Relationship between executive functions and productivity outcomes following stroke

Divergent thinking as a predictor of life skills in patients with schizophrenia: Evidence from the modified Tinkertoy Test

Aim

Patients with schizophrenia often exhibit poor life skills, posing significant clinical challenges. Life skills comprise cognitive functions crucial for planning daily activities, including divergent thinking. However, the cognitive deficits contributing to these diminished skills among patients with schizophrenia are underexplored. This study introduces a modified Tinkertoy Test (m-TTT) to investigate the correlation between life skills, divergent thinking, and psychological assessment tools in patients with schizophrenia.

Methods

Fifty-two patients with schizophrenia, alongside a control group, matched for sex, age, and education, were evaluated using psychological assessment tools. For the patient group, the Life Skills Profile (LSP) and Positive and Negative Syndrome Scale were administered to measure functional abilities and psychiatric symptoms, respectively. Additionally, duration of disease and antipsychotic daily dosage levels were assessed exclusively in the patient group. Both groups were evaluated with the m-TTT, Idea Fluency Test (IFT), Design Fluency Test (DFT), and Brief Assessment of Cognition in Schizophrenia (BACS) to comprehensively assess cognitive functions. A stepwise multiple regression model was conducted to identify significant correlates of LSP total score among the patient group.

Results

The schizophrenia group scored notably lower than the neurotypical controls on the m-TTT, IFT, DFT, and BACS. Our stepwise multiple regression analysis highlighted that the LSP total score was significantly correlated with the total m-TTT score and presence of negative symptoms.

Conclusion

Divergent thinking could be a crucial factor in the life skills of individuals with schizophrenia. Rehabilitation programs based on this cognitive function might enhance their daily living capabilities.

The contribution of executive functions to the process of return to work after brain injury: A systematic review

Acquired brain injury (ABI) is a worldwide public health issue for its high prevalence rate and the disability it produces. The consequences of ABI, including cognitive deficits, may impact return to work. This review focuses on the association between executive functions (EFs) and return to work after ABI. A systematic review of the literature between 1998 and 2023 was conducted following PRISMA guidelines. The articles were retrieved from the Pubmed, Medline and Web of Science databases. A total of 49 studies were finally selected. Impairments of EF were consistently shown to have a negative impact on return to work after an ABI. There is evidence that specific executive functions and neurobehavioral variables may affect return to work Studies showed a significant theoretical and methodological heterogeneity, representing an important limitation to understand the relation between EFs and work. There is a robust association between EFs and return to work after brain injury. Findings in this systematic review raise the need for further research on the role of specific EF profiles in the process of returning to work after brain damage.

Comparing the Oxford Digital Multiple Errands Test (OxMET) to a real-life version: Convergence, feasibility, and acceptability

We aimed to assess the convergence, feasibility, and acceptability of the Oxford Digital Multiple Errands Test (OxMET) and the in-person Multiple Errands Test-Home version (MET-Home). Participants completed OxMET, MET-Home, Montreal Cognitive Assessment (MoCA), and questionnaires on activities of daily living, depression, technology usage, mobility, and disability. Forty-eight stroke survivors (mean age 69.61, 41.67% female, and average 16.5 months post-stroke) and 50 controls (mean age 71.46, 56.00% female) took part. No performance differences were found for healthy and stroke participants for MET-Home, and only found below p = .05 for OxMET but not below the corrected p = .006. Convergent validity was found between MET-Home and OxMET metrics (most r ≥ .30, p < .006). MET-Home accuracy was related to age (B = -.04, p = .03), sex (B = -.98, p = .03), disability (B = -0.63, p = .04), and MoCA (B = .26, p < .001), whereas OxMET accuracy was predicted by MoCA score (B = .40, p < .001). Feedback indicated that the OxMET was easy and fun and more acceptable than the MET-Home. The MET-Home was more stressful and interesting. The MET tasks demonstrated good convergent validity, with the OxMET digital administration providing a more feasible, inclusive, and acceptable assessment, especially to people with mobility restrictions and more severe stroke.

Association between the executive dysfunction and balance function in patients with stroke

INTRODUCTION

A previous study has shown an association between executive dysfunction (ED) and balance function in patients with stroke. However, it is unclear what factors mediate the association between ED and balance function. Therefore, the aim of this study was to investigate the association between ED and balance function and to identify mediating factors using mediation analysis.

METHODS

This study had a cross-sectional design. The study included 107 patients with stroke. This study was divided into two groups (ED and non-ED) using trail making test (TMT) part B. Two groups were compared for balance function (timed up and go test [TUGT] and Berg balance scale [BBS]) and other variables using paired test. In addition, partial correlation analysis with age, cognitive function as a control factor, and mediation analysis were also performed.

RESULTS

The ED group (N = 55) had significantly lower TUGT and BBS scores than the non-ED group (N = 52). TMT part B correlated with TUGT (ρ = 0.41), BBS (ρ = -0.33), and Brunnstrom recovery stage (BRS) lower limb (ρ = -0.22). The TUGT model of mediation analysis showed a significant indirect effect as a result of mediation of the BRS lower limb between TMT part B and TUGT. The BBS model showed a significant indirect effect as a result of mediation of the activities of daily living (ADL) motor function between TMT part B and BBS.

CONCLUSIONS

ED and balance function were associated, and the degree of paralysis and ADL motor function were associated with them in patients with stroke.

Intervention and assessment of executive dysfunction in patients with stroke: A scoping review

Rehabilitation methods for executive dysfunction were focused on cognitive rehabilitation in patients with stroke and traumatic brain injury. However, no reviews have focused on the various rehabilitation methods and assessment of executive function in patients with only stroke and included various study designs. This study aimed to identify various interventions and assessments in patients with stroke and executive dysfunction via a scoping review. We searched for articles using the PubMed, Web of Science, and CINAHL databases. Two reviewers independently screened the articles based on the inclusion and exclusion criteria using the title, abstract, and full text. We subsequently determined the study design, sample size, time since stroke, intervention, and assessment. We extracted 1131 articles, of which 27 articles were selected. The study designs were randomized controlled trials (81.5%), pilot studies (11.1%), and feasibility studies (7.4%), with a total of 599 participants. Interventions varied from cognitive training (22.2%), virtual reality (22.2%), noninvasive brain stimulation (14.8%), and dual-task training (11.1%), with consistent results. The assessments used were the Trail Making Test Part B (70.4%), Stroop Color and Word Test (44.4%), Digit Symbol Test, Frontal Assessment Battery, and Tower of London test (11.1%). In conclusion, this scoping review provided various interventions and assessments in patients with stroke with executive dysfunction.

