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741.
Verbruggen F Logan GD Liefooghe B Vandierendonck A 《Journal of experimental psychology. Human perception and performance》2008,34(2):413-426
Repetition priming and between-trial control adjustments after successful and unsuccessful response inhibition were studied in the stop-signal paradigm. In 5 experiments, the authors demonstrated that response latencies increased after successful inhibition compared with trials that followed no-signal trials. However, this effect was found only when the stimulus (Experiments 1A-4) or stimulus category (Experiment 3) was repeated. Slightly different results were found after trials on which the response inhibition failed. In Experiments 1A, 2, and 4, response latencies increased after unsuccessful inhibition trials compared with after no-inhibition trials, and this happened whether or not the stimulus repeated. Based on these results, we suggest that the aftereffects of successful response inhibition are primarily due to repetition priming, although there was evidence for between-trial control adjustments when inhibition failed. 相似文献
742.
Verbruggen F Schneider DW Logan GD 《Journal of experimental psychology. Human perception and performance》2008,34(5):1212-1228
Multitasking was studied in the stop-change paradigm, in which the response for a primary GO1 task had to be stopped and replaced by a response for a secondary GO2 task on some trials. In 2 experiments, the delay between the stop signal and the change signal was manipulated to determine which task goals (GO1, GO2, or STOP) were involved in performance and to determine whether the goals were activated in series or in parallel. As the delay increased, the probability of responding on stop trials changed very little, but GO2 task reaction times decreased substantially. Such effects are consistent with both a nondeterministic serial model (in which the GO1 goal is replaced by the STOP goal, which is subsequently replaced by the GO2 goal) and a limited-capacity parallel model (in which stopping and GO2 processing occur concurrently) with a capacity-sharing proportion that resembles serial processing. 相似文献
743.
744.
Response inhibition in the stop-signal paradigm 总被引:1,自引:0,他引:1
Response inhibition is a hallmark of executive control. The concept refers to the suppression of actions that are no longer required or that are inappropriate, which supports flexible and goal-directed behavior in ever-changing environments. The stop-signal paradigm is most suitable for the study of response inhibition in a laboratory setting. The paradigm has become increasingly popular in cognitive psychology, cognitive neuroscience and psychopathology. We review recent findings in the stop-signal literature with the specific aim of demonstrating how each of these different fields contributes to a better understanding of the processes involved in inhibiting a response and monitoring stopping performance, and more generally, discovering how behavior is controlled. 相似文献
745.
Culture-specific personality correlates of anxiety among Chinese and Caucasian college students 总被引:1,自引:0,他引:1
The present study investigated the relationship between a set of personality constructs (i.e. perfectionism, independent-interdependent self-construal, and collective self-esteem) and trait and social anxiety among 324 Mainland Chinese and 333 Caucasian college students. It was hypothesized that the strength of the correlation between these personality factors and anxiety would be different for the two samples. The results indicated that socially prescribed perfectionism was a better predictor of social anxiety for the Chinese participants, but of trait anxiety for the Caucasian participants. Independent self-construal predicted social anxiety better for the Caucasians than for the Chinese. Overall, aspects of collective self-esteem were more correlated with anxiety among the Chinese than the Caucasians. The authors argued that the findings can be used to improve multicultural counselling in China and the USA and to provide more culturally specific interventions to clients having anxiety disorders. 相似文献
746.
