effort

Effort
  • DOI:
    文章类型: Journal Article
    失语症中的言语产生通常被描述为“努力”,虽然一致的后果,尚未探索高度的认知努力。使用最近关于精神努力的工作作为理论框架,本研究调查了在卒中后失语症参与者中,努力相关疲劳如何导致图片命名表现下降.我们分析了来自先前研究的三个数据集,其中参与者完成了大型图片命名测试。在三个样本中的两个样本中,整个试验的命名准确性下降具有统计学意义。实践也有显着的效果(在第二次测试管理中表现更好),词频(更频繁的单词性能更好),和单词长度(较短单词的性能更好)。这些结果是中风后失语症中疲劳影响语言任务表现的第一个具体证明。他们为研究精神努力/疲劳开辟了一条新途径,对失语症评估有潜在的影响,治疗,和管理。
    Speech production in aphasia is often described as \"effortful\", though the consequences of consistent, high degrees of cognitive effort have not been explored. Using recent work on mental effort as a theoretical framework, the present study examined how effort-related fatigue produces decrements in performance in picture naming among participants with post-stroke aphasia. We analyzed three data sets from prior studies where participants completed a large picture naming test. Decreasing naming accuracy across trials was statistically significant in two of the three samples. There were also significant effects of practice (better performance on a second test administration), word frequency (better performance for more frequent words), and word length (better performance for shorter words). These results are the first concrete demonstration of fatigue affecting performance on a language task in post-stroke aphasia. They open a new avenue for research on mental effort/fatigue with potential implications for aphasia assessment, treatment, and management.
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  • 文章类型: Journal Article
    这项研究的目的是确定是否有全方位的领导和员工的努力之间的积极关系,效率,和满意度。对哥伦比亚公司的577名高管进行了问卷调查,并采用偏最小二乘结构方程模型(PLS-SEM)方法对数据进行分析。结果表明,变革型领导和交易型领导对额外努力都有直接和显著的影响。有效性,和满意,变革型领导对这些因素的影响最大。相反,被动回避型领导对这三种结构都有负面影响。这项研究验证了MLQ5X在南美国家的有效性,这种研究处于早期阶段的地理区域。最后,整个领导风格的转变,事务性,而被动回避的人则被看待。这些样式被视为二阶构造,在潜在的多维模型出现时挑战它们。
    The purpose of this study is to determine if there is a positive relationship between full-range leadership and employees\' effort, efficiency, and satisfaction. A questionnaire was administered to 577 executives from Colombian companies, and the data was analyzed using a partial least squares structural equation modeling (PLS-SEM) approach. The results show that both transformational and transactional leadership have a direct and significant impact on extra effort, effectiveness, and satisfaction, with transformational leadership having the greatest impact on these factors. Conversely, passive-avoidant leadership has negative effects on these three constructs. This study validates the effectiveness of the MLQ 5X in a South American country, a geographical region where such studies are in their early stages. Finally, the whole range of leadership styles-transformational, transactional, and passive-avoidant-is looked at. These styles are seen as second-order constructs that challenge latent multidimensional models as they emerge.