Exploring Pragmatic Deficits in Relation to Theory of Mind and Executive Functions: Evidence from Individuals with Right Hemisphere Stroke

Research investigating pragmatic deficits in individuals with right hemisphere damage focuses on identifying the potential mechanisms responsible for the nature of these impairments. Nonetheless, the presumed shared cognitive mechanisms that could account for these deficits have not yet been established through data-based evidence from lesion studies. This study aimed to examine the co-occurrence of pragmatic language deficits, Theory of Mind impairments, and executive functions while also exploring their associations with brain lesion sites. Twenty-five patients suffering from unilateral right hemisphere stroke and thirty-seven healthy participants were recruited for this study. The two groups were tested in pragmatics, Theory of Mind, and executive function tasks. Structural imaging data were also obtained for the identification of the lesion sites. The findings of this study suggest a potential convergence among the three aforementioned cognitive mechanisms. Moreover, we postulate a hypothesis for a neural circuitry for communication impairments observed in individuals with right hemisphere damage.

Translation, cross-cultural adaptation and validation of the 10-item Weekly Calendar Planning Activity in Spanish-speaking ABI patients: a multicenter study

We present the process of translation, adaptation, and validation in the Spanish context of the 10-item version of the Weekly Calendar Planning Activity (WCPA-10), a performance-based measure of cognitive instrumental activities of daily living (C-IADL). The study consisted of two phases: I) translation/cultural adaptation of the WCPA, conducted by professional bilingual translators, a panel of experts, and a pilot study, and II) validation in a sample of 42 acquired brain injury patients (ABI) and 42 healthy participants (HC). WCPA primary outcomes showed expected convergent/discriminant validity patterns with socio-demographical and clinical variables and cognitive processes identifying those WCPA outcomes that best predicted executive and memory deficits measured with a battery of traditional neuropsychological tests. In addition, performance on the WCPA was a significant predictor of everyday functioning over variables such as socio-demographics or global cognition when measured with traditional tests. External validity was established by the WCPA's ability to identify everyday cognitive deficits in ABI patients compared to HC, even in those with subtle cognitive impairment based on neuropsychological tests. The Spanish WCPA-10 seems an appropriate and sensitive assessment tool to identify cognitive-functional impairment in ABI-patients, even those with subtle cognitive impairment. The results also highlight the relevance of this kind of test, as they indicate a better prediction of patients' real-world functioning than traditional neuropsychological tests.

Feasibility and Acceptability of a Remotely Delivered Executive Function Intervention That Combines Computerized Cognitive Training and Metacognitive Strategy Training in Chronic Stroke

Executive dysfunction after stroke is associated with limitations in daily activities and disability. Existing interventions for executive dysfunction show inconsistent transfer to everyday activities and require frequent clinic visits that can be difficult for patients with chronic mobility challenges to access. To address this barrier, we developed a telehealth-based executive function intervention that combines computerized cognitive training and metacognitive strategy. The goal of this study was to describe intervention development and to provide preliminary evidence of feasibility and acceptability in three individuals who completed the treatment protocol. The three study participants were living in the community and had experienced a stroke >6 months prior. We assessed satisfaction (Client Satisfaction Questionnaire-8 [CSQ-8]), credibility (Credibility and Expectancy Questionnaire), and feasibility (percent of sessions completed). All three subjects rated the treatment in the highest satisfaction category on the CSQ-8, found the treatment to be credible, and expected improvement. Participants completed a median of 96% of computerized cognitive training sessions and 100% of telehealth-delivered metacognitive strategy training sessions. Individuals with chronic stroke may find a remotely delivered intervention that combines computerized cognitive training and metacognitive strategy training to be feasible and acceptable. Further evaluation with larger samples in controlled trials is warranted.

Walking Ability Associated with Executive Dysfunction in Patients with Stroke: A Cross-Sectional Study

Previous studies have shown an association between executive dysfunction and walking ability. However, it remains unclear whether the degree of executive dysfunction is associated with differences in walking ability in patients with stroke. The aim of this study was to investigate whether there are differences in walking ability according to executive dysfunction in patients with stroke. A total of 51 patients with stroke were enrolled in this study. Executive function was measured using the Trail Making Test (TMT) Part B, and walking ability was assessed using the 10 m walk test and the Timed Up and Go Test (TUGT). Cluster analysis was performed using the TMT Part B and compared within each cluster. TMT Part B was categorized into three groups (cluster 1: n = 20, cluster 2: n = 24, and cluster 3: n = 7). Cluster 1 was significantly better than clusters 2 and 3, and cluster 2 was significantly better than cluster 3. The 10 m walk time and TUGT of cluster 1 were significantly better than those of cluster 3. However, the 10 m walk time and TUGT of clusters 1 and 2 did not differ significantly. In conclusion, these findings may indicate differences in walking ability according to executive dysfunction.

Assessing upper extremity-cognitive dual-task ability in neurological populations: A systematic review

BACKGROUND

Dual-task involves performing cognitive and motor tasks together, which requires executive functions that may be impaired in individuals with neurological conditions. Therefore, it is important to accurately assess executive functions to plan a therapeutic intervention.

OBJECTIVE

To characterize the use of upper extremity-cognitive dual-task assessment and to describe variables correlated with dual-task ability.

METHODS

An electronic search of databases (MEDLINE, EMBASE, CINAHL, and PsycINFO) was carried out using a combination of the following terms: upper-extremity, dual/concurrent task, and cognitive/motor tasks. Two reviewers independently completed data extraction and assessed study quality.

RESULTS

1,946 studies were identified; 25 studies met the inclusion criteria. The purpose of using an upper extremity-cognitive dual-task assessment varied between studies as well as the upper extremity motor tasks used: pegboard (N = 14), arm curl (N = 9), finger-tapping (N = 3), and reaching (N = 1) tests. Dual-task ability was reported as the motor-cognitive interference (N = 15) and as motor cost (N = 12). Dual-task ability was correlated to cognition, brain activity, and daily function, and was significantly different between healthy and neurological individuals.

CONCLUSION

Upper extremity cognitive dual-task paradigm is gaining popularity in clinical research, but lacks standardized tools, testing procedures, and calculations. A structured assessment procedure is needed for clinical use and future research.

Associations between cognition and employment outcomes after epilepsy surgery

OBJECTIVES

Previous studies have shown that younger age, higher education, and seizure freedom after epilepsy surgery are associated with employment. However, very few studies have investigated associations with cognition and employment status in epilepsy surgery patients.

