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51.
Guillaume Lamotte Raj C. Shah Orly Lazarov Daniel M. Corcos 《Journal of motor behavior》2017,49(4):365-377
Alzheimer's disease (AD) is the most common form of dementia and the prevalence will increase dramatically in the next decades. Although exercise has shown benefits for people with dementia due to AD as well as their caregivers, the impact of a dyadic exercise intervention including both groups as study participants remains to be determined. The authors review the current clinical evidence for dyadic exercise interventions, which are exercise regimens applied to both the person with dementia and the caregiver. A total of 4 controlled trials were reviewed. This review shows that dyadic exercise interventions are feasible and may produce a positive effect on functional independence and caregiver burden. However, there was insufficient evidence to support a benefit of dyadic exercise intervention on cognitive performance and on behavioral and neuropsychiatric symptoms in participants with dementia due to AD. A dyadic exercise intervention improves functional independence and caregiver burden. However, there is a need for well-designed randomized controlled clinical trials to confirm these benefits and to investigate several important points such as the effects of a dyadic exercise intervention on cognitive and noncognitive outcomes of AD, the optimal intensity of exercise training, and the cost effectiveness of such a program. 相似文献
52.
Jessica Ogilvie Adam Rapp Raj Agnihotri Daniel G. Bachrach 《Journal of Personal Selling & Sales Management》2017,37(2):100-112
It has been broadly assumed by both researchers and managers that the more effort salespeople exert, the better their performance outcomes are likely to be. However, organizations are placing an increasing emphasis not just on objective sales outcomes, but on subjective, customer service outcomes as well. This research tests relationships between employee effort and relational performance. We develop and test the position that employee effort reaches a point of diminishing returns, after which relational performance decreases. Further, in an effort to bound our model, we test the moderating role played by employees' emotional intelligence in this relationship. We test our study model in a lagged, multisource field study, matching survey data collected from 107 employees and 19 supervisors, relational performance metrics, and archived effort data collected for a period of 3 months pre–survey data collection. The results from our analysis indicate that the relationship between effort and relational performance is captured by an inverted U-shaped function that is significantly moderated by emotional intelligence. We find that the effort of employees with low EI reaches an identifiable point of diminishing returns; however, the more effort those with high EI exert, the better their relational performance outcomes tend to be. 相似文献
53.
Raj Agnihotri Colin B. Gabler Omar S. Itani Fernando Jaramillo Michael T. Krush 《Journal of Personal Selling & Sales Management》2017,37(1):27-41
This research investigates the effects of sales-service ambidexterity on salesperson role perceptions, behaviors, and customer satisfaction. Using a business-to-business, salesperson-customer sample, we build and test a model which highlights both the positive and negative consequences of this simultaneous goal pursuit. Specifically, while sales-service ambidexterity positively impacts adaptive selling behaviors, it also increases perceptions of role conflict among salespeople. Customer demandingness moderates these relationships. Taken together, the results provide insights for firms on how to manage their sales force to optimize both sales and service outcomes based on characteristics of their salespeople and customers. 相似文献
54.
Perception of alternated speech operates similarly in young and older adults with age-normal hearing
When speech is rapidly alternated between the two ears, intelligibility declines as the rate of alternation approaches 3 to 5 switching cycles per second, and then, paradoxically, returns to a good level beyond that point. We tested intelligibility when shadowing was used as a response measure (Experiment 1), when recall was used as a response measure (Experiment 2), and when time-compression was used to vary the speech rate of the presented materials (Experiment 3). In spite of claims that older adults are generally slower in switching attention, younger and older adults did not differ in the critical alternation rates producing minimal intelligibility. We suggest that the point of minimal intelligibility in alternated speech reflects an interaction between (1) the rate of disruption induced by breaking the speech stream between two sound sources, (2) the amount of contextual information per ear, and (3) the size of the silent gaps separating the speech elements that must be perceptually bridged. 相似文献
55.
Samaraweera S Sumathipala A Siribaddana S Sivayogan S Bhugra D 《Suicide & life-threatening behavior》2008,38(2):221-228
Sri Lanka has the one of highest rates of suicide. Important factors associated with suicide were determined via the psychological autopsy approach (which had not been carried out previously in Sri Lanka). Over a 3-month period, in a catchment area, 31 suicides among Sinhalese were identified and 27 were investigated. Males were more likely to commit suicide and alcohol abuse and domestic violence were reported as contributory factors. We found it possible to use psychological autopsy methods to obtain information which can inform planned prevention measures. 相似文献
56.
