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191.
Previous studies show that decision makers (DMs) lie more to avoid a loss than achieve a gain. Two compelling mechanisms might explain this observation. One assumes that lying is a risky activity and relates to the shape of the monetary value function described by prospect theory, which assumes (a) increased risk taking for loss frames and (b) an asymmetry between the perceived values of losses and gains. The other relates to the importance of self-esteem functions as expressed in self-concept maintenance models, self-esteem issues being weighed against monetary issues. This alternative explanation assumes that a loss frame serves as a factor lowering moral considerations. We report an experimental study presenting sets of lotteries to DMs, once in a moral context and once in a traditional probabilistic context. The results show that DMs take less risk when lotteries are presented in a moral context. It is also shown that DMs take more risk for losses than gains, this holding for both the moral and probabilistic contexts. This latter result suggests that loss/gain asymmetry can be completely explained by prospect theory factors, and framing makes no difference to the valuing of moral considerations.  相似文献   
192.
193.
Social interactions with other conspecifics affect food selection in mammals. A previous study suggested that male mice attenuate conditioned taste aversion (CTA) by lithium chloride after interacting with an unfamiliar male conspecific. The present study was designed to (a) examine whether interactions with a familiar conspecific would attenuate CTA and (b) investigate sex differences in the social attenuation of CTA in mice. Results indicated that interacting with a familiar conspecific of the same sex following poisoning attenuated conditioned taste aversions only in male mice. The results suggest that the familiarity of conspecifics was not a critical factor in the social attenuation of CTA. Discrepancies between present and previous findings are discussed.  相似文献   
194.
This study examined whether, and if so by what mechanism, changes in relative attribute variability can elicit a decoy effect. We argue and demonstrate that when only the relative variability of the attribute values in the choice set are manipulated (i.e., a frequency-only manipulation), decoy effects are observed consistent with predictions made by the Context-Dependent Weighting hypothesis as formulated by Huber et al. [Huber, J., Payne, J.W., & Puto, C. (1982). Adding asymmetrically dominated alternatives: Violations of regularity and the similarity hypothesis. Journal of Consumer Research, 10, 31–44.]. On the surface, our results appear to contravene earlier refutations of the Context-Dependent Weighting model. However, additional results from explicit tests of the purported casual mechanism (i.e., context-dependent attribute weight changes) suggest that decision-makers’ perceived importance of dimensions did not shift in response to our manipulation, making the Loss Aversion model a more viable explanation. Finally, results from a written protocol analysis suggest that many decision-makers were unaware, or at least unable to accurately verbalize, the influence of the context. Most decision-makers purported that they had made choices on the basis of their a priori beliefs about the relative importance of attributes despite the fact that there was clear evidence of context effects. Overall, our results underscore the importance of gathering multiple types of evidence for preference shifts in order to fully understand the mechanisms underlying decision-making.  相似文献   
195.
Recent evidence suggests that drug-induced conditioned taste avoidance may be mediated by conditioned fear (e.g., Parker, 2003). The experiments reported here evaluated the effect of exposure to a drug-paired flavor on open arm exploration in an elevated plus maze (EPM), a measure of fear. When rats were tested on a familiar (trial 2) EPM, but not on a novel (trial 1) EPM, prior exposure to a lithium-paired saccharin solution enhanced open arm activity relative to saline-paired saccharin. On the other hand, when rats were exposed to lithium-paired saccharin during plus maze exposure, they displayed suppressed open arm activity relative to unpaired controls when tested in a familiar maze. The pattern of results was specific to the conditional affective properties of the taste, because exposure to unconditional sickness produced by administration of lithium, and unconditionally unpalatable quinine solution did not produce this pattern. These results were interpreted in terms of the opponent process model of motivation; that is, exposure to a lithium-paired flavor elicits conditioned fear which is immediately followed by conditioned relief when the exposure is terminated. On the other hand, exposure to an amphetamine-paired flavor either before or during EPM testing enhanced open arm exploration. Since the strength of taste avoidance did not differ among amphetamine and lithium conditioned rats, these results provide further evidence that the nature of a saccharin-lithium association differs from that of a saccharin-amphetamine association.  相似文献   
196.
Two experiments were conducted to study overshadowing of extinction in a conditioned taste aversion preparation. In both experiments, aversive conditioning with sucrose was followed by extinction treatment with either sucrose alone or in compound with another taste, citric acid. Experiment 1 employed a simultaneous compound extinction treatment and found results indicative of overshadowing of extinction. By contrast, Experiment 2, in which extinction treatment involved serial compound presentations, failed to obtain evidence of overshadowing of extinction. The results of Experiment 2 indicate that the serial presentation of two tastes was processed as equivalent to the separate presentation of the tastes. The results are discussed in relation to: (1) Convergent evidence from research on latent inhibition, (2) competing theories of learning and, (3) their possible adaptive value in food-selection learning.  相似文献   
197.