METHODS

This retrospective study consists of 46 adult patients, who underwent resective epilepsy surgery in the Helsinki University Hospital between 2010 and 2018 and who had been assessed by a neuropsychologist prior to surgery and 6 months after surgery using a systematic test battery. In addition to neuropsychological evaluation, neurologists assessed the patients prior to surgery and followed up the patients up to 24 months after the surgery and evaluated work status of the patients. Logistic regression models were used to assess the effects of cognition on changes in employment status, while controlling for age and education.

RESULTS

Out of the 46 patients 38 (82.6%) were seizure free and 7 (15.2%) had their seizures reduced 2 years postsurgically. From prior to surgery to 2 years postsurgery, use of antiseizure medication was reduced in most of the patients, mean reduction of the dosage being 26.9%. Employment status improved in 10 (21.7%) patients, remained unchanged in 27 (58.7%) and worsened in 3 (6.5%). An additional 6 patients were already not working prior to surgery. Subsequent analyses are based on the subsample of 37 patients whose employment status improved or remained unchanged. Mistakes in executive function tasks (p = 0.048) and working memory performance (p = 0.020) differentiated between the group whose employment status remained similar and those who were able to improve their employment status. Epilepsy surgery outcome or changes in antiseizure medication (ASM) use were not associated with changes in employment status.

CONCLUSIONS

In the subsample of 37 patients, errors in executive function tasks and poorer working memory differentiated patients whose employment status did not change from those patients who could improve their employment status. Problems in executive function and working memory tasks might hinder performance in a complex work environment. When assessing the risks and opportunities in returning to work after surgery, difficulties in working memory and executive function performance should be taken into consideration as they may predispose the patient to challenges at work.

Common Symptoms of Mild Traumatic Brain Injury and Work Functioning of Active-Duty Service Members with a History of Deployment

This study used data from the Military Health System Data Repository to examine the association between mild traumatic brain injuries (mTBI) and work functioning such as work duty limitations, hospital emergency room visits and inpatient admissions for active-duty service members (ADSMs). Further, this study assessed the role that common symptoms of mTBI play in work functioning. Multivariate results showed that having a mTBI diagnosis is not a major factor that results in being "released with work duty limitations". However, findings from these regression models also showed that the interaction of mTBI with cognitive and linguistic symptoms resulted in odds of 3.63 (CI: 1.40-9.36, p < 0.01) for being "released with work duty limitations" and odds of 4.98 (CI: 1.16-21.39, p < 0.05) for having any emergency department visits compared to those with no diagnosis of mTBI and none of these symptoms. Additionally, the interaction of mTBI with sleep disturbance and chronic pain showed odds of 2.72 (CI: 1.31-5.65, p < 0.01) and odds of 11.56 (CI: 2.65-50.44, p < 0.01) for being "released with work duty limitations" compared to those with no diagnosis of TBI and none of these symptoms, respectively. Further research is needed to investigate the association between mTBI and duration of time off work to provide a comprehensive understanding of the effect of mTBI on work functioning in the Military Health System.

Using Multicontext Approach to Improve Instrumental Activities of Daily Living Performance after a Stroke: A Case Report

Cognitive deficits constitute one of the greatest challenges for independence achievement after a stroke. This paper provides an in depth view of the application of the Multicontext approach within routine Occupational Therapy care for a 41-year-old who demonstrated limited participation in activities of daily living as a consequence of executive function impairments and limited self-awareness. Results indicated improved online self-awareness, strategy use and functional performance, however, no changes were observed on a standard Awareness Questionnaire. This suggests that awareness within activities may be more important in contributing to effective strategy use and functional performance compared to verbal acknowledgment in an interview. Results also support the feasibility of the Multicontext approach within inpatient settings in Argentina.

Poststroke Cognitive Impairment Negatively Impacts Activity and Participation Outcomes: A Systematic Review and Meta-Analysis

This systematic review and meta-analysis aimed to investigate whether cognition is associated with activity and participation outcomes in adult stroke survivors. Five databases were systematically searched for studies investigating the relationship between general- and domain-specific cognition and longer-term (>3 months) basic activities of daily living (ADL), instrumental ADLs, and participation outcomes. Eligibility for inclusion, data extraction, and study quality was evaluated by 2 reviewers using a standardized protocol. Effect sizes (r) were estimated using a random-effects model. Sixty-two publications were retained for review, comprising 7817 stroke survivors (median age 63.57 years, range:18-96 years). Median length of follow-up was 12 months (range: 3 months-11 years). Cognition (all domains combined) demonstrated a significant medium association with all 3 functional outcomes combined, r=0.37 (95% CI, 0.33-0.41), P<0.001. Moderator analyses revealed these effects persisted regardless of study quality, order in which outcomes were collected (sequential versus concurrent), age, sample size, or follow-up period. Small to medium associations were also identified between each individual cognitive domain and the separate ADL, instrumental ADL, and participation outcomes. In conclusion, poststroke cognitive impairment is associated with early and enduring activity limitations and participation restrictions, and the association is robust to study design factors, such as sample size, participant age, follow-up period, or study quality. Cognitive assessment early poststroke is recommended to facilitate early detection of disability, prediction of functional outcomes, and to inform tailored rehabilitation therapies.

Managerial features and outcome in neonatal intensive care units: results from a cluster analysis

Background

Healthcare organisations differ in performance even if they are located in the same country or region. Suitable managerial practices and organisational processes can lead to better health outcomes. As a result, hospitals are constantly looking for managerial arrangements that can improve outcomes and keep costs down. This study aims to identify different managerial models in neonatal intensive care units (NICUs) and their impact on a large number of outcomes.

Methods

The research was conducted in Italy, within the SONAR project. SONAR’s aim was to identify the characteristics of NICUs, monitor outcomes and promote best practices. This study includes 51 of the 63 NICUs that took part in the SONAR project. Questionnaires on the activities and managerial features were administered to doctors and nurses working in NICUs. A total of 643 questionnaires were analysed from doctors and a total of 1601 from nurses. A cluster analysis was performed to identify managerial models of NICUs.

Results

Three managerial models emerged from cluster analysis: traditional, collaborative and individualistic. In the “traditional” model the doctor is above the nurse in the hierarchy, and the nurse therefore has exclusively operational autonomy. The “collaborative” model has as key elements professional specialisation and functional coordination. The “individualistic” model considers only individual professional skills and does not concern the organisational conditions necessary to generate organisational effectiveness.

The results also showed that there is an association between managerial model and neonatal outcomes. The collaborative model shows best results in almost all outcomes considered, and the traditional model has the worst. The individualistic model is in the middle, although its values are very close to those of traditional model.

Conclusions

Health management needs to assess NICU strategically in order to develop models to improve outcomes. This study provides insights for management useful for designing managerial characteristics of NICUs in order to achieve better results. NICUs characterised by a collaborative model in fact show better neonatal outcomes.

