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161.
Drummond PD Back K Harrison J Helgadottir FD Lange B Lee C Leavy K Novatscou C Orner A Pham H Prance J Radford D Wheatley L 《Behaviour research and therapy》2007,45(7):1601-1608
Changes in facial blood flow were investigated during an introductory conversation, delivering a speech, and listening to the speech afterwards in 16 people with a fear of blushing and 16 controls. It was hypothesized that fear of blushing would be associated with high ratings of self-reported blushing intensity and embarrassment during the tasks, and with persistence of the blushing reaction between tasks. Embarrassment and self-reported blushing intensity were greater in the fear-of-blushing group than in controls throughout the experiment. Increases in facial blood flow were similar in the two groups during each of the tasks. However, blushing dissipated more slowly after each task in the fear-of-blushing group than in controls, resulting in an incremental increase in facial blood flow over the course of the experiment. The slow recovery after an episode of blushing might result in physiological or social cues that help to maintain a fear of blushing. 相似文献
162.
163.
The Psychological Record - Olfactory memory is especially persistent. The current study explored whether this applies to a form of perceptual learning, in which experience of an odor mixture... 相似文献
164.
Some researchers argue that task switching involves task-set reconfiguration-that is, changing the existing task set to perform
a different task. Although this idea is intriguing, it is often unclear what is reconfigured and which processes are involved
in reconfiguration. We addressed these issues by defining task sets, identifying differences between them, and obtaining evidence
that was diagnostic of reconfiguration. In two experiments, subjects performed relative judgment tasks that involved comparing
a target with a reference point that repeated or switched across trials. The task was the same on every trial, but the task
set was not, because a task-set parameter-the reference point-had to be changed. Target-reference point distance effects that
changed with the reference point provided diagnostic evidence that reconfiguration occurred, and this reconfiguration led
to switch costs. We discuss how our approach can be generalized to define reconfiguration more clearly in other task-switching
situations. nt|mis|This research was supported by Grants BCS 0133202 and BCS 0446806 from the National Science Foundation
to G.D.L. 相似文献
165.
People frequently infer unknown aspects of an entity based on their knowledge about that entity. The current study reports
a novel phenomenon, an inductive bias people have in making such inferences. Upon learning that one symptom causes another
in a person, both undergraduate students (Experiment 1) and clinicians (Experiment 2) judged that an unknown feature associated
with the cause-symptom was more likely to be present in that person than an unknown feature associated with the effect-symptom.
Thus, these findings suggest a specific mechanism in which causal explanations influence one’s representation of and inferences
about an entity. Implications for clinical reasoning and associative models of conceptual knowledge are discussed. 相似文献
166.
Caroline Coffin 《Argumentation》2009,23(4):513-530
In contemporary educational contexts there is considerable variation in how argumentation works and what forms and styles
it takes. Influencing factors include the educational purpose and task, the level of education, and the discipline or curriculum
subject in which it occurs. This paper offers a theoretical framework and a set of multimodal analytical tools which can provide
a rich and systematic account of such variation. Using naturalistic data from three different educational sites I illustrate
how such a framework reveals the diverse ways in which students use language and other modes of meaning making as they engage
in processes of argumentation. In particular, I consider how new technologies have caused shifts in the distribution of meaning
across different semiotic modes (such as visual images, space, colour and graphics) and how this impacts upon both argumentation
process and product. The educational implications of such changes are also considered. 相似文献
167.
ABSTRACT— Everyone knows that attention to the details disrupts skilled performance, but little empirical evidence documents this fact. We show that attention to the hands disrupts skilled typewriting. We had skilled typists type words preceded by cues that told them to type only the letters assigned to one hand or to type all of the letters. Cuing the hands disrupted performance markedly, slowing typing and increasing the error rate (Experiment 1); these deleterious effects were observed even when no keystrokes were actually inhibited (Experiment 3). However, cuing the same letters with colors was not disruptive (Experiment 2). We account for the disruption with a hierarchical control model, in which an inner loop controls the hands and an outer loop controls what is typed. Typing letters using only one hand requires the outer loop to monitor the inner loop's output; the outer loop slows inner-loop cycle time to increase the likelihood of inhibiting responses with the unwanted hand. This produces the disruption. 相似文献
168.
Woon Chia Liu C. K. John Wang Oon Seng Tan Jessie Ee Caroline Koh 《The British journal of educational psychology》2009,79(1):87-106
Background The project work (PW) initiative was launched in 2000 by the Ministry of Education, Singapore, to encourage application of knowledge across disciplines, and to develop thinking, communication, collaboration, and metacognitive skills. Although PW has been introduced for a few years, few studies have examined the motivation of students in PW, especially with the use of the recently proposed 2 × 2 achievement goal framework. Aim To use a cluster analytic approach to identify students' achievement goal profiles at an intra‐individual level, and to examine their links to various psychological characteristics and perceived outcomes in PW. Sample Participants were 491 Secondary 2 students (mean age=13.78, SD = 0.77) from two government coeducational schools. Method Cluster analysis was performed to identify distinct subgroups of students with similar achievement goal profiles. One‐way MANOVAs, followed by post hoc Tukey HSD tests for pairwise comparisons were used to determine whether there was any significant difference amongst clusters in terms of the psychological characteristics and perceived outcomes in PW. Results Four distinct clusters of students were identified. The cluster with high achievement goals and the cluster with moderately high goals had the most positive psychological characteristics and perceived outcomes. In contrast, the cluster with very low scores for all four achievement goals had the most maladaptive profile. Conclusio The study provides support for the 2 × 2 achievement goal framework, and demonstrates that multiple goals can operate simultaneously. However, it highlights the need for cross‐cultural studies to look into the approach–avoidance dimension in the 2 × 2 achievement goal framework. 相似文献
169.
Anne C. Miers Anke W. Blöte Caroline L. Bokhorst P. Michiel Westenberg 《Behaviour research and therapy》2009,47(12):1043-1049
The current study investigated whether negatively biased self-evaluations of nervousness and social skills are related to how well an individual actually performs, that is performance level. Sixty-eight high socially anxious and 68 control participants (age range 9–17 years) gave a 5 min speech in front of a pre-recorded audience of same age peers and a teacher. Participants' evaluations immediately after the task were measured on a number of performance dimensions. Three independent observers also evaluated recordings of the speech performances. Participants were further divided into good and bad performers based on their actual performance level as judged by the observers. Self-evaluations of the high socially anxious participants were negatively biased for nervous appearance regardless of how well they actually performed. In contrast, a negative bias for social skills only occurred in the high anxious participants with a good performance. The social skill evaluations of the poor performers appear warranted. Taking actual performance level into account may help to clarify the exact nature of a negative bias in socially anxious youth and has clear implications for the choice of treatment approach. 相似文献
170.
Using a name-based categorization task, Nazzi found in 2005 that French-learning 20-month-olds can make use of one-feature consonantal contrasts between new labels but fail to do so with one-feature vocalic contrasts. This asymmetry was interpreted as developmental evidence for the proposal that consonants play a more important role than vowels at the lexical level. In the current study using the same task, we first show that by 30 months French-learning infants can make use of one-feature vocalic contrasts (e.g., /pize/–/pyze/). Second, we show that in a situation where infants must neglect either a consonantal one-feature change or a vocalic one-feature change (e.g., match a /pide/ with either a /tide/ or a /pyde/), both French- and English-learning 30-month-olds choose to neglect the vocalic change rather than the consonantal change. We argue that these results suggest that by 30 months of age, infants still give less weight to vocalic information than to consonantal information in a lexically related task even though they are able to process fine vocalic information. 相似文献