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131.
The Journal of Value Inquiry - 相似文献
132.
133.
Morgan M Dillenburger B Raphael S Solomon JA 《Attention, perception & psychophysics》2012,74(1):185-193
Psychometric sensory discrimination functions are usually modeled by cumulative Gaussian functions with just two parameters, their central tendency (μ) and their slope (1/σ). These correspond to Fechner's "constant" and "variable" errors, respectively. Fechner pointed out that even the constant error could vary over space and time and could masquerade as variable error. We wondered whether observers could deliberately introduce a constant error into their performance without loss of precision. In three-dot vernier and bisection tasks with the method of single stimuli, observers were instructed to favour one of the two responses when unsure of their answer. The slope of the resulting psychometric function was not significantly changed, despite a significant change in central tendency. Similar results were obtained when altered feedback was used to induce bias. We inferred that observers can adopt artificial response criteria without any significant increase in criterion fluctuation. These findings have implications for some studies that have measured perceptual "illusions" by shifts in the psychometric functions of sophisticated observers. 相似文献
134.
Pastötter B Schicker S Niedernhuber J Bäuml KH 《Journal of experimental psychology. Learning, memory, and cognition》2011,37(2):287-297
In multiple-list learning, retrieval during learning has been suggested to improve recall of the single lists by enhancing list discrimination and, at test, reducing interference. Using electrophysiological, oscillatory measures of brain activity, we examined to what extent retrieval during learning facilitates list encoding. Subjects studied 5 lists of items in anticipation of a final cumulative recall test and did either a retrieval or a no-retrieval task between study of the lists. Retrieval was from episodic memory (recall of the previous list), semantic memory (generation of exemplars from an unrelated category), or short-term memory (2-back task). Behaviorally, all 3 forms of retrieval enhanced recall of both previously and subsequently studied lists. Physiologically, the results showed an increase of alpha power (8-14 Hz) from List 1 to List 5 encoding when no retrieval activities were interpolated but no such increase when any of the 3 retrieval activities occurred. Brain-behavior correlations showed that alpha-power dynamics from List 1 to List 5 encoding predicted subsequent recall performance. The results suggest that, without intermittent retrieval, encoding becomes ineffective across lists. In contrast, with intermittent retrieval, there is a reset of the encoding process for each single list that makes encoding of later lists as effective as encoding of early lists. 相似文献
135.
Our study examined whether traditional attitudes of female colleagues toward the male role negatively impact the psychological health of German men in non-traditional occupations and whether these relationships are mediated by social stressors at work. Traditional attitudes are presented as a threefold concept: Attitudes of female colleagues toward male anti-femininity, status, and toughness were measured. One hundred and thirteen men and 174 of their female colleagues from eastern parts of Germany and working in the healthcare and educational sectors completed hard-copy questionnaires. We used bootstrapped regression models to test for direct effects, controlling for autonomy, working hours, professional tenure, and sector of work. Bootstrapping strategies were also used for the analysis of indirect effects, even considering controls. The attitudes of female colleagues toward male anti-femininity were directly related to heightened depressive moods and lowered job satisfaction. For the attitudes of female colleagues toward male status, or male toughness we found no such direct relationships. Only indirect effects of female colleagues?? attitudes toward male status, or male toughness on men??s job satisfaction through social stressors were found. The study provides theoretical reasoning and empirical evidence for the importance of female colleagues?? attitudes and interpersonal conflicts at work for German men in non-traditional occupations. 相似文献
136.
Julia Peters 《European Journal of Philosophy》2011,19(1):85-106
Abstract: Hegel's theory of tragedy is often considered to be primarily a theory of the objective powers involved in tragic conflicts—for Hegel, these are paradigmatically competing ethical notions—and of the rationality which underlies and drives such conflicts. Such a view follows naturally from a close reading of Hegel's discussion of classical Greek tragedy in his Lectures on Aesthetics. However, this view gives rise to the question of whether Hegel's theory of tragedy can account for the significance of tragic experience, in particular the experience of tragic suffering; it has been argued repeatedly that it cannot. In contrast, I want to suggest in this paper that a theory of tragic experience can be derived from Hegel's Phenomenology of Spirit. This Hegelian theory of tragic experience, I argue, should be understood as complementing rather than challenging Hegel's theory of objective tragic conflict. 相似文献
137.