Telehealth in trauma: A scoping review

BACKGROUND

The purpose of this scoping review was to ascertain how 'telehealth' is utilised within health care, from pre hospital to admission, discharge and post discharge, with patients who have suffered major trauma.

METHODS

A scoping review of the literature published in English since 1980 was conducted using MEDLINE, Ovid EMBASE, PsychINFO, CINAHL, Austhealth, Cochrane Central Register of Controlled Trials (CENTRAL; Cochrane library) and Web of Science MEDLINE and MEBASE to identify relevant studies.

RESULTS

We included 77 eligible studies with both randomised controlled trial and cohort design methodology. A variety of trauma was included such as traumatic brain injuries (n = 52; 67.5%), spinal cord injury (n = 14; 18.2%) and multi-trauma (n = 9; 11.7%) to both adult (n = 38) and paediatric (n = 32) participants. Telehealth is used in pre-hospital and acute-care settings (n = 11; 14.3%) to facilitate assessment, and in rehabilitation and follow-up (n = 61; 79.2%) to deliver therapy. Effects on health were reported the most (n = 46), with no negative outcomes. The feasibility of telehealth as a delivery mode was established, but coordination and technical issues are barriers to use. Overall, both patients and clinicians were satisfied using this mode of delivery.

CONCLUSION

This review demonstrates how telehealth is utilised across a spectrum of patients with traumatic injuries and to facilitate delivery of therapy, specialist consultations and assessments, with many studies reporting improvements to health. There is a paucity of high-quality rigorous research, which makes replication of findings and uptake of the intervention problematic. Future telehealth and trauma research should focus on the quality and reproducibility of telehealth interventions and the economic feasibility of using this platform to deliver trauma care.

A Meta-Analysis of Neuropsychological Predictors of Outcome Following Stroke and Other Non-Traumatic Acquired Brain Injuries in Adults

A number of cognitive abilities have been reported to predict outcome following a non-traumatic acquired brain injury (ABI) in adults. However, the results are inconsistent. Furthermore, the unique and combined capacity of these cognitive abilities to predict ABI outcome has not been evaluated. Consequently, we employed meta-analysis and multiple regression to evaluate the capacity of various neuropsychological domains to predict two separate outcome variables in adults: (1) activities of daily living; and (2) quality of life. Based on the activities of daily living meta-analysis (N = 2384), we estimated the following significant bivariate effects: memory (r = .31, 95% CI: .20/.41]), language (r = .33, 95% CI:.26/.40), attention (r = .38, 95% CI: .30/.46]), executive functions (r = .29, 95% CI: .19/.39]), and visuospatial abilities (r = .41, 95% CI: .34/ .48). Based on the quality of life meta-analysis (N = 1037), we estimated the following significant bivariate effects: memory (r = .12, 95% CI: .03/.20]), language (r = .19, 95% CI: .06/ .32), attention (r = .30, 95% CI: .16/.44]), executive functions (r = .24, 95% CI: .12/.37) and visuospatial/constructional abilities (r = .30, 95% CI: .14/.46). Meta-analytic structural equation modelling (metaSEM) identified two significant, unique predictors of activities of daily living, attention and visuospatial abilities, and the model accounted for 21% of the variance (multiple R² = .21, 95%CI: .16/.26). For the corresponding quality of life metaSEM, no statistically significant unique predictors were identified, however, a significant multiple correlation was observed, multiple R² = .11 (95%CI: 04/.18). We conclude that practitioners may be able to predict, with some degree of accuracy, functional outcome following a stroke and other non-traumatic ABI in adults. We also provide some critical commentary on the nature and quality of the measures used in this area of research to represent the cognitive dimensions of interest.

Identifying clinicians' priorities for the implementation of best practices in cognitive rehabilitation post-acquired brain injury

PURPOSE

To identify clinicians' perceptions of current levels of implementation of cognitive rehabilitation best practices, as well as individual and consensual group priorities for implementing cognitive rehabilitation interventions as part of a multi-site integrated knowledge translation initiative.

METHOD

A two-step consensus-building methodology was used, that is the Technique for Research of Information by Animation of a Group of Experts (TRIAGE), including a cross-sectional electronic survey followed by consensual in-person group discussions to identify implementation priorities from a list of evidence-based practices for cognitive rehabilitation following traumatic brain injury and stroke. Thirty-eight professionals from three rehabilitation teams (n = 9, 13 and 16) participated, including neuropsychologists, occupational therapists, speech-language pathologists, educators, clinical coordinators and program managers. Descriptive statistics were used to document the perceived levels of implementation as well as individual and consensual group priorities.

RESULTS

Most of the best practices (81-100%) were perceived as at least partially implemented by a minimum of 50% of the participants but only 20-25% of the practices were considered fully implemented. Findings suggest that current practices are mostly consistent with general cognitive rehabilitation principles suggested in guidelines but that further efforts are needed to support the application of specific cognitive rehabilitation strategies and interventions. Executive function and self-awareness retraining, as well as interventions promoting the generalization of skills, were among the highest implementation priorities. Consensual in-person group discussions, included as part of the TRIAGE process, also helped to define and operationalize these best practices into more specific intervention components according to the teams' needs and priorities.

CONCLUSIONS

TRIAGE consensus-building methodology can be used to engage stakeholders and support clinicians' decision-making regarding the identification of implementation priorities in cognitive rehabilitation post-ABI in order to tailor the implementation process to local needs.IMPLICATIONS FOR REHABILITATIONThe Technique for Research of Information by Animation of a Group of Experts (TRIAGE) can be used to support clinicians' decision-making regarding the identification of implementation priorities in cognitive rehabilitation post-ABI.The combination of individual consultations followed by consensual in-person group discussions, as part of the TRIAGE process, may help clinicians in defining and operationalizing best practices into more specific intervention components to implement.Effective implementation strategies are needed to support the use of specific cognitive rehabilitation interventions in prioritized areas, such as executive function and self-awareness retraining, as well as generalization of skills.Some differences in clinicians' perceived priorities point up the importance of tailoring implementation to local needs and contexts from the early stages in the process.