Subjects’ decisions in multiple-choice tests are an interesting domain for the analysis of decision making under uncertainty. When the test is graded using a rule that penalizes wrong answers, each item can be viewed as a lottery where a rational examinee would choose whether to omit (sure reward) or answer (take the lottery) depending on risk aversion and level of knowledge. We formalize students as heterogeneous decision makers with different risk attitudes and levels of knowledge. Building on IRT, we compute the optimal penalty given students’ optimal behavior and the trade-off between bias and measurement error. Although MCQ examinations are frequently used, there is no consensus as to whether a penalty for wrong answers should be used or not. For example, examinations for medical licensing in some countries include MCQ sections with penalty while in others there is no penalty for wrong answers. We contribute to this discussion with a formal analysis of the effects of penalties; our simulations indicate that the optimal penalty is relatively high for perfectly rational students but also when they are not fully rational: even though penalty discriminates against risk averse students, this effect is small compared with the measurement error that it prevents.  相似文献   
198.
Within Western cultural traditions, the idea that parents should talk about the death of their child with each other is deeply rooted. However, across bereaved parent couples there are wide variations in communication about their grief with each other. In this study, we explored the experiences of bereaved couples related to the process of talking and not talking. We used a thematic coding approach to analyze 20 interviews with 26 bereaved parents (11 interviewed as couples, four as individuals). Four main meanings emerged out of our analysis: not talking because of the inadequacy and pointlessness of words in grief, not talking as a way to regulate emotions in daily life, not talking as an expression of a personal, intimate process, and not talking because the partner has the same loss but a different grief process. In addition, we found that the process of talking and not talking can partly be understood as an emotional responsive process on an intrapersonal and interpersonal level. In this process partners search for a bearable distance from their own grief and their partner's, and attune with their relational context. A better understanding of this process is sought in a dialectical approach, emphasizing the value of both talking and not talking in a tense relationship with each other. Implications for clinical work are described.  相似文献   
199.
This research proposes the existence of a hitherto undocumented attitude related to food wastage: the attitude of food‐waste‐aversion. We develop a 6‐item scale including affective, cognitive, and conative components to measure this attitude and empirically investigate its properties in two countries using novel datasets. We test for food‐waste‐aversion scale's convergent validity by demonstrating that it is correlated in the expected direction with five theoretically related constructs—frugality, social responsibility, spendthriftness, self‐control, and materialism (Studies 1a and 1b)—and with BMI (Studies 2 and 3). We provide more indirect evidence of the scale's convergent validity by documenting that the link between food‐waste‐aversion and BMI is attenuated among those who practice refrigerating leftovers (Study 3). We also document that the food‐waste‐aversion scale is distinct from general waste aversion and external meal‐cessation rules, thus providing evidence of discriminant validity (Studies 1a, 1b, and 1c). Taken together, these results provide construct validity for the novel construct of food‐waste‐aversion. We discuss the theoretical and substantive contributions of our findings.  相似文献   
200.
This paper explores sound infused creative responses to grief and related emotions of loss and landscape in the context of the tidal Severn Estuary (UK) and its particular sonic qualities. We draw principally on the practice of artist Louisa Fairclough, linking to wider discussions of emotion, sound and the body, in shared autotopological explorations of self and family in landscape. Like other estuaries, the Severn Estuary is a deeply rich (in socio-ecological terms) landscape which includes the tidal liminalities of the lower reaches of the Severn river, the mid estuary, and the lower areas which merge into open sea. The whole estuary, in geomorphological, ecological, and related social terms, is particularly dynamic as it has the second highest tidal range in the world. This means that vast volumes of brackish water wash up and down the estuary in a series of rhythmic cycles which play across and between day, month and season, mixing physical spaces and processes (e.g. land-sea; salt-fresh water). This ceaseless ebb and flow brings marked spatial, visual and aural richness to the estuary and places along its shores. This includes the Severn bore which, when at maximum height, is a powerful tidal wave washing up the upper estuary and tidal river with a loud sonic richness. Owain Jones (geographer) has previously written on this landscape and its memorial emotional qualities in relation to his family history and challenged geographical self. Louisa Fairclough (artist) has re-turned to it as performative art practice, to sleep by the River Severn, and produces a series of works consisting of field recordings, drawings and a series of installations of expanded films. These use river sounds and vocal recordings to interact with the tidal landscape and its margins in creative expressions of grief. This paper sets out these works, their background, shared responses to the estuary, and explores in particular the sonic registers of the landscape which, for us, listen, and speak to, loss and trauma.  相似文献   
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