scholarly journals 1083 Nightmares Are Negatively Associated With Immediate Memory And Visuospatial Performance In Individuals With Ptsd

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A412-A413
Author(s):  
A Bullock ◽  
A Burns ◽  
A Alkozei ◽  
E Taylor ◽  
M Grandner ◽  
...  
Keyword(s):  
Working Memory ◽  
Linear Regression ◽  
Visual Memory ◽  
Severity Index ◽  
Unique Contribution ◽  
Post Traumatic Stress ◽  
Immediate Memory ◽  
Independent Variables ◽  
Memory And Attention ◽  
Neuropsychological Status

Abstract Introduction Disturbing dreams and nightmares are common in individuals with post-traumatic stress disorder (PTSD). At present, little research has investigated the associations between nightmares and cognition in these individuals. However, a robust body of research has shown memory and attention impairments among those with PTSD. The present study sought to investigate the potential relationships between cognitive performance and nightmares in this population. Methods Seventy-five individuals (49 female; Mage=31.8, SDage=8.8) were administered the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), the PTSD Checklist for the DSM-5 (PCL-5), the Insomnia Severity Index (ISI), the Functional Outcomes of Sleep Questionnaire (FOSQ), the Clinician-Administered PTSD Scale (CAPS), and the Disturbing Dreams and Nightmares Index (DDNSI). Five linear regressions were conducted with index scores on the RBANS subscales (immediate memory, visuospatial/constructional, language, attention, and delayed memory) as the dependent variables and PCL-5, ISI, FOSQ, CAPS symptom class subscales (intrusion, avoidance, cognition, and arousal), and DDNSI scores entered stepwise. Results A linear regression revealed that nightmares predicted 15% of the variance in RBANS immediate memory scores (R2 change=.152, β=-.390, p=.003). A second linear regression revealed that nightmares predicted 9.6% of the variance in RBANS visual memory scores (R2 change=.096, β=-.310, p=.019). No other independent variables added to either model. None of the independent variables predicted any variance in language, attention, or delayed memory scores. Conclusion Our analysis revealed a unique contribution of nightmares to immediate memory and visuospatial performance in individuals with PTSD. This finding was not better explained by variation in PTSD severity or sleep. Because sleep and dreams are implicated in memory consolidation, one explanation for our finding is that highly distressing trauma-related dreams (i.e. nightmares) may lack the same memory-improving qualities as ordinary dreams. Additionally, given that immediate memory and visuospatial functioning utilize working memory, perhaps nightmares and deficits in working memory share similar mechanisms. Support W81XWH-14-1-0570

Processing Speed and Working Memory Span: Their Differential Role in Superficial and Deep Memory Processes in Schizophrenia

2011 ◽  
Vol 17 (3) ◽  
pp. 485-493 ◽  
Author(s):  
Gildas Brébion ◽  
Rodrigo A. Bressan ◽  
Lyn S. Pilowsky ◽  
Anthony S. David
Keyword(s):  
Working Memory ◽  
Processing Speed ◽  
Visual Memory ◽  
Memory Impairment ◽  
Memory Span ◽  
Memory Deficit ◽  
Regression Analyses ◽  
Independent Variables ◽  
Group Processing ◽  
Two Factors

Previous work has suggested that decrement in both processing speed and working memory span plays a role in the memory impairment observed in patients with schizophrenia. We undertook a study to examine simultaneously the effect of these two factors. A sample of 49 patients with schizophrenia and 43 healthy controls underwent a battery of verbal and visual memory tasks. Superficial and deep encoding memory measures were tallied. We conducted regression analyses on the various memory measures, using processing speed and working memory span as independent variables. In the patient group, processing speed was a significant predictor of superficial and deep memory measures in verbal and visual memory. Working memory span was an additional significant predictor of the deep memory measures only. Regression analyses involving all participants revealed that the effect of diagnosis on all the deep encoding memory measures was reduced to non-significance when processing speed was entered in the regression. Decreased processing speed is involved in verbal and visual memory deficit in patients, whether the task require superficial or deep encoding. Working memory is involved only insofar as the task requires a certain amount of effort. (JINS, 2011, 17, 485–493)

Impact of Androgen-Deprivation Therapy on Cognitive Function in Men With Nonmetastatic Prostate Cancer

2010 ◽  
Vol 28 (34) ◽  
pp. 5030-5037 ◽  
Author(s):  
Shabbir M.H. Alibhai ◽  
Henriette Breunis ◽  
Narhari Timilshina ◽  
Shireen Marzouk ◽  
Diane Stewart ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Working Memory ◽  
Cognitive Function ◽  
Androgen Deprivation Therapy ◽  
Verbal Memory ◽  
Visual Memory ◽  
Androgen Deprivation ◽  
Visuospatial Ability ◽  
Cognitive Domains ◽  
Immediate Memory