Distinct contributions of the basolateral amygdala and the medial prefrontal cortex to learning and relearning extinction of context conditioned fear 下载免费PDF全文
We studied the roles of the basolateral amygdala (BLA) and the medial prefrontal cortex (mPFC) in learning and relearning to inhibit context conditioned fear (freezing) in extinction. In Experiment 1, pre-extinction BLA infusion of the NMDA receptor (NMDAr) antagonist, ifenprodil, impaired the development and retention of inhibition but post-extinction infusion spared retention. Pre-extinction infusion of the GABA(A) agonist, muscimol, depressed freezing and impaired retention as did post-extinction infusion. In Experiment 2, pre-extinction mPFC infusion of ifenprodil spared the development of inhibition whereas muscimol depressed freezing. Both impaired retention when infused pre- or post-extinction. Thus, the development of inhibition involves NMDAr activation in the BLA, whereas its consolidation involves both NMDAr activation in the mPFC and NMDAr-independent mechanisms in the BLA. In Experiment 3, BLA infusion of ifenprodil impaired relearning and retention of inhibition when infused before but did not impair retention when infused after re-extinction. BLA infusion of muscimol depressed freezing but did not impair retention when infused before or after re-extinction. In Experiment 4, mPFC infusion of ifenprodil impaired relearning when infused before re-extinction, whereas muscimol depressed responses. Both drugs impaired retention when infused into the mPFC before or after re-extinction. Thus, relearning to inhibit fear responses involves NMDAr activation in both the BLA and mPFC and consolidation of the inhibitory memory involves NMDAr activation in the mPFC. However, relearning and consolidation occur in the absence of neuronal activity within the BLA. We propose that NMDAr in the mPFC supports relearning inhibition when the BLA is inactivated. 相似文献
747.
Norman R. Brown Peter J. Lee Mirna Krslak Frederick G. Conrad Tia G.B. Hansen Jelena Havelka John R. Reddon 《Psychological science》2009,20(4):399-405
ABSTRACT— Memories of war, terrorism, and natural disaster play a critical role in the construction of group identity and the persistence of group conflict. Here, we argue that personal memory and knowledge of the collective past become entwined only when public events have a direct, forceful, and prolonged impact on a population. Support for this position comes from a cross-national study in which participants thought aloud as they dated mundane autobiographical events. We found that Bosnians often mentioned their civil war and that Izmit Turks made frequent reference to the 1999 earthquake in their country. In contrast, public events were rarely mentioned by Serbs, Montenegrins, Ankara Turks, Canadians, Danes, or Israelis. Surprisingly, historical references were absent from (post–September 11) protocols collected in New York City and elsewhere in the United States. Taken together, these findings indicate that it is personal significance, not historical importance, that determines whether public events play a role in organizing autobiographical memory. 相似文献
748.
波动不对称(FA)是压力的随机性引发双侧完美对称偏离的现象,这是个体无力免受发展中不利因素(如早期营养不良)侵害的一个标志。比较个体口腔两侧牙齿的大小是一种测量FA的方法。本研究汇集了10个物种共296名个体的牙齿测量结果,测量对象包括黑猩猩(学名Pan troglodytes)、猩猩(学名Pongo pygmaeus)、大猩猩(学名Gorilla gorilla)、智人(学名Homo sapiens),以及许多化石人。分析发现,猩猩样本牙齿的FA水平要显著低于大猩猩、黑猩猩、直立人、尼安德特人和智人样本的FA水平。而与之相反的是,智人与尼安德特人样本的牙齿FA水平要显著高于其它任何一种巨猿样本的FA水平。该文提出了有关缓和的选择压力的解释 相似文献
749.
Schmitt N Oswald FL Kim BH Imus A Merritt S Friede A Shivpuri S 《The Journal of applied psychology》2007,92(1):165-179
To determine whether profiles of predictor variables provide incremental prediction of college student outcomes, the authors 1st applied an empirical clustering method to profiles based on the scores of 2,771 entering college students on a battery of biographical data and situational judgment measures, along with SAT and American College Test scores and high school grade point average, which resulted in 5 student groups. Performance of the students in these clusters was meaningfully different on a set of external variables, including college grade point average, self-rated performance, class absenteeism, organizational citizenship behavior, intent to quit their university, and satisfaction with college. The 14 variables in the profile were all significantly correlated with 1 or more of the outcome measures; however, nonlinear prediction of these outcomes on the basis of cluster membership did not add incrementally to a linear-regression-based combination of these 14 variables as predictors. 相似文献
750.
Although role theory has long described how expectations shape role behavior, little empirical research has examined differences among work role requirements and how features of the discrete occupational context may influence the extent to which role expectations are shared among role holders. The authors examined consensus in work role requirements from a sample of over 20,000 incumbents across 98 occupations. They found that consensus systematically decreased as work role requirements ranged from molecular tasks to responsibilities to molar traits. In addition, they found that consensus in these work role requirements was significantly influenced by the amount of interdependence, autonomy, and routinization present in the surrounding task and social contexts. 相似文献