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  • 文章类型: Journal Article
    检索诱导的遗忘(RIF)实验表明,从给定的概念类别中检索一些最近编码的项目的行为会导致更大的遗忘来自同一类别的竞争项目。然而,使用情绪刺激的RIF研究产生了不同的结果,可能是由于在检索实践中恢复了唤醒或负面影响。为了更间接地诱发负面情景记忆的遗忘,我们检查了检索中性语义记忆是否会导致相关负记忆的RIF。在两个实验中,参与者研究了8个分类列表,这些列表包括相同数量的否定词和中性词(实验1),或者中性词之前有中性或阴性图像(实验2).为了避免在检索实践中重新暴露个人负面材料,然后,参与者执行他们生成的语义记忆检索任务(即,来自一半研究类别的新中性词)的完整词干。我们发现语义检索,或单词生成,诱导遗忘最近研究的单词,而与它们的情绪效价或原始情绪背景无关。此外,在两个实验中,较不成功的单词生成与较强的RIF效应相关。在实验2中,RIF的大小也与单词生成过程中检索工作的较高主观评分相关。一起,这些结果表明,即使在检索中性语义记忆时,费力的检索可能会增强抑制过程,从而导致忘记中性和消极的情景记忆。
    Retrieval-induced forgetting (RIF) experiments show that the act of retrieving some recently encoded items from a given conceptual category leads to greater forgetting of competing items from that same category. However, RIF studies using emotional stimuli have produced mixed results, perhaps due to the reinstatement of arousal or negative affect during retrieval practice. To induce forgetting of negative episodic memories more indirectly, we examined if retrieving neutral semantic memories leads to RIF of related negative memories. In two experiments, participants studied eight categorized lists comprised of an equal number of negative and neutral words (Experiment 1) or neutral words preceded by neutral or negative images (Experiment 2). To avoid re-exposing individuals to negative material during retrieval practice, participants then performed a semantic memory retrieval task in which they generated (i.e., completed word-stems for) new neutral words from half of the studied categories. We found that semantic retrieval, or word generation, induced forgetting of recently studied words irrespective of their emotional valence or original emotional context. Additionally, across both experiments, less successful word generation was associated with stronger RIF effects. In Experiment 2, the magnitude of RIF was also correlated with higher subjective ratings of retrieval effort during word generation. Together, these results suggest that even when retrieving neutral semantic memories, effortful retrieval may enhance inhibitory processes that lead to forgetting of both neutral and negative episodic memories.
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  • 文章类型: Journal Article
    越来越多的证据表明,呼吸频率(fR)是高强度运动中努力的有效标志,包括间歇性的运动,像足球。然而,到目前为止,很少有人尝试用不显眼的设备来监测足球中的fR。这项研究评估了三种基于应变的商业可穿戴设备在足球特定运动中测量fR的有效性。在两次单独访问足球场时,15名球员穿着ComfTech®(CT)背心或BioharnessTM(BH)3.0表带和TymeWearTM(TW)背心进行了30分钟的验证协议。使用定制的算法从三个商业设备的呼吸波形中提取fR,并与参考面罩记录的比较。商用设备的fR时间过程通常类似于参考系统的fR时间过程。平均绝对百分比误差为,平均而言,CT为7.03%,TW为8.65%,BH的逐次呼吸比较为14.60%,CT为1.85%,TW为3.27%,在30s窗口中与参考系统进行比较时,BH为7.30%。尽管测量方案具有挑战性,我们的研究结果表明,一些目前可用的可穿戴传感器确实适用于不显眼地测量足球中的fR。
    Growing evidence suggests that respiratory frequency (fR) is a valid marker of effort during high-intensity exercise, including sports of an intermittent nature, like soccer. However, very few attempts have been made so far to monitor fR in soccer with unobtrusive devices. This study assessed the validity of three strain-based commercial wearable devices measuring fR during soccer-specific movements. On two separate visits to the soccer pitch, 15 players performed a 30 min validation protocol wearing either a ComfTech® (CT) vest or a BioharnessTM (BH) 3.0 strap and a Tyme WearTM (TW) vest. fR was extracted from the respiratory waveform of the three commercial devices with custom-made algorithms and compared with that recorded with a reference face mask. The fR time course of the commercial devices generally resembled that of the reference system. The mean absolute percentage error was, on average, 7.03% for CT, 8.65% for TW, and 14.60% for BH for the breath-by-breath comparison and 1.85% for CT, 3.27% for TW, and 7.30% for BH when comparison with the reference system was made in 30 s windows. Despite the challenging measurement scenario, our findings show that some of the currently available wearable sensors are indeed suitable to unobtrusively measure fR in soccer.