Depression, apathy and impaired self-awareness following severe traumatic brain injury: a preliminary investigation

Primary Objective: The primary aim of this study was to determine the frequency of severe impaired self-awareness (ISA) in patients with severe traumatic brain injury (TBI) and the correlates of selected clinical, neuropsychiatric and cognitive variables. The secondary aim of the study was to assess depression and apathy on the basis of their level of self-awareness. Methods: Thirty patients with severe TBI and 30 demographically matched healthy control subjects (HCs) were compared on measures of ISA, depression, anxiety, alexithymia, neuropsychiatric symptoms and cognitive flexibility. Results: Twenty percent of the patients demonstrated severe ISA. Severe post-acute ISA was associated with more severe cognitive inflexibility, despite the absence of differences in TBI severity, as evidenced by a Glasgow Coma Scale (GCS) score lower than 9 in all cases in the acute phase. Patients with severe ISA showed lower levels of depression and anxiety but tended to show more apathy and to have greater difficulty describing their emotional state than patients with severe TBI who showed minimal or no disturbance in self-awareness. Conclusion: These findings support the general hypothesis that severe ISA following severe TBI is typically not associated with depression and anxiety, but rather with apathy and cognitive inflexibility.

Cognitive, Emotional, and Physical Functioning as Predictors of Paid Employment in People With Stroke, Traumatic Brain Injury, and Spinal Cord Injury

OBJECTIVE

Our objective was to examine demographic, cognitive, emotional, and physical factors that predict return to paid employment for people after neurological injury.

METHOD

Four hundred eighty adults with stroke (n = 149), traumatic brain injury (n = 155), and spinal cord injury (n = 176) completed an occupational outcome questionnaire and physical, emotional, and cognitive assessments at three rehabilitation facilities.

RESULTS

Odds of employment were predicted by being married or partnered, having more education, requiring fewer prompts for task sequencing, and having higher inhibitory control (but were not predicted by specific type of injury). Participants who returned to work within 3 mo were more likely to work with the same employer and to take a full-time position than those who returned later.

CONCLUSION

Executive functioning, in particular sequencing and inhibitory control, strongly predicts employment and highlights the importance of cognitive strategy training during occupational therapy with people who have sustained neurological injuries.

Assessment of executive function using the Tinkertoy test

The Tinkertoy test (TTT) has often been used to assess executive function. Despite its clinical importance, there are few published normative data for it. Thus, the primary aim of this study was to fill this gap. Moreover, as there exists a sex difference in many cognitive abilities and neuropsychological tests, a secondary aim was to examine whether sex influences TTT performance. We administered the TTT to 25 healthy men and 25 healthy women whose average age was 28 years. Performances were scored based upon Lezak's (1982) original TTT criteria. On average, our participants used 43 pieces to complete their construction (SD=8), with a range of 21-50, and their complexity scores ranged from 7 to 12, with a mean score of 9.68 (SD=1.35). Overall performance did not differ based on sex; yet, when examining individual scoring criteria, we found that men scored significantly higher on the symmetry measure. Efforts towards the development of adequate normative data for the TTT and different tests of executive functioning are crucial to neuropsychologists' and other healthcare providers' ability to reliably diagnose and treat disorders of cognition that affect executive function. The present data go some way towards enhancing the utility of the TTT.

Return to work after young stroke: A systematic review

Background The incidence of stroke in young adults is increasing. While many young survivors are able to achieve a good physical recovery, subtle dysfunction in other domains, such as cognition, often persists, and could affect return to work. However, reported estimates of return to work and factors affecting vocational outcome post-stroke vary greatly. Aims The aims of this systematic review were to determine the frequency of return to work at different time points after stroke and identify predictors of return to work. Summary of review Two electronic databases (Medline and Embase) were systematically searched for articles according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. A total of 6473 records were screened, 68 were assessed for eligibility, and 29 met all inclusion criteria (working-age adults with stroke, return to work evaluated as an outcome, follow-up duration reported, and publication within the past 20 years). Return to work increased with time, with median frequency increasing from 41% between 0 and 6 months, 53% at 1 year, 56% at 1.5 years to 66% between 2 and 4 years post-stroke. Greater independence in activities of daily living, fewer neurological deficits, and better cognitive ability were the most common predictors of return to work. Conclusion This review highlights the need to examine return to work in relation to time from stroke and assess cognition in working age and young stroke survivors. The full range of factors affecting return to work has not yet been explored and further evaluations of return to work interventions are warranted.

Cardiorespiratory fitness and cognitive functioning following short-term interventions in chronic stroke survivors with cognitive impairment: a pilot study

This study, a quasi-experimental, one-group pretest-post-test design, evaluated the effects on cognitive functioning and cardiorespiratory fitness of 8-week interventions (aerobic exercise alone and aerobic exercise and cognitive training combined) in patients with chronic stroke and cognitive impairment living in the community (participants: n=14, 61.93±9.90 years old, 51.50±38.22 months after stroke, n=7 per intervention group). Cognitive functions and cardiorespiratory fitness were evaluated before and after intervention, and at a 3-month follow-up visit (episodic memory: revised-Hopkins Verbal Learning Test; working memory: Brown-Peterson paradigm; attention omission and commission errors: Continuous Performance Test; cardiorespiratory fitness: peak oxygen uptake during a symptom-limited, graded exercise test performed on a semirecumbent ergometer). Friedman's two-way analysis of variance by ranks evaluated differences in score distributions related to time (for the two groups combined). Post-hoc testing was adjusted for multiple comparisons. Compared with before the intervention, there was a significant reduction in attention errors immediately following the intervention (omission errors: 14.6±21.5 vs. 8±13.9, P=0.01; commission errors: 16.4±6.3 vs. 10.9±7.2, P=0.04), and in part at follow-up (omission errors on follow-up: 3.4±4.3, P=0.03; commission errors on follow-up: 13.2±7.6, P=0.42). These results suggest that attention may improve in chronic stroke survivors with cognitive impairment following short-term training that includes an aerobic component, without a change in cardiorespiratory fitness. Randomized-controlled studies are required to confirm these findings.

Association Between Metacognition and Mood Symptoms Poststroke

INTRODUCTION

The link between metacognition and mood has been well established, particularly in other conditions with psychological comorbidity, however, there is no evidence regarding this association in the area of stroke.

AIM

The aim of this study was to examine the association between metacognition, based on the Self-Regulatory Executive Function model, and mood symptoms in the acute phase after stroke.

METHODS

One hundred thirty patients were recruited to a prospective stroke study in Bahrain, and n = 64 were assessed for mood and cognition. A neuropsychological battery of cognitive assessments included the following measures: the Mini-Mental State Examination, the Trail Making Test (A+B), and the Metacognition Questionnaire 30 (MCQ-30) for metacognition. The Hospital Anxiety and Depression Scale assessed mood symptoms, and stroke severity was measured using the National Institute of Health Stroke Severity Scale.

