found to exhibit cognitive deficits, particularly in memory, which have been suggested to mediate functional outcomes. Several recent reviews of cognitive retraining have concluded that these deficits respond to training, although the sustainability of cognitive improvement following completion of training has not been adequately evaluated. Most studies had small samples and very short follow-up periods. As part of a larger study, we examined performance on two memory tasks in two groups of participants: those who received computerized cognitive remediation training in addition to work therapy (n=45), vs. those who only received work therapy (n=49). Computerized cognitive remediation included hierarchical training on a computerized digit span task and a computerized words serial position task. Assessments using the same computerized tasks were made at three time points: baseline, end of active intervention, and 6-month follow-up. Compared to the active control condition (work therapy only), the group receiving computerized cognitive remediation in addition to work therapy showed significantly greater improvements on the trained digit span task following training. These improvements were maintained at the 6-month follow-up. There were no significant group differences on the word serial position task at any time point. Results indicate that computerized training can lead to sustained improvements on some, but not all, training tasks.

Adult↗

PubMed2004

Coping style in schizophrenia: associations with neurocognitive deficits and personality.

It is widely recognized that persons with schizophrenia tend to cope with stress in a relatively avoidant and ineffectual manner. Less is understood, however, about the factors that affect coping style in schizophrenia. To determine the extent to which various neurocognitive deficits and personality dimensions are related to coping style in schizophrenia, measures of visual memory, verbal memory, executive function, neuroticism, and extroversion were correlated with concurrent self-reports of preference for a range of active and avoidant coping strategies. Participants were 71 persons with schizophrenia spectrum disorders enrolled in outpatient psychiatric care. Stepwise multiple regressions indicated that neurocognition and personality were independently related to coping style. Specifically, higher levels of various forms of neurocognitive impairment and neuroticism predicted greater reliance on passive avoidant strategies and reduced reliance on active problem solving. Higher levels of extroversion were related to greater social support seeking. Implications for understanding the genesis of psychosocial dysfunction and for the development of rehabilitative interventions are discussed.

Adaptation, Psychological↗

PubMed2004

Theory of mind performance in schizophrenia: diagnostic, symptom, and neuropsychological correlates.

The purpose of this study was to explore the relationship between Theory of Mind (ToM) performance and schizophrenia subtype, symptom, and neuropsychological variables. One hundred twenty-eight stable outpatients with schizophrenia or schizoaffective disorder were assessed during the intake phase of a vocational and cognitive rehabilitation study. Results indicate that ToM performance differed significantly by schizophrenia diagnosis, with people diagnosed with disorganized schizophrenia performing the most poorly. Theory of Mind performance was also significantly correlated with measures of thought disorder and verbal memory. Regression analysis revealed that thought disorder and verbal memory measures explained 30% of the variance in ToM scores. Findings suggest that there is theory of mind variance in the schizophrenia population and theory of mind is strongly related to thought disorder, verbal memory, and cognitive disorganization. Contrary to previous reports, ToM was not related to measures of paranoia.

Adult↗

PubMed2003

Insight in schizophrenia: associations with executive function and coping style.

It has been suggested that lack of awareness of illness in schizophrenia may result from deficits in executive function and/or an avoidant style of coping. To examine this question, 132 persons with schizophrenia spectrum disorders were rated as either "aware," "partially unaware" or "unaware" of: (a) their illness, (b) need for treatment and (c) consequences of disorder on the abbreviated Scale to Assess Unawareness of Mental Disorder. We next compared the performance of the aware, partially unaware and unaware groups on the "escape-avoidance" and "positive reappraisal" subtests of the Ways of Coping Questionnaire and on two tests of executive function: the Letter Number Sequencing Subtest of the WAIS III and Wisconsin Card Sorting Test. MANCOVA followed by ANCOVA and planned comparisons, controlling for age indicated that the participants who were unaware of symptoms, treatment need and consequences generally performed more poorly than the aware groups on tests of executive function. Participants unaware of symptoms also had a greater preference for positive reappraisal than aware or partially unaware participants. The participants unaware of the consequences of disorder endorsed a greater preference for escape-avoidance than the partially unaware participants. Implications for understanding the etiology of lack of awareness in schizophrenia are discussed.

Adaptation, Psychological↗

PubMed2002

Insight and work performance in schizophrenia.