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  • 文章类型: Journal Article
    骑自行车是最广泛接受的休闲活动之一,用于锻炼等目的,康复,和通勤。这项研究旨在评估协助三名未受损参与者的可行性(年龄:34.0±7.9岁,高度:1.86±0.02m,重量:75.7±12.7kg)使用GuroX髋关节外骨骼,最初设计用于助行,在对1W/kg的阻力循环。性能评估采用了扫描协议,该协议可以操纵外骨骼的峰值伸展和屈曲扭矩的时序,此外还可以进行人在环优化,以基于代谢成本来增强这些时序。我们的研究结果表明,对于伸展和屈曲,峰值辅助扭矩约为10.3Nm。与透明且无外骨骼条件相比,GuroX大大降低了循环的净代谢成本31.4±8.1%和26.4±14.1%,分别。这证明了开发用于步行辅助的髋部外骨骼对骑自行车具有深远的益处的巨大潜力。此外,定制援助策略证明有利于最大限度地提高援助。虽然我们认为平均电机功率是减少循环工作量的主要原因,参与者反馈表明用户舒适度和用户与外骨骼之间的同步可能已经起到了不可或缺的作用。进一步的研究应该通过在现实世界中使用更大的参与者来验证我们的初步发现。结合更多样化的参数集以进行人在环优化可以增强个性化的援助策略。
    Cycling stands as one of the most widely embraced leisure activities and serves purposes such as exercise, rehabilitation, and commuting. This study aimed to assess the feasibility of assisting three unimpaired participants (age: 34.0 ± 7.9 years, height: 1.86 ± 0.02 m, weight: 75.7 ± 12.7 kg) using the GuroX hip exoskeleton, originally designed for walking assistance, during cycling against a resistance of 1 W/kg. The performance evaluation employed a sweep protocol that manipulated the timing of the exoskeleton\'s peak extension and flexion torque in addition to human-in-the-loop optimization to enhance these timings based on metabolic cost. Our findings indicate that with a peak assistance torque of approximately 10.3 Nm for extension and flexion, the GuroX substantially reduced the net metabolic cost of cycling by 31.4 ± 8.1% and 26.4 ± 14.1% compared to transparent and without exoskeleton conditions, respectively. This demonstrates the significant potential of a hip exoskeleton developed for walking assistance to profoundly benefit cycling. Additionally, customizing the assistance strategy proves beneficial in maximizing assistance. While we attribute the average motor power to be a major contributor to the reduced cycling effort, participant feedback suggests that user comfort and synchronization between the user and exoskeleton may have played integral roles. Further research should validate our initial findings by employing a larger participant pool in real-world conditions. Incorporating a more diverse set of parameters for the human-in-the-loop optimization could enhance individualized assistance strategies.
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  • 文章类型: Journal Article
    目标:在当代工作场所,持久的疲劳已经成为员工的标准。这项调查评估了这种工作条件是否会加剧员工个人资源的消耗。恢复的需要是减轻工作后疲劳的必要性的指标。对恢复的高度需求意味着员工必须在已经疲劳的情况下开始新的工作日。
    方法:这项研究招募了两组护士,按回收需求高和回收需求低分类,检查各组工作努力和头发皮质醇浓度之间的相关性。
    结果:头发皮质醇浓度可作为特定时间范围内累积皮质醇分泌的生物学标记,反映此间隔期间的总体个人资源支出。研究结果表明,内在工作努力(过度承诺)与头发皮质醇水平之间存在显着正相关,仅在高度需要恢复的护士中。
    结论:这些结果意味着在疲劳中积极努力可能导致过度劳累。这种见解通过说明员工的个人意志如何影响疲劳的积累,丰富了经典的“努力-恢复”模型。
    OBJECTIVE: In the contemporary workplace, enduring fatigue has become a standard for employees. This investigation assesses whether such working conditions exacerbate the depletion of employees\' personal resources. The need for recovery serves as an indicator of the necessity to mitigate post-work fatigue. A high need for recovery signifies that employees must commence a new workday while already fatigued.
    METHODS: This research recruited two cohorts of nurses, categorized by a high need for recovery and a low need for recovery, to examine the correlation between work effort and hair cortisol concentrations in each group.
    RESULTS: Hair cortisol concentrations serve as a biological marker of cumulative cortisol secretion over a specific time frame, reflecting overall personal resource expenditure during this interval. Findings revealed a notable positive correlation between intrinsic work effort (over-commitment) and hair cortisol levels exclusively among nurses with a high need for recovery.
