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Lydia McGrew 《Philosophical Studies》2014,168(2):569-582
Jonathan Weisberg has argued that Jeffrey Conditioning is inherently “anti-holistic” By this he means, inter alia, that JC does not allow us to take proper account of after-the-fact defeaters for our beliefs. His central example concerns the discovery that the lighting in a room is red-tinted and the relationship of that discovery to the belief that a jelly bean in the room is red. Weisberg’s argument that the rigidity required for JC blocks the defeating role of the red-tinted light rests on the strong assumption that all posteriors within the distribution in this example are rigid on a partition over the proposition that the jelly bean is actually red. But individual JC updates of propositions do not require such a broad rigidity assumption. Jeffrey conditionalizers should consider the advantages of a modest project of targeted updating focused on particular propositions rather than seeking to update the entire distribution using one obvious partition. Although Weisberg’s example fails to show JC to be irrelevant or useless, other problems he raises for JC (the commutativity and inputs problems) remain and actually become more pressing when we recognize the important role of background information. 相似文献
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Lydia M. Hopper Sara A. Price Hani D. Freeman Susan P. Lambeth Steven J. Schapiro Rachel L. Kendal 《Animal cognition》2014,17(4):835-847
Despite the importance of individual problem solvers for group- and individual-level fitness, the correlates of individual problem-solving success are still an open topic of investigation. In addition to demographic factors, such as age or sex, certain personality dimensions have also been revealed as reliable correlates of problem-solving by animals. Such correlates, however, have been little-studied in chimpanzees. To empirically test the influence of age, sex, estrous state, and different personality factors on chimpanzee problem-solving, we individually tested 36 captive chimpanzees with two novel foraging puzzles. We included both female (N = 24) and male (N = 12) adult chimpanzees (aged 14–47 years) in our sample. We also controlled for the females’ estrous state—a potential influence on cognitive reasoning—by testing cycling females both when their sexual swelling was maximally tumescent (associated with the luteinizing hormone surge of a female’s estrous cycle) and again when it was detumescent. Although we found no correlation between the chimpanzees’ success with either puzzle and their age or sex, the chimpanzees’ personality ratings did correlate with responses to the novel foraging puzzles. Specifically, male chimpanzees that were rated highly on the factors Methodical, Openness (to experience), and Dominance spent longer interacting with the puzzles. There was also a positive relationship between the latency of females to begin interacting with the two tasks and their rating on the factor Reactivity/Undependability. No other significant correlations were found, but we report tentative evidence for increased problem-solving success by the females when they had detumescent estrous swellings. 相似文献
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Fabian Alexander Ryffel Dominique Stefanie Wirz Rinaldo Kühne Werner Wirth 《Media Psychology》2014,17(4):397-419
This study examined the influence of an emotionally arousing writing style on attitude formation and change. It has been proposed that different writing styles induce attitudes based on either affect or cognition and with either high or low certainty. Previous work indicates that the interplay of these attitude characteristics determines the persuasiveness of emotional and rational media appeals. To test the hypotheses, participants in an experimental study read articles from a magazine about a fictitious attitude object. In the first step, 4 different types of attitudes varying in base and level of certainty were induced through a respectively manipulated article. In the second step, these attitudes were challenged by an additional article, which presented either an emotional or rational persuasive appeal. The results supported hypotheses on attitude induction through media stimuli and 3 of 4 hypotheses regarding the persuasiveness of emotionally and rationally written articles. 相似文献
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Recent research has shown that reward influences visual perception and cognition in a way that is distinct from the well-documented goal-directed mechanisms. In the current study we explored how task-irrelevant stimulus-reward associations affect processing of stimuli when attention is constrained and reward no longer delivered. During a training phase, participants performed a choice game, exposing them to different reward schedules for different semantic categories of natural scene pictures. In a separate test session in which no additional reward was provided, the differentially rewarded scene categories were used as task-irrelevant non-targets in a rapid serial visual presentation (RSVP) task. Participants performed a detection task on a previously non-rewarded target category. Results show that participants' sensitivity index (d′) for target detection decreased as a function of whether the reward was coupled to the distractor category during training. The semantic category of natural scenes associated with high reward caused more interference in target detection than the semantic category associated with a low reward. The same was found when new, unseen distractor pictures of the same semantic categories were used. The present findings suggest that reward can be selectively associated with high level scene semantics. We argue that learned stimulus-reward associations persistently bias perceptual processing independently of spatial shifts in attention and the immediate prospect of reward. 相似文献
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Breast cancer impacts an entire family system. The mothers of breast cancer patients are likely impacted in a variety of ways by their daughters’ diagnoses. To date, few researchers have investigated the experiences and perspectives of this population. In the present study, the authors explored how mothers of breast cancer survivors managed adversities associated with this disease and illness. Using secondary data and narrative analysis, the investigators analyzed data gathered from 30 mothers. Findings indicate that participants relied on their spirituality for the management of stress and hardship related to having a loved one with breast cancer. 相似文献
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Gander Fabian Hofmann Jennifer Ruch Willibald 《Applied research in quality of life》2021,16(2):739-751
Applied Research in Quality of Life - So far, only few studies have considered different aspects of well-being in studying losing or gaining employment. We examined life satisfaction, mental... 相似文献