Purpose To evaluate the effects of androgen-deprivation therapy (ADT) on cognitive function in men with nonmetastatic prostate cancer (PC). Patients and Methods The following three groups of men age 50 years or older and matched on age and education were enrolled: patients with PC starting continuous ADT (n = 77), patients with PC not receiving ADT (PC controls, n = 82), and healthy controls (n = 82). A battery of 14 neuropsychological tests, examining eight cognitive domains, was administered at baseline, 6 months, and 12 months. Changes in cognitive scores over time were analyzed using the following three approaches: multivariable linear regression; the proportion of participants per group with 1 standard deviation (SD) or greater declines, and the proportion of participants who declined by at least 1.5 SD on two or more tests. Results The mean age and education level of participants were 68.9 years (range, 50 to 87 years) and 15.4 years of education (range, 8 to 24 years), respectively. Adjusted for age and education, all three cohorts had similar cognitive scores at baseline other than in one test of working memory. In adjusted regressions, ADT use was not associated with significant changes in the domains of attention/processing speed, verbal fluency, verbal memory, visual memory, or cognitive flexibility at either 6 months (all P > .05) or 12 months (all P > .05). One test each of immediate memory (P = .029), working memory (P = .031), and visuospatial ability (P = .034) were worse among ADT users than controls at 12 months, but these findings were not confirmed using other analytic approaches. Conclusion There is no consistent evidence that 12 months of ADT use has an adverse effect on cognitive function in elderly men with PC.

scholarly journals DYADIC FACTORS THAT ASSOCIATE WITH INSOMNIA IN CAREGIVERS OF PERSONS LIVING WITH DEMENTIA

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S367-S367
Author(s):  
Glenna S Brewster ◽  
Donald Bliwise ◽  
Fayron Epps ◽  
Kate Yeager ◽  
Ken Hepburn
Keyword(s):  
Clinical Trial ◽  
Linear Regression ◽  
Sleep Disturbances ◽  
Severity Index ◽  
Caregiver Depression ◽  
Factors Associated ◽  
Independent Variables ◽  
Disturbed Sleep ◽  
Baseline Component ◽  
Insomnia Severity

Abstract Insomnia is prevalent in caregivers of persons living with dementia (PLWD); however, more research is needed to identify which dyadic factors most impact caregiver sleep. This study aimed to identify the factors associated with caregiver insomnia in the baseline component of a randomized clinical trial. A linear regression was conducted with caregiver variables (e.g., depression), and PLWD variables (e.g., disruptive nighttime behaviors) as independent variables in relation to insomnia, as assessed with Insomnia Severity Index (ISI). Caregivers (n=49) were on average 63 years, mostly female (65.3%), White (69.4%), and spouses (65.3%). Mean ISI was 6.8, indicating mild-to-moderately disturbed sleep. Multiple linear regression (F(11,32) = 13.4, p<.001) showed that both caregiver-based measures (depression, p<.023) and PLWD-based measures (disruptive nighttime behaviors, p<.001) were independently associated with ISI. Ideas about needed multicomponent dyadic interventions which target both PLWD nighttime behaviors, caregiver depression, and sleep disturbances will be discussed.

scholarly journals Childhood Trauma and Neurocognition in Adults With Psychotic Disorders: A Systematic Review and Meta-analysis

2018 ◽  
Vol 45 (6) ◽  
pp. 1195-1208 ◽  
Author(s):  
Teresa Vargas ◽  
Phoebe H Lam ◽  
Matilda Azis ◽  
K Juston Osborne ◽  
Amy Lieberman ◽  
...  
Keyword(s):  
Working Memory ◽  
Childhood Trauma ◽  
Psychotic Disorder ◽  
Visual Memory ◽  
Psychotic Disorders ◽  
Meta Analysis ◽  
Negative Relationship ◽  
Neurocognitive Function ◽  
Healthy Controls ◽  
Memory And Attention

Abstract Background Characterizing the link between childhood trauma and adult neurocognitive function in psychosis is crucial for improving the fields understanding of how early environmental risk factors impact the presentation of the disorder. To date, the literature has been inconsistent: meta-analytic synthesis is lacking, and it is unclear whether specific cognitive functions are affected. Methods A meta-analysis was performed on a total of 3315 subjects with a psychotic disorder. The links between childhood trauma, overall neurocognitive function, and four cognitive subdomains (working memory, executive function, verbal/visual memory, and attention/processing speed) were examined. Relevant sample characteristics and methodological moderators were tested. The strength of the association between trauma and overall neurocognition in individuals with psychotic disorders was also compared to that of healthy controls. Results Among individuals with psychotic disorders, there was a significant association between overall cognition and childhood trauma, r = −.055; 95% CI = −0.09, −0.02, P = .002. There was also a modest, negative relationship between childhood trauma and working memory, r = −.091; 95% CI = −0.15, −0.03, P = .002. Moderators did not have a significant effect on these analyses. Further, the association between childhood trauma and neurocognition was significantly stronger in healthy controls compared to patients with a psychotic disorder. Conclusion A small negative association was found between overall cognition and childhood trauma in individuals with psychotic disorders. Results suggest the association is less strong for individuals with a psychotic disorder compared to healthy populations. Findings are informative for prominent etiological models of psychosis.

