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11.
Dual-task methodology often directs participants’ attention towards a gross motor skill involved in the execution of a skill, but researchers have not investigated the comparative effects of attention on fine motor skill tasks. Furthermore, there is limited information about participants’ subjective perception of workload with respect to task performance. To examine this, the current study administered the NASA-Task Load Index following a simulated shooting dual-task. The task required participants to stand 15 feet from a projector screen which depicted virtual targets and fire a modified Glock 17 handgun equipped with an infrared laser. Participants performed the primary shooting task alone (control), or were also instructed to focus their attention on a gross motor skill relevant to task execution (gross skill-focused) and a fine motor skill relevant to task execution (fine skill-focused). Results revealed that workload was significantly greater during the fine skill-focused task for both skill levels, but performance was only affected for the lesser-skilled participants. Shooting performance for the lesser-skilled participants was greater during the gross skill-focused condition compared to the fine skill-focused condition. Correlational analyses also demonstrated a significant negative relationship between shooting performance and workload during the gross skill-focused task for the higher-skilled participants. A discussion of the relationship between skill type, workload, skill level, and performance in dual-task paradigms is presented. 相似文献
12.
Derenne A 《Journal of the experimental analysis of behavior》2010,93(3):485-494
A shift in generalization gradients away from S+ and towards stimuli on the opposite end of the stimulus dimension from S- is a well established phenomenon in the laboratory, occurring with humans and nonhumans and with a wide range of stimuli. The phenomenon of gradient shifts has also been observed to have an analogous relationship to a variety of apparent biases in preference observed in the natural environment. One way to examine the validity of such analogies is by examining whether gradient shifts can be observed with complex and naturalistic stimuli. In the present experiment, undergraduates were trained to discriminate between faces that varied in terms of relative bilateral facial symmetry (a stimulus dimension correlated with health and attractiveness). Comparisons were made within subjects, using two sets of images. For both sets, the faces varied from naturally asymmetrical to symmetrical, and S+ was a face equidistant to the two extremes. With one set, S- was the naturally asymmetrical face, and with the other, S- was the symmetrical face. A peak shift was obtained in both conditions, although the effect was clearer in the aggregate than on the level of the individual. Overall, the results are consistent with the view that the processes responsible for gradient shifts in the lab are relevant to judgments made in the natural environment. 相似文献
13.
Longitudinal predictors of changes in the morningness–eveningness personality among Norwegian nurses
Øystein Vedaa Bjørn Bjorvatn Nils Magerøy Eirunn Thun Ståle Pallesen 《Personality and individual differences》2013
The aim of this cohort study was to investigate factors that might cause a shift in morningness–eveningness personality. A large sample of Norwegian nurses (n = 1144) participated in a longitudinal survey study about life- and work factors, symptoms of anxiety and depression, and habits such as smoking, caffeine- and alcohol consumption. A hierarchical regression analysis was employed to determine if these variables had predictive value concerning changes in morningness assessed with the Diurnal Type Scale (DTS) over a 24-month interval. The results showed that percentage of full time equivalent, having children (or having children move in), and female gender all predicted higher scores on the morningness scale over time. Also, factors such as number of night shifts during the past two years, whether the subject had started smoking and higher alcohol consumption by the subject all predicted lower scores on the morningness scale over time. 相似文献
14.
Carolyn E. Schwartz Sc.D. Nicholas Covino Psy.D. Abraham Morgentaler M.D. William DeWolf M.D. 《Psychology & health》2013,28(5):651-661
Abstract The clinical and psychosocial effects of immediate penile prosthesis implantation at the time of radical prostatectomy (RP) were investigated in 97 consecutive patients and 68 partners. Prosthesis recipients reported more frequent sexual contact, fewer marital problems and slightly fewer sexual functioning problems than the RP-alone patients. There were no group differences on any sociodemographic characteristics, on disease recurrence, on physical and psychosocial functioning, or on reported depression. Patients who chose the prosthesis did, however, evidence less of a link between depression and functional limitations and between depression and marital problems. They also had lower levels of agreement with their partners in reporting their own depression, as compared to the patients who opted for RP surgery alone. We conclude that the penile prosthesis was associated with an increased frequency of sexual contact, a reduction in reported marital problems, and stylistic differences between the two patient groups in dealing with affect. 相似文献
15.
