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61.
Roger Buehler Dale Griffin Kent C.H. Lam Jennifer Deslauriers 《Organizational behavior and human decision processes》2012
People typically underestimate the time necessary to complete their tasks. According to the planning fallacy model of optimistic time predictions, this underestimation occurs because people focus on developing a specific plan for the current task and neglect the implications of past failures to meet similar deadlines. We extend the classic planning fallacy model by proposing that a phenomenal quality of mental imagery – the visual perspective that is adopted – may moderate the optimistic prediction bias. Consistent with this proposal, participants in four studies predicted longer completion times, and thus were less prone to bias, when they imagined an upcoming task from the third-person rather than first-person perspective. Third-person imagery reduced people’s focus on optimistic plans, increased their focus on potential obstacles, and decreased the impact of task-relevant motives on prediction. The findings suggest that third-person imagery helps individuals generate more realistic predictions by reducing cognitive and motivational processes that typically contribute to bias. 相似文献
62.
Pioneer experiments on saccadic suppression have shown that this effect is not followed by motor disorientation: Conscious perception of a target displacement can be dissociated from correct manual target reaching. It has subsequently been demonstrated that movement corrections with the same latency and spatial characteristics can be produced in conditions allowing perceptual awareness of perturbation of a target as in condition inducing saccadic suppression. In addition to the qualitative dissociation between motor performance and conscious awareness, quantitative temporal dissociations in action can be observed by manipulating different features of the visual target. When the target of an ongoing simple action is perturbed, a temporal advantage is found for responses to perturbations of location relative to colour and shape. Furthermore, there seems to be a temporal advantage for automatic motor corrections made in response to a target displacement as compared to other responses (other ongoing movement adjustments, movement interruption, conditional motor response such as pressing a key, verbal response, delayed matching-to-sample tasks). Thus, this paper reviews evidence for the fact that the temporal characteristics of any given response to a stimulus are dependent both on the sensory processes and on the type of response generated. Accordingly, identification responses (such as verbal report) to a visual stimulus are much slower than motor corrections of an ongoing movement in response to a target location change because of different processing times of the stimulus features (“What” compared to “Where”) and of the response itself (“What” compared to “How”). The existence of two continua (What/Where and What/How) is proposed between these two extreme stimulus- response combinations. This model may be a useful framework to better understand visuo-motor transformations and the network of connections between visual and motor areas. 相似文献
63.
Nathaniel J. Blanco W. Todd Maddox Francisco Gonzalez‐Lima 《Journal of Neuropsychology》2017,11(1):14-25
Transcranial infrared laser stimulation is a new non‐invasive form of low‐level light therapy that may have a wide range of neuropsychological applications. It entails using low‐power and high‐energy‐density infrared light from lasers to increase metabolic energy. Preclinical work showed that this intervention can increase cortical metabolic energy, thereby improving frontal cortex‐based memory function in rats. Barrett and Gonzalez‐Lima (2013, Neuroscience, 230, 13) discovered that transcranial laser stimulation can enhance sustained attention and short‐term memory in humans. We extend this line of work to executive function. Specifically, we ask whether transcranial laser stimulation enhances performance in the Wisconsin Card Sorting Task that is considered the gold standard of executive function and is compromised in normal ageing and a number of neuropsychological disorders. We used a laser of a specific wavelength (1,064 nm) that photostimulates cytochrome oxidase – the enzyme catalysing oxygen consumption for metabolic energy production. Increased cytochrome oxidase activity is considered the primary mechanism of action of this intervention. Participants who received laser treatment made fewer errors and showed improved set‐shifting ability relative to placebo controls. These results suggest that transcranial laser stimulation improves executive function and may have exciting potential for treating or preventing deficits resulting from neuropsychological disorders or normal ageing. 相似文献
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65.
