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361.
The present study investigated if unconscious primes can be processed according to different stimulus-response (S-R) rules simultaneously. Participants performed two different S-R rules, such as judging a digit as smaller or larger than five and judging a letter as vowel or consonant. These S-R rules were administered in random order and announced by a previously presented cue. Each target stimulus was preceded by subliminal primes which afforded a different or an identical response according to either the currently irrelevant or currently relevant S-R rule. In three experiments, we consistently found priming effects according to currently irrelevant S-R rules, even when primes for the relevant and irrelevant S-R rules were presented simultaneously. Thus, unconscious stimuli have the power to activate responses according to currently required and currently not required S-R rules concurrently. The results are in line with response activation accounts of subliminal priming and suggest that at least two routes may gain access on response processes simultaneously. 相似文献
362.
In this study, we examined participants' choice behavior in a sequential risk-taking task. We were especially interested in the extent to which participants focus on the immediate next choice or consider the entire choice sequence. To do so, we inspected whether decisions were either based on conditional probabilities (e.g., being successful on the immediate next trial) or on conjunctive probabilities (of being successful several times in a row). The results of five experiments with a simplified nine-card Columbia Card Task and a CPT-model analysis show that participants' choice behavior can be described best by a mixture of the two probability types. Specifically, for their first choice, the participants relied on conditional probabilities, whereas subsequent choices were based on conjunctive probabilities. This strategy occurred across different start conditions in which more or less cards were already presented face up. Consequently, the proportion of risky choices was substantially higher when participants started from a state with some cards facing up, compared with when they arrived at that state starting from the very beginning. The results, alternative accounts, and implications are discussed. 相似文献
363.
仿真气球冒险任务(TheBalloonAnalogRiskTask,BART)能在实验室环境下模拟真实世界的风险情境,具有高生态性,稳定性和可靠性等优点,已经成为风险决策研究中最常用的实验范式之一。近年来,研究者发展了多种BART变体范式,对发展、健康以及精神病理等多领域的风险决策行为及其神经基础开展了广泛探索。BART任务中的风险决策加工与腹侧纹状体、前扣带皮层、脑岛、中脑及背外侧前额叶等脑区的激活相关。未来研究需要进一步完善BART任务在风险决策认知神经领域的信效度并扩展BART的应用情境。 相似文献
364.
Carlo Tomasetto Maria Cristina Matteucci Felice Carugati Patrizia Selleri 《Social Psychology of Education》2009,12(2):191-211
Research on academic learning indicates that many students experience major difficulties with introductory statistics and
methodology courses. We hypothesized that students’ difficulties may depend in part on the fact that statistics tasks are
commonly viewed as related to the threatening domain of math. In two field experiments which we carried out in the ecological
context of introductory statistics courses, the representation of a statistics task administered to undergraduate students
in Psychology (Study 1; n = 127) and Biology (Study 2; n = 166) was manipulated. In both studies we found that students who reported the least favorable prior attainments in math
had their performance thwarted when the task was presented as related to the math domain, whereas no performance impairment
was observed when the task was presented as related to the verbal/linguistic domain. Implications of the findings for the
design and delivery of introductory statistics and research methodology courses are discussed.
相似文献
Carlo TomasettoEmail: |
365.
In many jobs, employees must manage multiple projects or tasks at the same time. A typical workday often entails switching between several work activities, including projects, tasks, and meetings. This paper explores how such work design affects individual performance by focusing on the challenge of switching attention from one task to another. As revealed by two experiments, people need to stop thinking about one task in order to fully transition their attention and perform well on another. Yet, results indicate it is difficult for people to transition their attention away from an unfinished task and their subsequent task performance suffers. Being able to finish one task before switching to another is, however, not enough to enable effective task transitions. Time pressure while finishing a prior task is needed to disengage from the first task and thus move to the next task and it contributes to higher performance on the next task. 相似文献
366.
Purpose The purpose of this study was to investigate the relationship between counterproductive behaviors (CPBs) and psychological
well-being in a teamwork setting. Moreover, we examined the moderating effect of task interdependence. CPBs are considered
in light of four dimensions, namely parasitism, interpersonal aggression, boastfulness, and misuse of resources.
Design/Methodology/Approach Data were collected from a sample of 249 individuals working in a Canadian prison. The study was based on two measurement
times.
Findings The results reveal that the four dimensions of CPBs are negatively related to psychological well-being and that relationships
involving interpersonal aggression and boastfulness are moderated by task interdependence.
Implications This study highlights the importance for managers to identify the presence of CPBs in their team as soon as possible so as
to be able to remedy them before they affect team members’ psychological well-being. Moreover, interpersonal aggression and
boastfulness may be particularly detrimental in a context of high interdependence.
Originality/Value This study further extends the nomological network of CPBs. Indeed, the results indicate that the presence of CPBs may harm
employees’ mental health. Furthermore, this study shows that a contextual characteristic (i.e., task interdependence) may
amplify the detrimental effect of some CPBs.
相似文献
C. AubéEmail: |
367.
Daniel Schuepbach Mariëtte Huizinga Stefan Duschek Simone Grimm Heinz Boeker Daniel Hell 《Brain and cognition》2009
Set shifting provokes specific alterations of cerebral hemodynamics in basal cerebral arteries. However, no gender differences have been reported. In the following functional transcranial Doppler study, we introduced cerebral hemodynamic modulation to the aspects of set shifting during Wisconsin Card Sorting Test (WCST). Twenty-one subjects underwent the WCST during insonation of the middle cerebral arteries. We examined gender effects on task performance and cerebral hemodynamic modulation. Further, we investigated the linkage between performance and cerebral hemodynamic modulation. In females, maximum positive modulation was restricted to the behaviorally relevant time point of set shifting, and there were time-locked associations between mental slowing during set shifting and rapid cerebral hemodynamic modulation exclusively in females. This study provides evidence of gender-related cerebral hemodynamic modulation during set shifting, and we detected time-locked brain–behavior relationship during cognitive control in females. 相似文献
368.
This study investigated preparatory processes involved in adapting to changing episodic memory retrieval demands. Event-related potentials (ERPs) were recorded while participants performed a general old/new recognition task and a specific task that also required retrieval of perceptual details. The relevant task remained either constant or changed (predictably or randomly) across trials. Responses were slowed when participants switched from the specific to the general task but not vice versa. Hence, asymmetrical switch costs were observed, suggesting that retrieval preparation is dependent not only on the current retrieval goal but also influenced by recent retrieval attempts. Consistently, over posterior scalp regions ERPs associated with advance preparation were modulated by the preceding task, reflecting increased attentional selection requirements for the general task, and by the foreknowledge about the task sequence. When retrieval demands remained constant, frontal slow-waves elicited by retrieval-cues were more positive going for the specific task, indicating full implementation of a retrieval orientation that allows more efficient retrieval of perceptual details. 相似文献
369.
370.
Impairments in either “cool” or “hot” processes may represent two pathways to deficient decision-making. Whereas cool processes are associated with cognitive and rational decisions, hot processes are associated with emotional, affective, and visceral processes. In this study, 168 boys were administered a card-playing task at ages 13 and 14 years to assess response perseveration. This task was designed to initially reward playing and gradually associate playing with punishment. Measures of subjective ordering (cool processes) and neuroticism (hot processes) at age 13 years were used to examine how these individual characteristics relate to perseveration over time. A decrease in perseveration from age 13 to 14 was associated with cool processes whereas hot processes were associated with response perseveration only over time. A complementary but simultaneous assessment of cool and hot processes, such as neuropsychological and personality tests, could facilitate treatment planning of children with behavioral problems. 相似文献