PENGARUH KARAKTERISTIK PEKERJAAN TERHADAP TURNOVER INTENTION PADA BEBERAPA RESTORAN MASAKAN ORIENTAL DI KOTA SURABAYA

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Tony Susilo Wibowo ◽  
I Made Bagus Dwiarta
Keyword(s):  
Linear Regression ◽  
Human Resources ◽  
Turnover Intention ◽  
Job Characteristics ◽  
Independent Variables ◽  
A Value ◽  
Industry Competition ◽  
Task Identity ◽  
Innovation Ability ◽  
Identity Task

 Culinary industry competition getting tougher to make some employers continue to innovate at a restaurant for some things like menu, places, atmosphere and service that became the mainstay of the restaurant. In so doing, it needs one innovation ability of human resources quality and competence in their field. Innovation will be a reminder for consumers who feel the restaurant services and in turn will increase the revenue thus achieved profit restaurant that is optimal.The selected researchers research object was 3rd Restaurant Oriental cuisine i.e. Kapin, X O Cuisine and Paradise Dynasty which respectively have 3 and 2 branches of the restaurant. This research uses the concept of job characteristics expressed by Hackman and Oldham (1976), which are further subdivided into 5 independent variables namely a diversity of tasks, task identity, task meaningful, autonomy and feedback as well as the dependent variable turnover intention, while the analysis on research using multiple linear regression with the respondent an amount of 120 people that consists of all the employees of the restaurant. Data processing results shows that the diversity of the variable assignments and most influential task ID with a value of beta X1  0,676 and the beta X 2 of 0,538 so that these two variables have a positive and significant impact on the turnover intention because the variable is greater than 0.05 alpha. While the 3 other variables i.e  tasks meaningful, autonomy and feedback does not affect significantly to turnover intention. Keywords: Job Characteristics, Turnover intention.  

ANALISIS VARIABEL YANG BERPENGARUH TERHADAP KINERJA PERUSAHAAN DI BURSA EFEK INDONESIA

2019 ◽  
Author(s):  
SUSENO - SUSENO
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Stock Exchange ◽  
T Test ◽  
The Other ◽  
Financial Leverage ◽  
F Test ◽  
Research Results ◽  
Independent Variables ◽  
Influential Variable

ANALISIS VARIABEL YANG BERPENGARUH TERHADAP KINERJA PERUSAHAAN DI BURSA EFEK INDONESIAOleh : Suseno STIE SATRIA Purwokerto ABSTRACT The aims of the research are (1) to analyze influence of age, scale, financial leverage, and profitability to performance of firms at The Indonesian Stock Exchange. (2) to determine the most influential variable on the performance of the firms. Hypotheses proposed in this research were: (1) Age, Scales, Financial Leverage, Profitability influences the performance of firms, (2) Age influences the performance of firms, (3) Scales influences the performance of firms, (4) Financial Leverage influences the performance of firms, (5) Profitability influences the performance of firms. Instrument of analysis employed in the research was multiple linear regression with t test and F test.The results of analyses of t test showed that profitability did not influence the performance of the firms. It was indicated by the value of computed t which was smaller than the value of t table. Meanwhile, the t test of age, scale and financial leverage indicated that the value of computed t > t table. It means that these variables (scale and financial leverage) influenced the performance of the firms. The F test showed that the independent variables of age, scale, financial leverage and profitability as a whole significantly influenced the performance of the firms. It was indicated by the calculated F > the value of F table, the value the age computed t which was smaller than the value of -t table..Based on the research results that age and profitability do not influence the performance of the firms, it is suggested that investors should not pay any attention to those variables. On the other hand, they should pay attention to the variables of scale and financial leverage. It is recommended that for further research should include longer periode of the sample.

How do working memory, general anxiety and math anxiety affect female students’ math performance?

