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91.
Sebastian Olschewski Pavel Sirotkin Jörg Rieskamp 《The British journal of mathematical and statistical psychology》2022,75(2):252-292
A standard approach to distinguishing people’s risk preferences is to estimate a random utility model using a power utility function to characterize the preferences and a logit function to capture choice consistency. We demonstrate that with often-used choice situations, this model suffers from empirical underidentification, meaning that parameters cannot be estimated precisely. With simulations of estimation accuracy and Kullback–Leibler divergence measures we examined factors that potentially mitigate this problem. First, using a choice set that guarantees a switch in the utility order between two risky gambles in the range of plausible values leads to higher estimation accuracy than randomly created choice sets or the purpose-built choice sets common in the literature. Second, parameter estimates are regularly correlated, which contributes to empirical underidentification. Examining standardizations of the utility scale, we show that they mitigate this correlation and additionally improve the estimation accuracy for choice consistency. Yet, they can have detrimental effects on the estimation accuracy of risk preference. Finally, we also show how repeated versus distinct choice sets and an increase in observations affect estimation accuracy. Together, these results should help researchers make informed design choices to estimate parameters in the random utility model more precisely. 相似文献
92.
Philosophical Studies - It is often argued that there are no practical reasons for belief because we could not believe for such reasons. A recent reply by pragmatists is that we can often believe... 相似文献
93.
Clay F Bowers JS Davis CJ Hanley DA 《Journal of experimental psychology. Learning, memory, and cognition》2007,33(5):970-976
Semantic and orthographic learning of new words was investigated with the help of the picture-word interference (PWI) task. In this version of the Stroop task, picture naming is delayed by the simultaneous presentation of a semantically related as opposed to an unrelated distractor word (a specific PWI effect), as well as by an unrelated word compared with a nonword (a general PWI effect). This interference is taken to reflect automatic orthographic and semantic processing. The authors observed that participants showed both types of PWI effects for newly learned words following a single study session. Interestingly, specific PWI effects were not obtained immediately after testing but did emerge a week later without additional practice. This suggests that a period of consolidation is involved in the establishment of word representations. In addition, identical PWI effects were obtained when the study and test words were presented in either the same or different letter case. This provides evidence that the newly acquired orthographic representations are coded in an abstract format. 相似文献
94.
“This way!”, “No! That way!”—3-year olds know that two people can have mutually incompatible desires
In theory of mind research, there is a long standing dispute about whether children come to understand the subjectivity of both desires and beliefs at the same time (around age 4), or whether there is an asymmetry such that desires are understood earlier. To address this issue, 3-year olds’ understanding of situations in which two persons have mutually incompatible desires was tested in two studies. Results revealed that (i) children were quite proficient at ascribing incompatible desires to two persons, and in simpler scenarios even incompatible desire-dependent emotions; (ii) children showed this proficiency even though they mostly failed the false belief task. Overall, these results suggest that there is an asymmetry such that young children come to understand the subjective nature of desires before they understand the corresponding subjectivity of beliefs. Possible explanations for this asymmetry are discussed in light of conceptual change and information-processing accounts of theory of mind development. 相似文献
95.
PD Dr. biol. hum. Regina A. Kurth Sebastian Klier Dan Pokorny Harald B. Jurkat Christian Reimer 《Psychotherapeut》2007,52(5):355-361
In a cross-sectional study of medical students we examined educational strains, health feeling, and relationship patterns. Work stress was measured using the questionnaire by Jurkat et al., health-related quality of life was measured using the Short Form- (SF-)36 Health Survey, and relationship patterns to the partner as well as to a friend were mapped using“Beziehungsmusterfragebogen“ (BeMus). Study stress was assessed as being high by 60% of the students. Consequently, 39% had not enough time for their partners und 29% had no time for own interests. The mental health averaged significantly below the norm. A high workload and discontent correlated with aggressiveness, especially in the partnership, whereas loving care towards the partner or friend correlated with a high level of satisfaction and a lower strain level. Therefore, an improvement of psychosocial competence in medical students as well as a practice-oriented preparation for the profession is needed. 相似文献
96.
have shown a small but significant impairment of autonoetic awareness or remembering involved in the episodic memory experiences of adults with Asperger's syndrome. This was compensated by an increase in experiences of noetic awareness or knowing. The question remains as to whether the residual autonoetic awareness in Asperger individuals is qualitatively the same as that of typical comparison participants. Three experiments are presented in which manipulations that have shown differential effects on different kinds of conscious awareness in memory in typical populations are employed with a sample of adults with Asperger's syndrome. The results suggest that the experiences of remembering reported by such individuals, although reduced in quantity, are qualitatively similar to those seen in the typical population. The results are discussed in the context of current theories of awareness in episodic memory. 相似文献
97.