    CONCLUSIONS: These outcomes imply that active effort amidst fatigue may lead to excessive strain. This insight enriches the classic \'effort-recovery\' model by illustrating how an employee\' s personal volition can influence the accumulation of fatigue.
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  • 文章类型: Journal Article
    选择是否努力获得奖励是人类动机行为的基础。然而,对人类奖励和努力评估的潜在神经动力学知之甚少。这里,我们报告了一项探索性研究,在帕金森病患者执行决策任务时,前额叶皮质(PFC)和基底神经节(BG;丘脑下核和苍白球)的慢性颅内记录显示,奖励和体力劳动水平各不相同。这揭示了奖励和努力的可分离神经特征,BGbeta(12至20Hz)振荡在单次试验基础上跟踪努力,PFCtheta(4至7Hz)表示先前的试验奖励,没有净主观价值的影响。PFC的刺激增加了要约的总体接受度和对奖励的敏感性,同时减少了努力对选择的影响。这项工作揭示了振荡机制,指导基本决策在BG和PFC之间努力获得奖励,支持PFC对此类选择的因果作用,并为未来的研究提供假设。
    Choosing whether to exert effort to obtain rewards is fundamental to human motivated behavior. However, the neural dynamics underlying the evaluation of reward and effort in humans is poorly understood. Here, we report an exploratory investigation into this with chronic intracranial recordings from the prefrontal cortex (PFC) and basal ganglia (BG; subthalamic nuclei and globus pallidus) in people with Parkinson\'s disease performing a decision-making task with offers that varied in levels of reward and physical effort required. This revealed dissociable neural signatures of reward and effort, with BG beta (12 to 20 Hz) oscillations tracking effort on a single-trial basis and PFC theta (4 to 7 Hz) signaling previous trial reward, with no effects of net subjective value. Stimulation of PFC increased overall acceptance of offers and sensitivity to reward while decreasing the impact of effort on choices. This work uncovers oscillatory mechanisms that guide fundamental decisions to exert effort for reward across BG and PFC, supports a causal role of PFC for such choices, and seeds hypotheses for future studies.
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  • 文章类型: Journal Article
    目的:本文描述了工作负荷估算器的创建和改进,该估算器将在学院/药学院中使用,以计算教师的工作量。
    方法:我们描述了药学实践教师工作量估算器的初步开发,包括建立共识的方法和实施过程。此外,我们描述了年度细化和使用扩展到制药和行政学院。
    结果:和结论最终产品是具有内置乘法因子的excel文件,用于估计药房教职员工的工作量。此工作量估算器被美国药学院协会确定为2023年7月估算药房教师工作量的最全面和易于适应的工具。学院理事会和院长理事会教师工作量工作组。工作量估算器目前正在全国数十个不同计划的多机构实施研究中进行研究,并在2024年收集并与学院共享其使用的规范数据和定性观点。
    OBJECTIVE: This paper describes the creation and refinement of a Workload Estimator to be used at Colleges/Schools of pharmacy to calculate faculty workload.
    METHODS: We describe the initial development of the Workload Estimator for pharmacy practice faculty, including the consensus-building methodology and the implementation process. Additionally, we describe the annual refinement and expansion of use to pharmaceutical and administrative sciences faculty.
    RESULTS: The final product is an Excel file with built-in multiplication factors used to estimate pharmacy faculty workload.
    CONCLUSIONS: This Workload Estimator was identified as the most comprehensive and readily adaptable tool to estimate pharmacy faculty workload in July 2023 by the American Association of Colleges of Pharmacy, Council of Faculties, and Council of Deans Task Force on Faculty Workload. The Workload Estimator is currently being studied in a multi-institutional implementation study across dozens of diverse programs across the country with norming data and qualitative perspectives on its use being collected and shared with the Academy in 2024.
