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91.
Culture and change blindness   总被引:2,自引:0,他引:2  
Research on perception and cognition suggests that whereas East Asians view the world holistically, attending to the entire field and relations among objects, Westerners view the world analytically, focusing on the attributes of salient objects. These propositions were examined in the change-blindness paradigm. Research in that paradigm finds American participants to be more sensitive to changes in focal objects than to changes in the periphery or context. We anticipated that this would be less true for East Asians and that they would be more sensitive to context changes than would Americans. We presented participants with still photos and with animated vignettes having changes in focal object information and contextual information. Compared to Americans, East Asians were more sensitive to contextual changes than to focal object changes. These results suggest that there can be cultural variation in what may seem to be basic perceptual processes.  相似文献   
92.
Participants studied AB word pairs and completed three recognition tests. In one recognition test each A word was presented with two distractors that did not appear on the study list. In another recognition test each B word was presented with two distractors that did not appear on the study list. In a third recognition test an AB target was presented with two distractors composed of words not on the study list. Six different groups of participants each performed the recognition tests in a different order, so that all possible orders were tested. Recognition of the A, B, and AB targets for a given study pair were independent of each other when single-word recognition preceded double-word recognition. There was almost complete independence in the reverse order. Even when recognition judgements were restricted to those for which the participants were most confident, there was independence of recognition among the three tests. A pair recognition test served as an additional study trial for the individual words; however, the reverse was not the case. All of these results were predicted by a single three-parameter mathematical model derived from the hypothesis that single-word and double-word targets had independent representations in memory.  相似文献   
93.
An unexpected stimulus often remains unnoticed if attention is focused elsewhere. This inattentional blindness has been shown to be increased under conditions of high memory load. Here we show that increasing working memory load can also have the opposite effect of reducing inattentional blindness (i.e., improving stimulus detection) if stimulus detection is competing for attention with a concurrent visual task. Participants were required to judge which of two lines was the longer while holding in working memory either one digit (low load) or six digits (high load). An unexpected visual stimulus was presented once alongside the line judgment task. Detection of the unexpected stimulus was significantly improved under conditions of higher working memory load. This improvement in performance prompts the striking conclusion that an effect of cognitive load is to increase attentional spread, thereby enhancing our ability to detect perceptual stimuli to which we would normally be inattentionally blind under less taxing cognitive conditions. We discuss the implications of these findings for our understanding of the relationship between working memory and selective attention.  相似文献   
94.
Choice blindness is the finding that participants both often fail to notice mismatches between their decisions and the outcome of their choice and, in addition, endorse the opposite of their chosen alternative. But do these preference reversals also carry over to future choices and ratings? To investigate this question, we gave participants the task of choosing which of a pair of faces they found most attractive. Unknown to them, we sometimes used a card trick to exchange one face for the other. Both decision theory and common sense strongly suggest that most people would easily notice such a radical change in the outcome of a choice. But that was not the case: no more than a third of the exchanges were detected by the participants. We also included a second round of choices using the same face pairs, and two stages of post‐choice attractiveness ratings of the faces. This way we were able to measure preference strength both as choice consistency and by looking at measures of rating differences between chosen and rejected options. We found that the initially rejected faces were chosen more frequently in the second choice, and the perceived attractiveness of these faces was increased even in uncoupled individual ratings at the end of the experiment. This result is discussed in relation to Chen and Risen's recent criticism of the Free Choice Paradigm, as it shows that choices can affect future preferences. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   
95.
ABSTRACT