RESULTS

Total MCQ-30 scores were significantly associated with both anxiety (r = .47, P = .001) and depression (r = .54, P <. 0001). The MCQ-30 subscales' cognitive confidence, cognitive self-consciousness, and uncontrollability/danger were the specific factors to be associated with mood symptoms (P < .01). Global cognition (r =.32, P < .01), but not executive function, was significantly associated with depression only. Metacognition remained a statistically significant correlate with depression (β = .42, P < .0001) and anxiety (β = .51, P < .0001) after adjusting for education and global cognition.

DISCUSSION

Metacognition is a better determinant of mood symptoms after stroke, especially in regions where illiteracy levels are high in older populations, in comparison to executive function and global cognition.

Prospective Memory After Stroke: A Scoping Review

The aim of this paper was to review the limited, but growing, literature on prospective memory (PM) following stroke using a scoping study methodology. Multiple databases were systematically searched and yielded 11 studies that were classified as observational (n = 7) or intervention studies (n = 4) and reviewed for quality. PM impairment after stroke was more commonly identified using behavioural measures compared to self-report measures. There were mixed findings regarding the extent and nature of PM impairment poststroke; however, more studies reported impairment for time-based PM, compared to both event- and activity-based PM. Studies examining rehabilitative techniques for PM resulted in mixed findings and were limited as most were case studies of poor methodological quality. Overall previous research in this area was limited as most studies were often underpowered due to small sample sizes, or used single-item measures which may not be robust enough to reliably measure PM impairment. Additionally, the methods used to measure PM were varied and many studies did not control for retrospective memory impairment, which could impact the results, as PM has both a retrospective (remembering both the action and when it needs to be completed) and prospective component (remembering to perform the action when appropriate). In conclusion, PM impairment is apparent poststroke, specifically for time-based PM. However, more research is needed to determine why PM impairment occurs, and how it can be improved.

What are the correlates of cognition and participation to return to work after first ever mild stroke?

BACKGROUND

The percentage of working age people with mild stroke has risen. Evidence indicates that even mild stroke impact cognition, executive functioning, and daily functioning, consequently affecting participation, quality of life (QoL) and return to work (RTW).

OBJECTIVES

(1) Compare cognition, participation and QoL between people 3 months post-mild stroke who RTW and those who did not; and (2) To determine the correlates of these variables to RTW of participants 3 months post-stroke.

METHODS

We visited at home 163 stroke survivors (117 men, 46 women) 3 months post-mild stroke ranging from 50 to 89 years. Participants who returned to work (n = 114) and those who did not (n = 49). Data collection at home included measures for cognitive status (MoCA), executive functions (EFPT, DEX), depression (GDS), participation (RNL), and QoL (SIS recovery).

RESULTS

Significant differences were found between RTW participants and those who did not RTW in measures of cognition, depression, participation and QoL (t = 2.36 to - 5.62, P < 0.022-0.001). No difference was found on age or gender. Stepwise regression showed that significant correlates of RTW were participation (RNL), executive functions (EFPT), and QoL (SIS recovery).

CONCLUSIONS

To enable RTW after mild stroke, participation, executive functions and QoL must be considered in planning interventions.

Comparison of two cognitive interventions for adults experiencing executive dysfunction post-stroke: a pilot study

Purpose This pilot partially randomised controlled trial compared the feasibility and preliminary efficacy of two promising interventions for persons with executive dysfunction post-stroke: (1) occupation-based strategy training using an adapted version of the Cognitive Orientation to daily Occupational Performance (CO-OP) approach; and (2) Computer-based EF training (COMPUTER training). Method Participants received 16 h of either CO-OP or COMPUTER training. We assessed feasibility and acceptability of each intervention, and change in intervention outcomes at baseline, post-intervention and one-month follow-up. Performance and satisfaction with performance in self-selected everyday life goals were measured by the participant and the significant other-rated Canadian Occupational Performance Measure (COPM). Other intervention outcomes included changes in EF impairment, participation in daily life and self-efficacy. Results Six participants received CO-OP and five received COMPUTER training: one in each group discontinued the intervention for medical reasons unrelated to the intervention. The remaining nine participants completed all 16 sessions. Participants expressed high levels of satisfaction with both interventions. Both treatment groups showed large improvements in self and significant other-rated performance and satisfaction with performance on their goals immediately post-intervention and at follow-up (CO-OP: effect sizes (ES) = 1.6-3.5; COMPUTER: ES = 0.9-4.0), with statistically significant within-group differences in CO-OP (p < 0.05). The COMPUTER group also showed large improvements in some areas of EF impairment targeted by the computerised tasks (ES = 0.9-1.6); the CO-OP group demonstrated large improvements in self-efficacy for performing everyday activities (ES = 1.5). Conclusions Our findings provide preliminary evidence supporting the feasibility of using both CO-OP and COMPUTER training with patients with executive dysfunction post-stroke. Implications for Rehabilitation Computerised executive function training and occupation-based strategy training are feasible to deliver and acceptable to persons with executive dysfunction post-stroke. Preliminary evidence suggests that both interventions have a positive impact on real-world outcomes; and, that CO-OP might have a greater impact on improving self-efficacy for performing everyday activities.

Self-Care Self-Efficacy Correlates with Independence in Basic Activities of Daily Living in Individuals with Chronic Stroke

BACKGROUND

(1) To characterize the self-care self-efficacy (SCSE) of community dwelling individuals with chronic stroke and (2) to determine the contribution of SCSE to the independence in basic and instrumental activities of daily living (BADL and IADL) and the participation of individuals with chronic stroke. SCSE is the confidence in one's own ability to perform self-care activities.

METHODS

This cross-sectional study included fifty community-dwelling individuals mean (SD) age 59.8 (9.3) years, mean (SD) 3.1 (1.7) years post-stroke who were able to walk at least 10 meters. SCSE was assessed using the Stroke Self-Efficacy Questionnaire (SSEQ), BADL was assessed by the Functional Independence Measure (FIM) (interview), the IADL questionnaire assessed IADL and the Physical Activity Scale for Individuals with Physical Disabilities (PASIPD) assessed participation. Correlation and regression analyses were performed after controlling for grip strength, executive functions and gait speed, factors known to influence independence in daily living.

RESULTS

The mean SCSE level was moderate-high (70%). Significant moderate correlations were found between SCSE to independence in BADL (r = .596, P < .001), IADL (r = .567, P < .001) and participation (r = .340, P < .005). SCSE of our cohort explained 7.4% of the variance of the individual's independence in BADL after controlling for executive functions and gait speed, but did not contribute to their independence in IADL and participation.

CONCLUSIONS

Higher SCSE of individuals with chronic stroke contributes to more independence in BADL. Additional questionnaires regarding self efficacy for IADL should be developed and investigated.

Diversity of approaches in assessment of executive functions in stroke: limited evidence?

