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231.
Evidence from dual-task performance indicates that speakers prefer not to select simultaneous responses in picture naming and another unrelated task, suggesting a response selection bottleneck in naming. In particular, when participants respond to tones with a manual response and name pictures with superimposed semantically related or unrelated distractor words, semantic interference in naming tends to be constant across stimulus onset asynchronies (SOAs) between the tone stimulus and the picture–word stimulus. In the present study, we examine whether semantic interference in picture naming depends on SOA in case of a task choice (naming the picture vs reading the word of a picture–word stimulus) based on tones. This situation requires concurrent processing of the tone stimulus and the picture–word stimulus, but not a manual response to the tones. On each trial, participants either named a picture or read aloud a word depending on the pitch of a tone, which was presented simultaneously with picture–word onset or 350 ms or 1000 ms before picture–word onset. Semantic interference was present with tone pre-exposure, but absent when tone and picture-word stimulus were presented simultaneously. Against the background of the available studies, these results support an account according to which speakers tend to avoid concurrent response selection, but can engage in other types of concurrent processing, such as task choices. 相似文献
232.
Examining the relationships between self‐efficacy,task‐relevant attentional control,and task performance: Evidence from event‐related brain potentials
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Jason R. Themanson Peter J. Rosen 《British journal of psychology (London, England : 1953)》2015,106(2):253-271
Self‐efficacy (SE) is a modifiable psychosocial factor related to individuals’ beliefs in their capabilities to successfully complete courses of action and has been shown to be positively associated with task performance. The authors hypothesized that one means through which SE is related with improved performance is through enhanced task‐relevant attentional control during task execution. To assess this hypothesis, we examined the relationships between SE and behavioural and neural indices of task performance and task‐relevant attentional control for 76 young adults during the completion of a flanker task. Results showed that greater SE was associated with greater response accuracy and P3b amplitude across task conditions, and faster RT under more difficult task conditions. Additionally, P3b amplitude was found to mediate the relationship between SE and task performance in the difficult condition. These findings suggest that greater attentional allocation to task‐relevant processes, including monitoring stimulus‐response relationships and focusing attention on working memory operations, may help explain the association between SE and improved task performance. 相似文献
233.
在选择促销品时,消费者经常会出现百分数基数忽略错误,即价值判断时只基于百分数大小而忽略基数。本研究以150名大学生为被试,考察计算难度和知识背景对百分数基数忽略的影响。结果表明:仅了解百分数基数忽略现象的消费者无论计算难度高低均会出现百分数基数忽略错误;而了解促销计算原理的消费者在高难度下会出现这种错误,在低难度下则不会,且了解促销原理有助于减轻消费者在高难度下出现该错误的倾向。 相似文献
234.
Johanna K. Kaakinen Annika Lehtola Satu Paattilammi 《Journal of Cognitive Psychology》2015,27(5):640-656
In the present study, second graders (n= 23), fourth graders (n= 16), sixth graders (n= 24) and adults (n= 21) read texts adopted from children’s science textbooks either with the task to answer a “why” question presented as the title of the text or for comprehension when their eye movements were recorded. Immediately after reading, readers answered a text memory and an integration question. Second graders showed an effect of questions as increased processing during first-pass reading, whereas older readers showed the effect in later look-backs. For adult readers, questions also facilitated first-pass reading. Text memory or integration question-answering was not influenced by the reading task. The results indicate that questions increase the standards of coherence for text information and that already young readers do modify their reading behaviour according to task demands. 相似文献
235.
《Journal of Cognitive Psychology》2013,25(1):114-127
The current study investigated whether attentional mechanisms operate on ensembles as higher-order units for selection. In Experiment 1, we presented sets of circles and asked participants to compare the mean sizes of the sets while concurrently detecting a small probe appearing at a centroid of one of the sets. We found that, both with and even without the task instruction to favour larger mean sizes, people's mean size judgement was more accurate for the sets with larger mean sizes. In addition, detection of the probe appearing in the set with the largest mean size was facilitated by a matching task instruction. However, when the task instruction favoured smaller mean sizes, mean size judgement became more accurate for the sets with smaller mean sizes. These results suggest that attentional selection can be based on ensembles. In Experiment 2, we found further evidence that attention was directed towards the centroid of an ensemble, rather than towards an individual member of the ensemble. Together, these results suggest that attentional modulation can operate at the level of ensembles instead of selecting individuals separately and that the centroid of an ensemble can be the locus of selection based on an ensemble. 相似文献
236.