It is shown that initially sharp interface in AB diffusion couple, above the ordering temperature, can shift with anomalous kinetics, i.e. deviations from the parabolic growth kinetics are possible. The initial slopes of the shift versus time functions can be even unity for large diffusion asymmetry (the ratio of diffusion coefficients of the parent materials in orders of magnitude) and gradually decrease to 0.5 at larger distances (longer times). This is in accordance with earlier results obtained in phase separating systems. It is shown that from the results of simulations the crossover thickness, X*, between the linear and parabolic regimes can also be calculated, and the applicability of the linear–parabolic law is confirmed. Furthermore, it is illustrated that the crossover thickness depends exponentially on the diffusion asymmetry parameter, with the exponent close to the value obtained from analytical estimations. 相似文献
16.
Michael J. Reiss 《Psychodynamic Practice》2013,19(3):335-338
Abstract Some ten years ago, while I was training towards ordination as a minister in the Church of England, close friends in the village where I lived took me to a talk given by Michael Jacobs to celebrate the 10th anniversary of the founding of CCC, the Cambridgeshire Consultancy in Counselling, on whose training course my friends, Jenny and David, were then studying. 相似文献
17.
Tarja Heponiemi Marko Elovainio Anne Kouvonen Anja Noro Harriet Finne-Soveri Timo Sinervo 《European Journal of Work and Organizational Psychology》2013,22(2):194-202
The present study examined whether organizational justice moderates the association of shift work and employment type with patient-related stress, stress symptoms, and musculoskeletal symptoms. Cross-sectional survey data from 1270 Finnish female elderly care staff aged 18–69 years was used. Analyses of covariance were used to examine the associations adjusted for age,marital status, education, and tenure. Organizational justice was associated with lower levels of patient-related stress, stress symptoms, and musculoskeletal symptoms. Organizational justice mitigated stress symptoms related to working night shift and three shifts. In addition, organizational justice mitigated the patient-related stress associated with working on fixed-term contracts. Organizational justice was also able to alleviate musculoskeletal symptoms associated with working on permanent contracts. Thus, we found evidence for organizational justice being able to mitigate the negative effects of shift work and employment type. Promoting organizational justice in organizations with shift work and lots of fixed-term contracts is of importance. 相似文献
18.
Winton AS 《Journal of the experimental analysis of behavior》1975,24(3):303-310
Pigeons were exposed to stimuli presented on two keys. For some birds, the stimuli varied in a dimension of visual flicker-rate, and for others they varied in visual intensity. During differential training, concurrent schedules operated, with one stimulus correlated with one schedule and another stimulus correlated with a second schedule that arranged a lower, or zero, rate of reinforcement. The stimuli were alternated randomly on the two keys. Generalization tests were given in which the original two, and seven other stimuli lying in the same dimension, were presented in pairs on the two keys in various combinations. In the generalization test given after differential training, each bird showed peak shift. The data did not support explanation for peak shift that gave critical emphasis to whether stimuli were presented simultaneously or successively during differential training. 相似文献
19.
Roni Porat Maya Tamir Michael J. A. Wohl Tamar Gur Eran Halperin 《Cognition & emotion》2019,33(3):480-491
A careful look at societies facing threat reveals a unique phenomenon in which liberals and conservatives react emotionally and attitudinally in a similar manner, rallying around the conservative flag. Previous research suggests that this rally effect is the result of liberals shifting in their attitudes and emotional responses toward the conservative end. Whereas theories of motivated social cognition provide a motivation-based account of cognitive processes (i.e. attitude shift), it remains unclear whether emotional shifts are, in fact, also a motivation-based process. Herein, we propose that under threat, liberals are motivated to feel existential concern about their group’s future vitality (i.e. collective angst) to the same extent as conservatives, because this group-based emotion elicits support for ingroup protective action. Within the context of the Palestinian-Israeli conflict, we tested and found support for this hypothesis both inside (Study 1) and outside (Study 2) the laboratory. We did so using a behavioural index of motivation to experience collective angst. We discuss the implications of our findings for understanding motivated emotion regulation in the context of intergroup threat. 相似文献
20.
为了在语篇的层面上从浅层的语词加工和深层的情境加工两个角度考察时间参照加工的特点,采用单因素4水平重复测量实验设计,使用EyelinkⅡ型眼动仪比较了时间参照与时间转换的眼动指标。结果显示,时间词区:远参照与短时转换的眼动指标接近,近参照与长时转换的指标接近;关键事件区:远参照与长时转换的指标接近,近参照与短时转换的指标接近。结果表明时间参照表现出类似时间转换的特点,其特点与能否维系语篇的因果连贯性相关。 相似文献