Stroke is a leading cause of disability worldwide. Cognitive functions and, in particular, executive function, are commonly affected after stroke, leading to impairments in performance of daily activities, decrease in social participation and in quality of life. Appropriate assessment and understanding of executive dysfunction are important, firstly to develop better rehabilitation strategies for executive functions per se and secondly to consider executive function abilities on rehabilitation strategies in general. The purpose of this review was to identify the most widely used assessment tools of executive dysfunction for patients with stroke, and their psychometric properties.

We systematically reviewed manuscripts published in English in databases from 1999 to 2015. We identified 35 publications. The most frequently used instruments were the Stroop, Digit Span and Trail making tests. Psychometric properties were described for the Executive Function Performance Test, Executive Clock Drawing Task, Chinese Frontal Assessment Battery and Virtual Action Planning — Supermarket, and two subtests of the Cambridge Cognitive Examination — Revised.

There is a paucity of tools to reliably measure executive dysfunction after stroke, despite the fact that executive dysfunction is frequent. Identification of the best tools for executive dysfunction assessment is necessary to address important gaps in research and in clinical practice.

Practice effects and test-re-test reliability of the Five Digit Test in patients with stroke over four serial assessments

OBJECTIVES

To investigate practice effect and test-re-test reliability of the Five Digit Test (FDT) over four serial assessments in patients with stroke.

DESIGN

Single-group repeated measures design.

METHODS

Twenty-five patients with stroke were administered the FDT in four consecutive assessments every 2 weeks. The FDT contains four parts with five indices: 'basic measures of attention and processing speed', 'selective attention', 'alternating attention', 'ability of inhibition' and 'ability of switching'.

RESULTS

The five indices of the FDT showed trivial-to-small practice effects (Cohen's d = 0.03-0.47) and moderate-to-excellent test-re-test reliability (intra-class correlation coefficient = 0.59-0.97). Practice effects of the five indices all appeared cumulative, but one index, 'basic measures of attention and processing speed', reached a plateau after the second assessment. The minimum and maximum values of the 90% confidence interval (CI) of reliable change index modified for practice (RCIp) for this index were [-17.6, 11.2].

CONCLUSIONS

One of five indices of the FDT reached a plateau, whose minimum and maximum values of the 90% CI RCIp are useful to determine whether the change in an individual's score is real. However, clinicians and researchers should be cautious when interpreting the test results of these four indices over repeated assessments.

Impact of first-ever mild stroke on participation at 3 and 6 month post-event: the TABASCO study

PURPOSE

This study focused on the relationships between cognition, participation and quality of life (QoL) among first-ever mild ischemic stroke patients 3 months post-event. We hypothesized that significant correlations exist between cognition, executive functions (EF), QoL and participation; and that EF and QoL will significantly contribute to participation beyond demographics and stroke severity at 3 and from 3 to 6 months post-stroke.

METHODS

A prospective cohort study, recruiting consecutive first-ever stroke patients from a large tertiary hospital. The inclusion criteria were first event, mild stroke (NIHSS ≤ 5), and no previous significant neurological or cognitive impairment. In addition to assessment every 6 month at the hospital, an assessment battery was administered at home 3 months post-stroke.

RESULTS

Participants showed mild to moderate difficulties in cognition and participation (n = 249). Low to moderate correlations were found between cognition and EF with participation (-0.380, p < 0.05; r = 0.460, p < 0.001, respectively); and cognition with QoL (r = 0.421, p < 0.001). EF and QoL contributed significantly to participation at 3 months (R(2) = 0.961) and in addition education at 6 months (R(2) = 0.701).

CONCLUSIONS

Participants after mild ischemic stroke experienced cognitive and EF difficulties that affect their participation and QoL. Further studies are needed of mild stroke survivors to enhance our understanding of the variables that affect participation.

IMPLICATIONS FOR REHABILITATION

The findings of the current study have significant implications for the participation of people after mild stroke in the community. Health care systems in general and rehabilitation programs, in particular, do not consider that these clients need rehabilitation as most of them perform basic daily functions independently. Thus, although cognitive and EF deficits are found in people following even mild stroke, but are not externally apparent, these impairments are mostly neglected by the health care system. Mild stroke has long-term effects in most cases and effect family members as well. The implications of the study's results, as well as those of other studies, emphasize the necessity of follow-up and rehabilitation efforts at home and in the community. These efforts should focus on re-enabling the individual to participate in previous activities as much as possible and on providing support for family members. The strength of this study lies in the large number of participants who were evaluated at home in their natural environments. Studies of this kind are rarely performed in the participants' real-life settings, thus the current study provides an important perspective on the participation of this population in the community.

[Executive function deficits following stroke]

BACKGROUND

Executive function deficit is a cognitive dysfunction resulting in a reduced ability to initiate, control and monitor targeted behaviour. Our clinical experience indicates that this often remains undiagnosed following stroke.

METHOD

The article is based on literature searches using the search terms «Stroke» and «Executive function» via the search engine McMaster Plus, in the databases Cochrane Library and PubMed, coupled with the authors' own experience.

RESULTS

Executive function deficit is a common form of stroke-related cognitive dysfunction which often accompanies emotional instability and depression. The condition is an important risk factor for loss of self-sufficiency and for reduced survival. Diagnosis is based on the patient's history and observation, supplemented by cognitive testing. Executive function deficits also occur in patients with no clinical signs of stroke, but who have image diagnostic signs of cerebral ischaemia, and with other cerebral diseases such as Parkinson's disease and dementia. Executive function is mainly located in the prefrontal cortex and the subcortical circuits, but executive function deficits are also seen in cases of lesions in other areas of the brain. The treatment of executive function deficits focuses on compensatory strategies and on recovery of lost function.

INTERPRETATION

Executive function deficits are common with stroke-related cognitive impairment, and may affect the prognosis. There is a need for systematic testing and strategies for treatment and prevention.

Influences of Labour Participation Among Persons With Disabilities: A Systematic Review and Best Evidence Synthesis

A systematic literature review was conducted to assess the individual, organisation, societal, and legal influences of labour participation among individuals with a disability.Methods: Nine databases were searched, for peer-reviewed studies of individual, organisation, societal, and legal influences among disabled populations published between 1990 and 2010.

Results: Of a total of 809 papers initially selected, only 46 studies were deemed to be of sufficient quality to be included in the review.Conclusions: Numerous studies have examined labour participation among persons with physical disabilities, some among persons with chronic disabilities, and few among persons with mental disabilities. Strong evidence was found for individual and organisation influences of labour participation among persons with physical disabilities in particular pain, catastrophising, job strain, and support. Only individual influences provided strong evidence among persons with chronic disabilities and no influences provided strong evidence among those with mental disabilities. The results are presented along with methodological weaknesses and future recommendations.