The selection of relevant stimuli is partially achieved through inhibition of irrelevant distractors. Using the distractor induced blindness (DIB) paradigm, we investigated whether these inhibitory processes depend on the feature dimension that is used to define distractors. Following a pilot study that found motion and colour targets to be comparably salient, we analysed distractor effects of those two feature dimensions. In both feature dimensions, an inhibition effect depended on the number of distractors. Colour, however, was more sensitive to distractor episodes as compared to motion: The level of inhibition was more pronounced, and its activation required less distractors. The results of a control experiment provided further evidence that, in fact, the feature dimension -instead of design differences between tasks- is responsible for this observation. The dimension-sensitive bias in the activation of a central inhibition system may be attributed to a differential processing of visual signals, depending on their behavioural relevance.  相似文献   
96.
Three experiments examined spatial allocation of attention during active search for visual changes. In all experiments, there were three conditions of change location related to a centre of interest: (1) Central (most attended location itself), (2) near, and (3) far marginal change. In Experiment 1, participants showed the slowest search and the largest number of undetected changes in near condition. Moreover, they misidentified near changes more frequently than central and far ones. In Experiment 2, participants had to search for marginal changes in the presence of a once noticed central change that summoned additional attention to a central location. It resulted in further search slowing for near changes. In Experiment 3, participants searched for one of two concurrent marginal changes in the presence of a central one. They detected far changes about 2.3 times more frequently than near ones. Taken together, these results support the notion of “dead zone of attention” surrounding attentional focus. Several speculations about the nature of dead zone are discussed.  相似文献   
97.
ABSTRACT

Previous research has assessed links between violent video game playing, aggression, and desensitization in the moral domain, but here we find that frequent violent video game play additionally may be linked with differences in perceptual processing. In an emotion-induced blindness task – wherein graphic images typically outcompete and impair perception of targets – violent video game players suffered less perceptual disruption following aversive images than non-players did, despite no group difference following neutral images. This difference persisted when controlling for sex and other violent media consumption and despite no group differences in trait aggression, disgust propensity, or disgust sensitivity. Importantly, the recruitment method ensured that participants were not aware of links between the experiment and their videogame playing history. Although a causal relationship has yet to be established, the findings suggest that violent video game players might sometimes, literally see the world differently.  相似文献   
98.
The impact of object familiarity on change blindness was examined. Familiarity was operationalized by manipulating the orientation (upright vs. inverted) of letters: Upright letters formed familiar stimuli whereas inverted letters produced unfamiliar stimuli. Across four experiments, orientation was shown to affect the ability to detect change. In Experiment 1, the orientation effect was independent of the number of distractors (set size), suggesting that orientation and set size affect separate processes. In Experiment 1b, it was shown that the orientation effect did not depend on the alternation of a particular letter pair. In Experiment 2 an interaction between set size and stimulus quality suggests that set size has its effects early in processing, whereas additivity between stimulus quality and orientation suggests that orientation has an effect on later processing. Experiment 3 replicates and extends the findings from Experiments 1 and 2. A stage model of change blindness is proposed and extended by drawing on constructs from Rensink (2000b, 2002, 2005).  相似文献   
99.
ABSTRACT

Perceptual load theory of attention predicts that the level of perceptual load in a primary task affects the processing of additional stimuli. Given the lack of ecologically valid evidence for the model, the current study assessed the effect of perceptual load on driver awareness during simulated driving tasks. The results showed that perceptual load dramatically affected driver awareness for visual and auditory stimuli, even those that were driving relevant and safety critical (e.g. pedestrians or the sound of a car horn). The results support load theory and suggest that perceptual load may be an important factor in driver safety.  相似文献   
100.
Some contemporary Kantians have argued that one could not be virtuous without having internalized certain patterns of awareness that permit one to identify and respond reliably to moral reasons for action. I agree, but I argue that this insight requires unrecognized, farreaching, and thoroughly welcome changes in the traditional Kantian understanding of maxims and virtues. In particular, it implies that one's characteristic emotions and desires will partly determine one's maxims, and hence the praiseworthiness of one's actions. I try to show this by pointing out an instability in the Kantian understanding of maxims. On the one hand, maxims are thought of as consciously affirmed, subjective principles of action. On the other hand, Kantians claim that nothing counts as an action, nor as morally assessable, unless it has a maxim. One cannot take both thoughts seriously without implausibly constricting the range of behavior that counts as action, hence as morally assessable. This difficulty can be overcome, I suggest, by jettisoning the idea that maxims must be consciously affirmed, and by stressing the way in which maxims are grounded in the pruning and shaping of one's emotions and desires during socialization. This opens the door to a rich Kantian theory of virtue. It also raises questions about the scope and ground of our moral responsibility, which I address at the end of the paper.  相似文献   
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