2020 ◽  
Author(s):  
Nachshon Korem ◽  
Orly Rubinsten
Keyword(s):  
Working Memory ◽  
Latent Variables ◽  
Math Anxiety ◽  
Verbal Working Memory ◽  
Math Performance ◽  
Equation Modeling ◽  
Current Evidence ◽  
Unique Contribution ◽  
Shared Variance ◽  
Numeric Information

Current evidence suggests that math anxiety and working memory govern math performance. However, these conclusions are largely based on simple correlations, without considering these variables as a network or examining correlations at the latent variables level. Thus, questions remain regarding the role of the unique and shared variance between math anxiety, working memory and math performance. The purpose of the current study was to (i) uncover the underlying relationships between the variables to understand the unique contribution of each element to the network; (ii) measure the shared variance and identify the interactions between affect and cognition that control math performance. Our analytical approach involved both network analysis approach and structural equation modeling, with a sample of 116 female students.Results show that math anxiety and working memory affect math performance by different mechanisms. Only working memory tests that included numeric information were correlated to math anxiety. Each of the various working memory tasks correlated differently to math performance: working memory as a single latent variable was a better predictor of math performance than visuospatial and verbal working memory as two separate latent variables. Overall, both working memory and math anxiety affect math performance. Working memory tasks that include numeric information can affect performance in math anxious individuals.

PENGARUH KUALITAS PELAYANAN DAN KEPERCAYAAN TERHADAP LOYALITAS NASABAH PT BANK MANDIRI,Tbk CABANG JAKARTA KELAPA GADING BARAT

2015 ◽  
Vol 3 (3) ◽  
Author(s):  
Imam Wibowo ◽  
Santi Putri Ananda
Keyword(s):  
Linear Regression ◽  
Service Quality ◽  
Multiple Linear Regression ◽  
Analysis Tool ◽  
Positive Contribution ◽  
Homogeneous Population ◽  
Independent Variables ◽  
Research Population ◽  
The Impact

Purpose-To study the impact of the service quality and trust on customers loyalty of PT.Bank Mandiri,Tbk; Kelapa Gading Barat Branch. To improve the customers loyalty there are several factors that can influence them, such as service quality and trust. Methodology/approach-The research population was all customers PT.Bank Mandiri,Tbk;Kelapa Gading Barat Branch.According to the homogeneous population and based on the Gay and Diehl Theory, the samples taken were 50 people. Variables in this investigations consisted of: a).Independent Variables (exogenous): Service Quality (X1) and Trust (X2). b).The dependent variable (endogenous) Customers Loyalty (Y). Analysis tool being used is multiple linear regression which previously conducted validity and realiability. Findings-The result of investigations that service quality and trust simultaneously have a very strong contribution of 75,5% to the customers loyalty, and partially showed that service quality has significant and positive contribution to the customers loyalty of 64,8%. Partially, the trust variable has significant and positive contribution which amounted to 55,9% to the customers loyalty.

scholarly journals Which Neuropsychological Tests? Predicting Cognitive Decline and Dementia in Parkinson’s Disease in the ICICLE-PD Cohort

2021 ◽  
pp. 1-12
Author(s):  
Rachael A. Lawson ◽  
Caroline H. Williams-Gray ◽  
Marta Camacho ◽  
Gordon W. Duncan ◽  
Tien K. Khoo ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cognitive Impairment ◽  
Cognitive Decline ◽  
Verbal Fluency ◽  
Neuropsychological Tests ◽  
Visual Memory ◽  
Attention And Memory ◽  
Memory And Attention ◽  
Global Cognition

Background: Cognitive impairment is common in Parkinson’s disease (PD), with 80% cumulatively developing dementia (PDD). Objective: We sought to identify tests that are sensitive to change over time above normal ageing so as to refine the neuropsychological tests predictive of PDD. Methods: Participants with newly diagnosed PD (n = 211) and age-matched controls (n = 99) completed a range of clinical and neuropsychological tests as part of the ICICLE-PD study at 18-month intervals over 72 months. Impairments on tests were determined using control means (<1-2SD) and median scores. Mild cognitive impairment (PD-MCI) was classified using 1-2SD below normative values. Linear mixed effects modelling assessed cognitive decline, while Cox regression identified baseline predictors of PDD. Results: At 72 months, 46 (cumulative probability 33.9%) participants had developed PDD; these participants declined at a faster rate in tests of global cognition, verbal fluency, memory and attention (p <  0.05) compared to those who remained dementia-free. Impaired baseline global cognition, visual memory and attention using median cut-offs were the best predictors of early PDD (area under the curve [AUC] = 0.88, p <  0.001) compared to control-generated cut-offs (AUC = 0.76–0.84, p <  0.001) and PD-MCI (AUC] = 0.64–0.81, p <  0.001). Impaired global cognition and semantic fluency were the most useful brief tests employable in a clinical setting (AUC = 0.79, p <  0.001). Conclusion: Verbal fluency, attention and memory were sensitive to change in early PDD and may be suitable tests to measure therapeutic response in future interventions. Impaired global cognition, attention and visual memory were the most accurate predictors for developing a PDD. Future studies could consider adopting these tests for patient clinical trial stratification.

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