Dinesh J. Braganza Ralph L. Piedmont Jesse Fox Geraldine M. Fialkowski Richard M. Gray 《Journal of counseling and development : JCD》2019,97(3):293-305
This randomized clinical trial with a sample of adults (N = 129) from India explored the effects of a single core‐transformation session on symptom experience and psychological growth. The results over the total 8‐week study period indicated significant, moderate overall effect sizes (ds = 0.63 and 0.52) for symptom experience, emotional stability, affect balance, global well‐being, and purpose in life. Implications for research and clinical practice are discussed. 相似文献
57.
Solanto MV Gilbert SN Raj A Zhu J Pope-Boyd S Pope-Boyd S Stepak B Vail L Newcorn JH 《Journal of abnormal child psychology》2007,35(5):729-744
The Predominantly Inattentive (PI) and Combined (CB) subtypes of AD/HD differ in cognitive tempo, age of onset, gender ratio, and comorbidity, yet a differentiating endophenotype has not been identified. The aim of this study was to test rigorously diagnosed PI, CB, and typical children on measures selected for their potential to reveal hypothesized differences between the subtypes in specific neurocognitive systems (anterior vs. posterior attentional systems) and processes (arousal vs. activation). Thirty-four CB and 26 PI children meeting full DSM-IV criteria for subtype both in school and at home, without confounding reading disability or emotional disorder, were enrolled along with 20 typically developing children. Neurocognitive functions measured included attention, inhibitory control, working memory, learning, and executive functions. Tasks included the Stroop, Wisconsin Card Sorting Test, Continuous Performance Test (CPT). Buschke Selective Reminding Test, ad the Tower of London (TOL), as well as instruments developed by Posner and Sternberg, and tasks assessing the impact on reaction time of [corrected] varying preparatory intervals and stimulus/response complexity. After co-varying for IQ, subtypes differed primarily on measures of impulsivity during tests of vigilance (CPT) and executive function (TOL), with the CB group showing greater impulsivity than both other groups. In addition, the PI group showed worse performance than CB and control groups on the WISC-III Processing Speed Index. Whether analyzed with or without an IQ co-variate, there was no support in the data for hypothesized differences between subtypes in functioning of the anterior vs. posterior attentional systems, nor in involvement of arousal vs. activation processes. The results indicate that the PI and CB subtypes are best differentiated by ratings, observations and tests of cognitive tempo and behavioral impulsivity. Neuropsychological methods have yet to identify critical neuropsychological [corrected] substrates of these differences. 相似文献
58.
Michael Malek-Ahmadi Ashok Raj Brent J. Small 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(3):280-292
ABSTRACT Recent research has demonstrated that patients with Alzheimer's disease (AD) show deficits in semantic processing when compared to cognitively healthy individuals. This difference is thought to be attributed to losses in higher cortical systems that are predominantly associated with executive functioning. The first aim of the study will be to determine if differences in semantic clustering can accurately differentiate patients with amnestic mild cognitive impairment (aMCI) from cognitively normal (CN) individuals. The second aim will be to determine the extent to which semantic processing might be associated with executive functions. Data from 202 (134 CN, 68 aMCI) participants were analyzed to quantify differences in semantic clustering ratios on the HVLT-R. Study participants ages ranged from 51 to 87 with education ranging from 6 to 20 years. ANCOVA revealed statistically significant differences on semantic clustering ratios (p < .001). Moderate correlations between semantic clustering Category Fluency Test (r = .45) were also found. Statistically significant group differences were also present on Trails-B and WAIS-R Digit Symbol performance (p < .001). Overall, these data indicate that deficits in semantic clustering are present in aMCI patients. 相似文献
59.
The influence of precipitation of intermetallic phases on changes in Young's modulus in nickel and zirconium base alloys is discussed. This study shows clearly for the first time that the change in the modulus due to precipitation of intermetallic phases in these alloys is essentially governed by the change in the modulus of the matrix due to removal of precipitation forming elements, and not by the modulus of the precipitated intermetallics or the matrix/intermetallic interface. 相似文献
60.