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121.
Willie Hale Miranda Richmond Janet Bennett Tiffany Berzins Alexander Fields David Weber 《Journal of personality assessment》2016,98(2):200-208
In this study, we evaluated the factor structure, reliability estimates, item parameters, and differential correlates of the short form of the Intolerance of Uncertainty Scale (Carleton, Norton, &; Asmundson, 2007) in samples of undergraduate women (n = 387) and men (n = 276) ranging in age from 18 to 49 years (M = 20.20, SD = 3.91). This instrument was designed to measure 2 facets of intolerance of uncertainty—prospective anxiety and inhibitory anxiety—although total scores on the measure are often used. A major objective of this study was to determine the degree to which derivation of total versus subscale scores is empirically permissible. Comparison of a bifactor model to a unidimensional model and a 2-factor correlated traits model indicated that the bifactor model exhibited superior fit to the sample data. This model provided evidence of a strong general intolerance of uncertainty factor that was more reliable and accounted for significantly more common variance than either subscale factor. Examination of the item response theory slope parameters revealed negligible bias in the measure's items across genders. Finally, a series of simultaneous regression analyses was conducted to examine differential correlates of the measure's total scale scores for men and women. 相似文献
122.
Memorial Monitoring and Control: How Confidence and Social and Financial Consequences Affect Eyewitnesses' Reporting of Fine‐Grain Information 下载免费PDF全文
Research suggests that accessible coarse‐grain (i.e. general) information is sometimes under‐reported in memory accounts. In two experiments, socially motivating conditions were manipulated to determine whether, and under what contexts, coarse‐grain information is avoided because eyewitnesses are motivated to be specific and willing to risk accuracy. In Experiment 1, response privacy (private, public) and audience (high authority, low authority) were manipulated. Response privacy and penalty for inaccurate reporting (penalty, no penalty) were manipulated in Experiment 2. Across both experiments, eyewitnesses' confidence estimation (i.e. monitoring) was effective, suggesting that coarse‐grain information is under‐reported through poor decision making (i.e. control). Eyewitnesses avoided coarse‐grain information because they sometimes displayed a bias towards reporting fine‐grain information. This bias was more apparent, and coarse‐grain information avoiding more likely, when the perceived consequences for reporting were minimal (i.e. when in private in Experiment 1 and when no penalty for inaccuracy was imposed in Experiment 2). Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
123.
Research suggests that inexperienced individuals cannot accurately implement stimulus preference assessments given written instructions alone. Training that includes written instructions supplemented with feedback from a professional with expertise in conducting preference assessments has proven effective; unfortunately, expert-facilitated direct training may not be widely available. In the current study, we used multiple baseline designs to evaluate the efficacy of an antecedent-only self-instructional package to train staff members to implement two methods of stimulus preference assessments. Accuracy was low when participants had access to written instructions alone. When access to enhanced written instructions was provided (i.e., technical jargon was minimized; instructions included pictures, diagrams, and step-by-step examples), inexperienced staff accurately implemented the assessments. Results are discussed in terms of opportunities to disseminate behavior-analytic technologies through self-instruction and print resources. 相似文献
124.
Karsten Kenklies 《Studies in Philosophy and Education》2012,31(3):265-273
The debate concerning the relation of the theory of education and the practice of education is not new. In Germany, these discussions are an integral part of the development of educational science in the eighteenth century which is closely connected to Johann Friedrich Herbart and Friedrich Schleiermacher. Their concepts illustrate different answers upon the question of how to connect theory and practice in education. And although those answers are embedded in a very specific horizon of ethical and metaphysical ideas, the problems which are addressed in those discussions are still important in modern debates. The paper focuses upon the concepts of Herbart and Schleiermacher and presents those theories in the problematic context of the possibilities and limitations of educational theory and its importance for educational practice. 相似文献
125.
Kompus K Specht K Ersland L Juvodden HT van Wageningen H Hugdahl K Westerhausen R 《Brain and language》2012,121(3):240-247
We report fMRI and behavioral data from 113 subjects on attention and cognitive control using a variant of the classic dichotic listening paradigm with pairwise presentations of consonant-vowel syllables. The syllable stimuli were presented in a block-design while subjects were in the MR scanner. The subjects were instructed to pay attention to and report either the left or right ear stimulus. The hypothesis was that paying attention to the left ear stimulus (FL condition) induces a cognitive conflict, requiring cognitive control processes, not seen when paying attention to the right ear stimulus (FR condition), due to the perceptual salience of the right ear stimulus in a dichotic situation. The FL condition resulted in distinct activations in the left inferior prefrontal gyrus and caudate nucleus, while the right inferior frontal gyrus and caudate were activated in both the FL and FR conditions, and in a non-instructed (NF) baseline condition. 相似文献
126.