Research has linked impaired insight in schizophrenia to poorer medication compliance and poorer treatment outcome. The current study attempts to replicate previous findings that impaired insight is related to deficits in work function. To examine this question, 121 participants with schizophrenia or schizoaffective disorder enrolled in vocational rehabilitation were classified as having unimpaired (N = 65), or impaired (N = 56) insight. Next, participants were assigned a work placement and their work performance assessed on the third, fifth, and seventh weeks of work by using the Work Behavior Inventory. Among the 85 participants who completed these weeks of work, a multivariate analysis of variance and subsequent analysis of variance showed participants with impaired insight had significantly poorer ratings of work quality, work habits, cooperativeness, and personal presentation. When measures of global intelligence and executive function were entered as covariates in individual analysis of covariance, groups differed on measures of cooperativeness and personal presentation. Implications for rehabilitation are discussed.

Adult↗

PubMed2002

Association of obsessions and compulsions in schizophrenia with neurocognition and negative symptoms.

It is unclear whether obsessions and compulsions in schizophrenia spectrum disorders are associated with a unique pattern of symptoms and deficits. Accordingly, the present study compared symptom levels and neurocognitive function of participants with schizophrenia or schizoaffective disorder with (n=11) and without (n=52) significant obsessive-compulsive symptoms. Analyses of variance revealed that the obsessive-compulsive group performed more poorly on measures of executive function and vigilance and had higher levels of negative and emotional discomfort symptoms. Unexpectedly, the obsessive-compulsive group also demonstrated superior performance on a measure of visual memory. The implications of these clinical correlates of obsessive-compulsive phenomena in schizophrenia spectrum disorders are discussed.

Adult↗

PubMedDate not supplied

The Indianapolis Vocational Intervention Program: a cognitive behavioral approach to addressing rehabilitation issues in schizophrenia.

Despite wishing to return to productive activity, many individuals with schizophrenia enter rehabilitation with severe doubts about their abilities. Negative beliefs in schizophrenia have been linked with poorer employment outcome. Accordingly, in this paper, we describe efforts to synthesize vocational and cognitive behavior therapy interventions into a 6-month manualized program to assist persons with schizophrenia spectrum disorders overcome negative beliefs and meet vocational goals. This program, the Indianapolis Vocational Intervention Program (IVIP), includes weekly group and individual interventions and is intended as an adjunct to work therapy programs. The IVIP was initially developed over a year of working with 20 participants with Structured Clinical Interview for the Diagnostic and Statistical Manual-I (SCID-I) confirmed diagnoses of schizophrenia or schizoaffective disorder who were actively engaged in 20 hours per week of work activity. For this paper, we explain the development of the treatment manual and the group and individual interventions and present case examples that illustrate how persons with severe mental illness might utilize the manualized intervention.

Adult↗

PubMedDate not supplied

Enhanced cognitive-behavioral therapy for vocational rehabilitation in schizophrenia: Effects on hope and work.

To address the effects of dysfunctional cognitions on vocational outcome of people with schizophrenia spectrum disorders, we developed the Indianapolis Vocational Intervention Program (IVIP), a cognitive-behavioral program of group and individual interventions. Fifty participants with schizophrenia or schizoaffective disorder were offered 6-month work placements and randomized to receive IVIP (n = 25) or standard support services (n = 25). Hours worked were measured weekly, and work performance was assessed biweekly with the use of the Work Behavior Inventory. Hope and self-esteem were assessed at baseline and at 5 months with the Beck Hopelessness Scale and the Rosenberg Self-Esteem Schedule. Analysis of variance (ANOVA) revealed that the IVIP group worked significantly more weeks and had better average work performance than the standard support group. Repeated measures ANOVA of baseline and follow-up scores indicated that the IVIP group sustained baseline levels of hope and self-esteem through follow-up, while the standard support group experienced declines. Results provide initial evidence of the effectiveness of the IVIP.

Adult↗

PubMedDate not supplied

Neurocognitive enhancement therapy with work therapy: Productivity outcomes at 6- and 12-month follow-ups.

Neurocognitive enhancement therapy (NET), which involves computerized cognitive training and other methods, has been shown to improve working memory and executive function in schizophrenia. In the present study, 145 outpatients with diagnoses of schizophrenia or schizoaffective disorder recruited from a Department of Veterans Affairs mental hygiene clinic and from a community mental health center were ran domized to 6 months of paid work therapy (WT) or to NET+WT. Mixed random effects analyses revealed significant increase in hours worked and money earned over time for both conditions (p < 0.0001). NET+WT worked more hours than WT (p < 0.03), with differences emerging after rehabilitation. Responders to NET+WT worked the most during follow-up and tended to have more competitive-wage employment. Results indicate that work outcomes were enhanced by NET training. Effects were greatest for NET responders. Findings support the efficacy of cognitive training when it is integrated into broader rehabilitation programs.

Adult↗