The authors employed a virtual environment to investigate how humans use haptic and visual feedback in a simple, rhythmic object-manipulation task. The authors hypothesized that feedback would help participants identify the appropriate resonant frequency and perform online control adjustments. The 1st test was whether sensory feedback is needed at all; the 2nd was whether the motor system combines visual and haptic feedback to improve performance. Task performance was quantified in terms of work performed on the virtual inertia, ability to identify the correct rhythm, and variability of movement. Strict feedforward control was found to be ineffective for this task, even when participants had previous knowledge of the rhythm. Participants (N = 11) performed far better when feedback was available (11 times more work, 2.2 times more precise frequency, 30% less variability; p < .05 for all 3 performance measures). Using sensory feedback, participants were able to rapidly identify 4 different spring-inertia systems without foreknowledge of the corresponding resonant frequencies. They performed over 20% more work with 24% less variability when provided with both visual and haptic feedback than they did with either feedback channel alone (p < .05), providing evidence that they integrated online sensory channels. Whereas feedforward control alone led to poor performance, feedback control led to fast tuning or calibration of control according to the resonant frequency of the object, and to better control of the rhythmic movement itself. 相似文献
98.
Little direct evidence has emerged regarding the influence of switching between tasks on the performance of skills studied in the motor domain. The present study reported the results of two experiments that examined the effects of task switching on a simple object projection task, which presumably emphasized processes related to response planning and execution. The experimental task required participants to gently tap a knob to make it travel along two parallel rods until it reached a specified target distance. In both experiments, participants in the repeated conditions performed a single target distance while participants in the switched conditions alternated between two target distances. Results indicated that switching between targets degraded accuracy for the two short targets (30cm, Exp. 1; 20cm, Exp. 2). Results were consistent with the preservation of parameter values [Rosenbaum, D. A., Weber, R. J., Hazelett, W. M., & Hindorff, V. (1986). The parameter remapping effect in human performance. Evidence form tongue twisters and finger fumblers. Journal of Memory and Language, 25, 710-725; Sherwood, D. E. (2007). Separate movement planning and spatial assimilation effects in sequential bimanual aiming movements. Perceptual and Motor Skills, 105, 501-513] and suggested an additional role for persisting activation in accounting for spatial assimilation and magnitude effects. 相似文献
99.
Traditionally, liberals have confined religion to the sphere of the ‘private’ or ‘non-political’. However, recent debates
over the place of religious symbols in public spaces, state financing of faith schools, and tax relief for religious organisations
suggest that this distinction is not particularly useful in easing the tension between liberal commitments to equality on
the one hand, and freedom of religion on the other. This article deals with one aspect of this debate, which concerns whether
members of religious communities should receive exemptions from regulations that place a distinctively heavy burden on them.
Drawing on Habermas’ understanding of churches as ‘communities of interpretation’, we explore possible alternatives to both
the ‘rule-and-exemption’ approach and the ‘neutralist’ approach. Our proposal rests on the idea of mutual learning between
secular and religious perspectives. On this interpretation, what is required is (i) the generation and maintenance of public
spaces in which there could be discussion and dialogue about particular cases, and (ii) evaluation of whether the basic conditions
of moral discourse are present in these spaces. Thus deliberation becomes a touchstone for the building of a shared democratic
ethos. 相似文献
100.
ObjectiveQuestionnaires are often applied in sports psychology to measure a person's trait or state. However, the extent to which the questionnaire captures differences because of trait or state influences is often unclear. The latent state–trait (LST) theory offers the opportunity to separate both variance sources. This separation allows estimating specific reliability coefficients.DesignThe present paper gives a theoretical introduction to LST and its basic ideas. Using a real data set with N = 156 athletes we exemplify the steps necessary to derive the LST coefficients. All athletes filled out a comprehensive inventory assessing competitive anxiety on two occasions.MethodThe data are analysed with structural equation models based on LST principles.ResultsThe results confirm the questionnaire's trait saturation.ConclusionFinally, results are discussed in light of practical and theoretical implications. 相似文献