Hoppe C Fliessbach K Stausberg S Stojanovic J Trautner P Elger CE Weber B 《Brain and cognition》2012,78(1):14-27
The neurophysiological mechanisms underlying superior cognitive performance are a research area of high interest. The majority of studies on the brain-performance relationship assessed the effects of capability-related group factors (e.g. talent, gender) on task-related brain activations while only few studies examined the effect of the inherent experimental task performance factor. In this functional MRI study, we combined both approaches and simultaneously assessed the effects of three relatively independent factors on the neurofunctional correlates of mental rotation in same-aged adolescents: math talent (gifted/controls: 17/17), gender (male/female: 16/18) and experimental task performance (median split on accuracy; high/low: 17/17). Better experimental task performance of mathematically gifted vs. control subjects and male vs. female subjects validated the selected paradigm. Activation of the inferior parietal lobule (IPL) was identified as a common effect of mathematical giftedness, gender and experimental task performance. However, multiple linear regression analyses (stepwise) indicated experimental task performance as the only predictor of parietal activations. In conclusion, increased activation of the IPL represents a positive neural correlate of mental rotation performance, irrespective of but consistent with the obtained neurocognitive and behavioral effects of math talent and gender. As experimental performance may strongly affect task-related activations this factor needs to be considered in capability-related group comparison studies on the brain-performance relationship. 相似文献
127.
It has previously been shown that task performance and frontal cortical activation increase after cognitive conflict. This has been argued to support a model of attention where the level of conflict automatically adjusts the amount of cognitive control applied. Conceivably, conflict could also modulate lower-level processing pathways, which would be evident as trial-to-trial changes in domain specific activation. The present fMRI experiment used a syllable identification task where conflict is manipulated by presenting recently ignored syllables. Results showed that on trials following a high conflict trial, activation increased primarily in the planum temporale region of the left temporal cortex, an area believed to be involved in syllable discrimination. The experiment thus showed a transient, domain specific attention effect that was modulated on a trial-to-trial basis. We argue that this indicates a self-regulating system where increased levels of conflict directs resources in order to improve performance. 相似文献
128.
In social dilemmas, negotiations, and other forms of strategic interaction, mind-reading—intuiting another party’s preferences and intentions—has an important impact on an actor’s own behavior. In this paper, we present a model of how perceivers shift between social projection (using one’s own mental states to intuit a counterpart’s mental states) and stereotyping (using general assumptions about a group to intuit a counterpart’s mental states). Study 1 extends prior work on perceptual dilemmas in arms races, examining Americans’ perceptions of Chinese attitudes toward military escalation. Study 2 adapts a prisoner’s dilemma, pairing participants with outgroup targets. Study 3 employs an ultimatum game, asking male and female participants to make judgments about opposite sex partners. Study 4 manipulates perceived similarity as well as counterpart stereotype in a principal–agent context. Across the studies, we find evidence for our central prediction: higher levels of perceived similarity are associated with increased projection and reduced stereotyping. 相似文献
129.
Benetti F da Silveira CK da Silva WC Cammarota M Izquierdo I 《Neurobiology of learning and memory》2012,97(1):54-58
Early partial maternal deprivation causes long-lasting neurochemical, behavioral and brain structural effects. In rats, it causes a deficit in memory consolidation visible in adult life. Some of these deficits can be reversed by donepezil and galantamine, which suggests that they may result from an impairment of brain cholinergic transmission. One such deficit, representative of all others, is an impairment of memory consolidation, clearly observable in a one-trial inhibitory avoidance task. Recent data suggest a role of brain histaminergic systems in the regulation of behavior, particularly inhibitory avoidance learning. Here we investigate whether histamine itself, its analog SKF-91844, or various receptor-selective histamine agonists and antagonists given into the CA1 region of the hippocampus immediately post-training can affect retention of one-trial inhibitory avoidance in rats submitted to early postnatal maternal deprivation. We found that histamine, SKF-91844 and the H2 receptor agonist, dimaprit enhance consolidation on their own and reverse the consolidation deficit induced by maternal deprivation. The enhancing effect of histamine was blocked by the H2 receptor antagonist, ranitidine, but not by the H1 receptor antagonist pyrilamine or by the H3 antagonist thioperamide given into CA1 at doses known to have other behavioral actions, without altering locomotor and exploratory activity or the anxiety state of the animals. The present results suggest that the memory deficit induced by early postnatal maternal deprivation in rats may in part be due to an impairment of histamine mediated mechanisms in the CA1 region of the rat hippocampus. 相似文献
130.
In a face recognition, mini-lineup experiment we examined two aspects of the use of confidence about lineups. We modified the lineup procedure attempting to eliminate the difference in confidence–accuracy relationship between positive (old or identification) and negative (new or not present) decisions. In the modified procedure, participants: (1) selected the lineup member that best matched their memory of the target; (2) rated their confidence that the best match was indeed the target; and (3) indicated (yes/no) whether the best match was the target. Although the modified procedure produced higher accuracy than a standard simultaneous procedure, there was no evidence that it affected the confidence–accuracy relationship. Additionally, the modified procedure also allowed us to compare the extent to which confidence ratings versus binary recognition decisions better discriminated studied from unstudied faces. The results revealed a clear advantage for confidence, but indicated that binary responses were also a unique predictor. 相似文献