Chaves (2010) argues that much of the work in the sociology of religion is susceptible to the religious congruence fallacy—the tendency to assume consistency between religious beliefs and one's attitudes and behaviors across situations when they are in fact highly variable. We build on and extend this argument by focusing on intersecting group identities as a mechanism for identifying such incongruence, not only within religious contexts, but also at the intersection of categories such as gender and race. To illustrate this argument, the analysis draws on data from the 2006 Panel Study of American Religion and Ethnicity (PS‐ARE) to assess how race, gender, and religion interact to produce different levels of attitude and behavior incongruencies on key issues of the day, specifically conservative social values and voting behaviors. The results find marked differences and inconsistent relationships between attitudes and behaviors across racial‐gender groups. We use the analysis to highlight the conditions that result in incongruence at the intersections of identity categories and pinpoint where social scientists are most vulnerable to committing the congruence fallacy. 相似文献
66.
William James in his Principles of Psychology (1890, pp. 194–197) warned psychologists against their own habits of assuming that other human beings are like they are. He outlined “three snares” which he considered as obstacles for psychology becoming a science: 1. The misleading influence of language, 2. The confusion of one’s own standpoint with that of mental fact, and 3. The assumption of conscious reflection in the participant as that is the case for the researcher. His challenges remain valid to the discipline also in our 21st century, yet an unsolved problem remains: development of formal theoretical systems that generalize from the “pure experience” of living in irreversible time to basic principles of meaning-making. By pointing to the three snares 125 years ago, William James himself created a new one—that of pragmatism. 相似文献
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68.
Staddon JE MacPhail RC Padilla S 《Journal of the experimental analysis of behavior》2010,94(2):261-266
Charles Sherrington identified the properties of the synapse by purely behavioral means—the study of reflexes—more than 100 years ago. They were subsequently confirmed neurophysiologically. Studying reflex interaction, he also showed that activating one reflex often facilitates another, antagonistic one: successive induction, which has since been demonstrated in a wide range of species, from aphids to locusts to dogs and humans. We show a particularly orderly example in zebrafish (Danio rerio) larvae; the behavior (locomotion) of larvae is low in dark and intermediate in light, but low in light and substantially higher in dark when dark followed light. A quantitative model of a simple dynamic process is described that readily captures the behavior pattern and the effects of a number of manipulations of lighting conditions. 相似文献
69.
People tend to underestimate the time it takes to accomplish tasks. This bias known as the planning fallacy derives from the tendency to focus attention too narrowly on the envisaged goal and to ignore additional information that could make predictions more accurate and less biased. Drawing on recent research showing that power induces attentional focus, four studies tested the hypothesis that power strengthens the tendency to underestimate future task completion time. Across a range of task domains, and using multiple operationalizations of power, including actual control over outcomes (Study 1), priming (Studies 2 and 3), and individual differences (Study 4), power consistently led to more optimistic and less accurate time predictions. Support was found for the role of attentional focus as an underlying mechanism for those effects. Differences in optimism, self-efficacy, and mood did not contribute to the greater bias in powerful individuals’ forecasts. We discuss the implications of these findings for institutional decision processes and occupational health. 相似文献
70.
Johanna Peetz Roger Buehler Anne Wilson 《Journal of experimental social psychology》2010,46(5):709-720
In everyday life people estimate completion times for projects in the near and distant future. How might the temporal proximity of a project influence prediction? Given that closer events elicit more concrete construals, we proposed that temporal proximity could enhance two kinds of concrete cognitions pertinent to task completion predictions: step-by-step plans and potential obstacles. Although these cognitions have opposite implications for prediction, and thus could cancel each other out, we hypothesized that temporal proximity would have a greater impact on cognitions that were relatively focal. Thus contextual factors that alter the relative focus on plans vs. obstacles should determine whether and how temporal proximity affects prediction. Six studies supported this reasoning. In contexts that elicited a focus on planning, individuals predicted earlier completion times for close than distant projects. In contexts that prompted a focus on obstacles, individuals predicted later completion times for close than distant projects. 相似文献