The five-point test: reliability, validity and normative data for children and adults

The present study provides normative data from a sample of 257 healthy children and 608 adults on a modified version of the Five-Point Test (5PT). The 5PT is a structured and standardized test measuring figural fluency functions. Interrater reliability, test-retest-reliability and construct validity of this measure were analyzed. The sensitivity of the task for cognitive disturbances of patients with neurological diseases was proven by analyzing the test performance in the 5PT of patients with Parkinson's disease. Finally, normative data stratified by age and corrected for education level is provided. The results of the present study confirm the value of the 5PT in the measurement of figural fluency functions in clinical examination and neuropsychological research.

The Tinker Toy Test as a Measure of the Dysexecutive Syndrome in Those from Differing Socio-Economic Backgrounds

We investigated the impact of socio-economic status (SES) on executive functioning in a group of participants who were at least six months post Acquired Brain Injury (ABI). Challenges exist when measuring executive function in a developing country: norms developed in the country of test origin are rarely transferable to other populations and cultural differences require local test-item adaptation. Furthermore, SES has a graded impact upon cognitive functioning: those from lower socio-economic circumstances tend to produce inferior test scores to those from more affluent backgrounds. Not controlling for these effects may induce diagnostic errors. Three measures of executive functioning, the Wisconsin Card Sorting Test, the Iowa Gambling Test, and the Tinker Toy Test (TTT) were administered to 25 participants who were drawn from a South African Welfare organisation dedicated to supporting and assisting those with acquired brain injury. Sensitivity to race (as a possible measure of SES) was only elicited using the TTT. This test which is simple to administer, ecologically appropriate, and non-language based appears to be a useful adjunct as a measure of executive function in those with ABI from varying SES backgrounds.

Pseudobulbar affect: burden of illness in the USA

INTRODUCTION

Pseudobulbar affect (PBA) is characterized by involuntary and uncontrollable laughing and/or crying episodes, occurring secondary to neurological disease or injury. The impact of PBA on social and occupational function, health status, quality of life (QOL), and quality of relationships (QOR) is not well studied.

METHODS

This US survey conducted by Harris Interactive compared health status and daily function of patients with and without PBA. Eligible respondents were Harris Panel Online registrants previously diagnosed with stroke, multiple sclerosis, Parkinson's disease, Alzheimer's disease, traumatic brain injury, or amyotrophic lateral sclerosis, or primary, nonpaid caregivers for such patients who were too debilitated to participate. PBA was identified by a Center for Neurologic Study lability scale score of 13 or greater. Measures included the 36-item short form health survey (SF-36), the work productivity and impairment (WPAI) questionnaire, visual analog scales (VAS) for impact of PBA symptoms on QOL and QOR, and customized questions related to burden and impact of involuntary laughing/crying episodes on patients' lives. Survey responses were weighted to adjust for the relative proportion of the primary neurological conditions in the overall population and between group differences in patient age and gender. PBA and non-PBA group responses were compared using two-tailed t tests adjusted for severity of the primary neurological conditions.

RESULTS

The 1,052 respondents included 399 PBA group participants and 653 controls. The PBA group showed significantly worse scores versus non-PBA controls on component and summary SF-36 scores (P<0.05 for all), VAS scores (P<0.05 for both), and WPAI scores (P<0.05). Among PBA group respondents, PBA contributed a great deal to or was the main cause of patients becoming housebound for 24% and being moved to supervised living placement for 9% of respondents.

CONCLUSION

PBA is associated with considerable burden incremental to that of the underlying neurological conditions, affecting QOL, QOR, health status, and social and occupational functioning.

Analysis of One Stroke Survivor's Transition into Vocational Experiences

Background and Aims: Return to work presents a unique transition for the person with mild stroke who is often unsupported and does not anticipate difficulties from hidden impairments. The aim of this study was to explore the return to work experience from the perspective of one person with mild stroke.

Methods: An inductive thematic analysis was undertaken with a narrative of e-mail correspondence from a person with mild stroke. The analysis follows the participant from three to six years after stroke during a process of upskilling and training for return to work.

Results: The female participant was 32 years old at the time of stroke and returned to tertiary studies after experiencing difficulties with initial return to work. Four themes emerged from the analysis of the narrative: I don't know which identity to choose, My anxieties and reactions, I need support and structure, and I am exhausted.

Discussion: The results demonstrate the impact of hidden impairments on the struggle to reconcile a past with present identity. The process of reconciliation was ongoing and dependent on work-based experiences that enhanced understanding of strengths and limitations, and required adaptations. The impact of fatigue on performance in work and non-work time was highlighted.

Wisconsin card sorting test as a measure of executive function impairments in stroke patients

The Wisconsin Card Sorting Test (WCST) is among the most frequently administered neuropsychological tests. It is assumed that successful completion of this test requires engagement of executive functions (EF). One of the most common origins of EF impairments is ischemic stroke. The present study intends to evaluate the diagnostic use of the WCST as a measure of these impairments in poststroke patients. Forty-four patients (8 women and 36 men) who had recent unilateral stroke (22 left hemisphere, 22 right hemisphere) participated in the study. The overall accuracy of the WCST in classifying stroke survivors as having executive disorders was poor. Nevertheless, statistical analysis revealed its negative predictive power to be greater than positive predictive power (i.e., normal scores on the WCST reliably indicated the absence of executive disorders in 8 or more out of 10). Performance on the WCST is clearly influenced by severity of the executive disorders. Namely, patients with severe impairment of EF (as measured by go/no-go, fluency, and other EF tests) performed more poorly on the WCST than patients with lesser impairment or those with no impairment at all, the latter group's results being indistinguishable. In addition, this study highlights a three-factor solution to the WCST, which accounted for 90.3% of the variance. The scores that most strongly loaded on Factors 1 to 3 were, in order: percentage of conceptual-level responses, number of trials to complete the first category, and failures to maintain the set of responses. Finally, an analysis using multivariate analysis of variance, with the anterior versus posterior site and left versus right side of the lesion as independent variables, revealed a relatively weak effect of lesion location on the WCST performance. In particular, with respect to all test scores, there is only one significant interaction between the site and side of lesion was obtained (F(₁(,)₂₄) = 4.12; p < .05; i.e., the number of categories achieved was significantly smaller after damage to the frontal lobe on the left than on the right side, whereas the laterality effect was not significant after nonfrontal lesions). In conclusion, to ascertain the cerebral substrates of poststroke executive dysfunction, there is a need to apply more accurate tests than the WCST. The study highlights the importance of a multicomponent approach to executive functioning in stroke patients.