Malkki HA Donga LA de Groot SE;NeuroBSIK Mouse Phenomics Consortium Battaglia FP Pennartz CM 《Neurobiology of learning and memory》2011,96(2):280-287
Extinction of instrumental responses is an essential skill for adaptive behavior such as foraging. So far, only few studies have focused on extinction following appetitive conditioning in mice. We studied extinction of appetitive operant lever-press behavior in six standard inbred mouse strains (A/J, C3H/HeJ, C57BL/6J, DBA/2J, BALB/cByJ and NOD/Ltj) and eight recombinant inbred mouse lines. From the response rates at the end of operant and extinction training we computed an extinction index, with higher values indicating better capability to omit behavioral responding in absence of reward. This index varied highly across the mouse lines tested, and the variability was partially due to a significant heritable component of 12.6%.To further characterize the relationship between operant learning and extinction, we calculated the slope of the time course of extinction across sessions. While many strains showed a considerable capacity to omit responding when lever pressing was no longer rewarded, we found a few lines showing an abnormally high perseveration in lever press behavior, showing no decay in response scores over extinction sessions.No correlation was found between operant and extinction response scores, suggesting that appetitive operant learning and extinction learning are dissociable, a finding in line with previous studies indicating that these forms of learning are dependent on different brain areas. These data shed light on the heritable basis of extinction learning and may help develop animal models of addictive habits and other perseverative disorders, such as compulsive food seeking and eating. 相似文献
138.
Ola Svenson Gabriella Eriksson Ilkka Salo Ellen Peters 《Transportation Research Part F: Traffic Psychology and Behaviour》2011,14(6):504-511
How are driving speeds integrated when speeds vary along a route? In a first study, we examined heuristic processes used in judgments of mean speed when the mean speeds on parts of the trip varied. The judgments deviated systematically from objective mean speeds because the distances driven at different speeds were given more weight than travel time spent on the different distances. The second study showed that when there was a 10–15 min pause during a travel the effect on the mean speed decrease was underestimated for driving speeds of 90 km/h and higher. In the third study, the objective mean speeds and the subjective biased mean speed judgments were used to predict choices between routes with different speed limits. The results showed that subjective judgments predicted decisions to maximize mean speed significantly better than objective mean speeds. Finally, some applied and basic research implications of the results were discussed. 相似文献
139.
Marques L LeBlanc N Weingarden H Greenberg JL Traeger LN Keshaviah A Wilhelm S 《Body image》2011,8(2):163-167
Differences in the presentation of clinical features of body dysmorphic disorder (BDD) across ethnic groups have received little investigation. The current study assessed BDD symptoms in an ethnically diverse sample of adults (n=401) using an online survey. Participants completed self-report measures assessing BDD symptoms, body parts of concern and BDD behaviors. Compared to Caucasian participants, no significant differences were found in body parts or behaviors reported by Latino or African American participants. Significant group differences did emerge between Asian and Caucasian participants. Specifically, Asians reported more concern with straight hair and dark skin and fewer body shape concerns than Caucasians. Asians also endorsed lower rates of grooming, touching body parts, and camouflaging and higher rates of exercise compared to Caucasians. Although most clinical features of BDD appear similar across ethnic groups, results showed some differences in body parts and behaviors between Caucasians and Asian Americans with BDD symptoms. 相似文献
140.
Torbeyns J De Smedt B Peters G Ghesquière P Verschaffel L 《British journal of psychology (London, England : 1953)》2011,102(3):585-597
This study examined adults' use of indirect addition and direct subtraction strategies on multi-digit subtractions in the number domain up to 1,000. Seventy students who differed in their level of arithmetic ability solved multi-digit subtractions in one choice and two no-choice conditions. Against the background of recent findings in elementary subtraction, we manipulated the size of the subtrahend compared to the difference and only selected items with large distances between these two integers. Results revealed that adults frequently and efficiently apply indirect addition on multi-digit subtractions, yet adults with higher arithmetic ability performed more efficiently than those with lower arithmetic ability. In both groups, indirect addition was more efficient than direct subtraction both on subtractions with a subtrahend much larger than the difference (e.g., 713 - 695) and on subtractions with a subtrahend much smaller than the difference (e.g., 613 - 67). Unexpectedly, only adults with lower arithmetic ability fitted their strategy choices to their individual strategy performance skills. Results are interpreted in terms of mathematical and cognitive perspectives on strategy efficiency and adaptiveness. 相似文献