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  • 文章类型: Journal Article
    决策涉及权衡结果的可能性,潜在的奖励,和需要的努力。以前的研究集中在风险和回报之间或努力和回报之间的权衡。在这里,我们弥合了这一差距,并研究了努力水平的风险如何影响选择。我们专注于选择的两个关键属性如何影响努力的风险偏好:幅度和概率的变化。两项实验评估了人们对努力的风险态度,另一项实验提供了使用货币赌博的控制条件。人们重视努力的程度与他们的风险偏好模式有关。与货币结果不同,然而,基于努力的风险偏好存在很大的异质性:对努力做出反应的人表现出“翻转”的风险偏好互动模式。模式的方向取决于人们是否将努力视为资源的损失。大多数,但不是全部,人们将努力视为损失,更愿意冒险,以避免潜在的高水平的努力。
    Decision-making involves weighing up the outcome likelihood, potential rewards, and effort needed. Previous research has focused on the trade-offs between risk and reward or between effort and reward. Here we bridge this gap and examine how risk in effort levels influences choice. We focus on how two key properties of choice influence risk preferences for effort: changes in magnitude and probability. Two experiments assessed people\'s risk attitudes for effort, and an additional experiment provided a control condition using monetary gambles. The extent to which people valued effort was related to their pattern of risk preferences. Unlike with monetary outcomes, however, there was substantial heterogeneity in effort-based risk preferences: People who responded to effort as costly exhibited a \"flipped\" interaction pattern of risk preferences. The direction of the pattern depended on whether people treated effort as a loss of resources. Most, but not all, people treat effort as a loss and are more willing to take risks to avoid potentially high levels of effort.
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  • 文章类型: Journal Article
    使用性能有效性测试(PVTs)评估次优性能已成为神经心理学评估中的推荐功能。然而,大多数文献研究了PVTs在主要非西班牙裔白人中的效用,单语英语样本。鉴于文化和语言多样化(CALD)人口的持续增长,尤其是西班牙裔/拉丁美洲人(H/L),有必要提供有关在H/L成人中使用PVTs的现有文献的最新综述.
    我们进行了系统综述,研究了关于在H/L成人中使用绩效效度指标的现有文献。这项审查确定了PVT在评估H/L无效性能方面的效用的证据,并汇编了与这些措施相关的心理测量特性,特异性和灵敏度的具体比率。
    我们确定了六个独立的和四个嵌入的性能有效性度量,这些度量已经在H/L中进行了检查。记忆恶意测试(TOMM)被确定为各种H/L遗产组中研究最多的PVT。在审查的研究中,对于讨论的大多数PVT,通常建议对截止分数进行调整。在H/L内,当社会文化因素,像教育一样,被考虑。
    所审查的不同PVT的推荐截止分数通常不适合用于H/L成年人的遗产组,特别是在包括教育和识字水平较低的成年人的群体中。因此,在对这些人群应用截止日期时,可能需要考虑教育。
    UNASSIGNED: Use of performance validity tests (PVTs) to assess suboptimal performance has become a recommended feature in neuropsychological evaluations. However, most of the literature has examined the utility of PVTs in primarily non-Hispanic White, monolingual English-speaking samples. Given the continual growth of culturally and linguistically diverse (CALD) populations, especially Hispanic/Latin Americans (H/Ls), it is necessary to provide an updated review on the available literature involving the use of PVTs in H/L adults.
    UNASSIGNED: We conducted a systematic review that examined the available literature surrounding use of performance validity measures in H/L adults. This review identified evidence for the utility of PVTs in assessing invalid performance in H/Ls and compiled psychometric properties related to these measures, specifically rates of specificity and sensitivity when available.
    UNASSIGNED: We identified six standalone and four embedded performance validity measures that have been examined in H/Ls. The Test of Memory Malingering (TOMM) was identified as the PVT most studied in various H/L heritage groups. Across the studies reviewed, adjustments to cutoff scores are generally recommended for the majority of PVTs discussed. Within H/Ls, specificity rates tend to be bolstered when sociocultural factors, like education, are considered.
    UNASSIGNED: Recommended cutoff scores across the different PVTs reviewed are not typically suitable for use in heritage groups of H/L adults, especially in groups that include adults with lower levels of education and literacy. Therefore, education may need to be considered when applying cutoffs to these populations.
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