Janie Brisson Pier-Luc de Chantal Hugues Lortie Forgues Henry Markovits 《Thinking & reasoning》2013,19(3):385-403
Three studies examine the influence of varying the difficulty of reasoning on the extent of belief bias, while minimising the possibility that the manipulation would influence the way participants approach the task. Specifically, reasoning difficulty was manipulated by making variations in problem content, while maintaining all other aspects of the problems constant. In Study 1, 191 participants were presented with consistent and conflict problems varying in two levels of difficulty. The results showed a significant influence of problem difficulty on the extent of the belief bias, such that the effect of belief was more pronounced for difficult problems. This effect was stronger in Study 2 (73 participants) where the difference in the difficulty of the problems was purposely accentuated. The results of both studies stress the importance of controlling for problem difficulty when studying belief bias. Study 3 examined one consequence of this, i.e., the classic belief vs. logic interaction could be eliminated by manipulating problem difficulty. Theoretical implications for dual-process accounts of belief bias are also discussed. 相似文献
237.
The authors investigated the influence of task difficulty on warm-up decrement and learning across practice sessions. Three groups of participants practiced a star-tracing task over 3 consecutive days with different levels (e.g., easy, medium, hard) of task difficulty. The performance data were modeled with a 2 time scale function that represented the transient, fast time scale process of warm-up decrement superimposed with the persistent, slow time scale process of learning. Movement time decreased as a function of practice with the most difficult condition exhibiting the greatest reduction though still the longest movement time. The 2 time scale model provided a better fit to the data than an exponential or power law function and showed that the 3 difficulty conditions exhibited similar rates of change for the respective slow (i.e., learning) and fast (i.e., warm-up decrement) time scale processes that varied by an order of magnitude. Task difficulty was inversely related to the initial level of warm-up decrement but not the rate of performance recovery early in a practice session. The findings support the postulation that there is a persistent learned component to the initial conditions in subsequent practice sessions but that there is a common time scale of accommodating the transient process of warm-up decrement. 相似文献
238.
Angelina I. Mellentin Lotte Skøt Thomas W. Teasdale Thomas Habekost 《Scandinavian journal of psychology》2013,54(4):292-299
Decision‐making impairment, as measured by the Iowa Gambling Task (IGT), is a consistent finding among individuals with substance use disorder (SUD). We studied how this impairment is influenced by co‐morbid antisocial personality disorder (ASPD) and conscious knowledge of the task. Three groups were investigated: SUD individuals without co‐morbid ASPD (n = 30), SUD individuals with co‐morbid ASPD (n = 16), and healthy controls (n = 17). Both SUD and SUD+ASPD participants had poor overall IGT performance. A block‐by‐block analysis revealed that SUD participants exhibited slow but steady improvement across the IGT, whereas SUD+ASPD participants exhibited initial normal improvement, but dropped off during the last 40 trials. Conscious knowledge of the task was significantly correlated to performance for controls and SUD participants, but not for SUD+ASPD participants. Our findings suggest that decision‐making proceeds differently in SUD and SUD+ASPD individuals due to differences in acquisition and application of conscious knowledge. 相似文献
239.
After performing such solitary decision making tasks as the Iowa Gambling Task (IGT) and the Game of Dice Task (GDT), we expected that changes will occur in Extraversion trait measured by a short Hungarian Big Five Inventory (BFI). We also hypothesized that ego-resiliency (Block, 2002)—a dimension measuring the ability to adapt to situational demands—will be linked to the magnitude of Extraversion change. After a pre-task measurement of the Big Five traits and ego-resiliency, participants (N = 93) completed the IGT and the GDT tasks. After each task, they filled out the BFI again. Pre- and post-task Big Five trait values showed significant differences. Participants reported lower post task scores on the Extraversion dimension and the magnitude of Extraversion change between pre- and post-task measurements correlated with ego-resiliency. The results highlight some short term effects of contextual factors influencing self-characterizations in BFI dimensions. Especially, individuals with high ego-resiliency give characteristically more introverted self-characterization after solitary tasks. The present results show an example of how the interplay between contextual factors and ego-resiliency can modify self-characterization within a very short period of time. 相似文献
240.
People with high level of trait mindfulness are more likely to maintain an open and present-focused awareness and attention. Whereas a positive link between trait mindfulness and well-being has been established, its influence on real-world performance has not been fully addressed. In Study 1, we validated the Freiburg Mindfulness Inventory (FMI) in a Chinese sample (N = 294) and found that a two-dimensional solution (a presence factor and an acceptance factor) best fit the data. In Study 2, using this validated scale, we directly investigated the influence of trait mindfulness on task and safety performance. In a sample of 136 Chinese nuclear power plant operators, it was found that trait mindfulness interacted with task complexity to influence performance. For high-complexity-task holders (the control room operators), the presence factor was positively related to their task and safety performance; for the low-complexity-task holders (the field operators), the presence factor had no influence on safety performance but a negative influence on task performance. The acceptance factor did not have any meaningful influences. These results suggest that the benefit of being mindful outweighs its cost for complex but not simple tasks. Implications are discussed. 相似文献