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31.
Aviezer Tucker 《Inquiry (Oslo, Norway)》2013,56(4):501-521
Philosophers have often noted that science displays an uncommon degree of consensus on beliefs among its practitioners. Yet consensus in the sciences is not a goal in itself. I consider cases of consensus on beliefs as concrete events. Consensus on beliefs is neither a sufficient nor a necessary condition for presuming that these beliefs constitute knowledge. A concrete consensus on a set of beliefs by a group of people at a given historical period may be explained by different factors according to various hypotheses. A particularly interesting hypothesis from an epistemic perspective is the knowledge hypothesis: shared knowledge explains a consensus on beliefs. If all the alternative hypotheses to the knowledge hypotheses are false or are not as good in explaining a concrete consensus on beliefs, the knowledge hypothesis is the best explanation of the consensus. If the knowledge hypothesis is best, a consensus becomes a plausible, though fallible, indicator of knowledge. I argue that if a consensus on beliefs is uncoerced, uniquely heterogeneous and large, the gap between the likelihood of the consensus given the knowledge hypothesis and its likelihoods given competing hypotheses tends to increase significantly. Consensus is a better indicator of knowledge than “success” or “human flourishing”. 相似文献
32.
Murray G. Tucker Justin J. Kavanagh Steven Morrison Rod S. Barrett 《Journal of motor behavior》2013,45(5):277-287
The authors examined differences between young adults (n = 25) and healthy older adults (n = 48) in reaction time and the relations between center of pressure (COP) and center of mass (COM) motions during rapid initiation and termination of voluntary postural sway. Older adults were divided into low and high falls-risk groups based on Physiological Profile Assessment scores of sensorimotor function. Low falls-risk older adults had slower reaction times during anteroposterior sway initiation and decreased COP–COM separation during anteroposterior and medialateral sway initiation and anteroposterior continuous voluntary sway compared with young adults. High falls-risk older adults had slower initiation and termination reaction times in all response directions and decreased COP–COM separation during sway initiation and continuous voluntary sway in the anteroposterior and medialateral directions compared with young adults. Compared with low falls-risk older adults, high falls-risk older adults had slower initiation and termination reaction times in all response directions and decreased COP–COM separation during medialateral continuous voluntary sway. Reaction time and COP–COM measures significantly predicted group status in discriminant models with sensitivities and specificities of 72–100%. Overall, these findings highlight important associations of age-related declines in sensorimotor function related to an increased risk of falling with slower postural reaction time and reduced postural stability. 相似文献
33.
Researchers posit that adaptability is an important contributor of performance and that it mediates the effects of distal predictors on performance. As limited empirical evidence supports these relationships, the present research examined whether adaptive skill mediated the effects of values on performance for military leaders. We found that adaptive skill was a distinct construct which uniquely contributed to overall performance. Further, we found that adaptive skill fully mediated the effects of values on technical-administrative behaviors and partially mediated the effects of values on contextual performance and leader behaviors. We discuss the need to further test the nomological network of KSAO–adaptability–performance relationships. 相似文献
34.
The goals of this study were: (1) to describe and compare parental responses to school-aged siblings’ conflicts; (2) to explore the sibling relationship structural correlates of the parental responses; and (3) to assess the links between type of parental response and sibling relationship quality and children’s psychosocial and physical well being. One parent from eighty-two families (mothers = 68; fathers = 13; 1 missing) of firstborn (Mage = 9.84 years old) and secondborn (Mage = 7.16 years old) children completed an anonymous survey. Parents employed a child-centered strategy most often and sanctioned sibling aggression least often in response to siblings’ conflicts. Closer age spacing among siblings was related to parents’ sanction of physical aggression. Parental response type was associated with sibling relationship quality and children’s psychosocial and physical well being. The differential associations between parental response type, sibling experiences and children’s mental and physical well being are discussed. 相似文献
35.
The close integration between visual and motor processes suggests that some visuomotor transformations may proceed automatically and to an extent that permits observable effects on subsequent actions. A series of experiments investigated the effects of visual objects on motor responses during a categorisation task. In Experiment 1 participants responded according to an object's natural or manufactured category. The responses consisted in uni-manual precision or power grasps that could be compatible or incompatible with the viewed object. The data indicate that object grasp compatibility significantly affected participant response times and that this did not depend upon the object being viewed within the reaching space. The time course of this effect was investigated in Experiments 2–4b by using a go-nogo paradigm with responses cued by tones and go-nogo trials cued by object category. The compatibility effect was not present under advance response cueing and rapidly diminished following object extinction. A final experiment established that the compatibility effect did not depend on a within-hand response choice, but was at least as great with bi-manual responses where a full power grasp could be used. Distributional analyses suggest that the effect is not subject to rapid decay but increases linearly with RT whilst the object remains visible. The data are consistent with the view that components of the actions an object affords are integral to its representation. 相似文献
36.
Richard T. Lapan Bradley Tucker Se‐Kang Kim John F. Kosciulek 《Journal of counseling and development : JCD》2003,81(3):329-342
In this study, the authors evaluated the impact of 4 career development curricular strategies and emotional/instrumental support in preparing rural adolescents to make successful post‐high school transitions. Curriculum strategies and perceived support helped 8th‐, 10th‐, and 12th‐grade students attain critical aspects of career development, enhanced student satisfaction that their education was better preparing them to achieve future educational and career goals, and increased student intentions to enter post‐high school settings that required greater levels of education and training. Girls reported earning higher grades and participating in more work‐based learning activities and intended to enter post–high school training settings that required more education than did boys. 相似文献
37.
Sex differences in predictors of smoking cessation were investigated among 337 male and 490 female participants in the RAND adolescent panel study. Participants reported smoking at least 11-20 times during the past year at Grade 10, with cessation defined as not smoking during the past year at Grade 12. Controlling for demographics, sex-specific analyses indicated that girls who quit smoking within 2 years had friends who smoked less frequently, perceived less parental approval of their smoking, had weaker intentions to continue smoking, used marijuana less frequently, attended fewer different schools, were more likely to have an intact nuclear family, experienced greater peer support, and rated themselves as healthier. Similar analyses for boys yielded results that were generally weaker and nonsignificant, with smoking quantity accounting for several associations in the sex-specific models. Despite these differences, interaction tests revealed significant sex differences for only three predictors. Implications of these results for understanding adolescent smoking cessation are discussed. 相似文献
38.
39.
Both anecdotal and empirical evidence suggest that characteristically happy and unhappy individuals seem to differ in the ways in which they respond to life events and daily situations. This paper reports two questionnaire studies and a laboratory study testing the hypothesis that happy people perceive, interpret, and think about the same events in more positive ways than do unhappy ones. The results of Study 1 showed that students nominated by their peers as very happy reported experiencing similar types of both positive and negative life events, as did peer-nominated unhappy students. However, self-rated happy students tended to think about both types of events more favorably and adaptively—e.g., by seeing humor in adversity and emphasizing recent improvement in their lives. This pattern of results was conceptually replicated in Study 2 using hypothetical events. In Study 3, self-rated happy students interacted with a female confederate in the laboratory, then watched a series of videotapes depicting a fellow (but unfamiliar) student in three different situations. Happy individuals liked the person they met, and recalled her in more favorable terms, more than did unhappy ones. The same pattern of results, albeit weaker, was found for liking of the videotaped target. Implications of our findings for the question of how happiness (or unhappiness) is maintained are discussed. 相似文献
40.
Shifts of visual attention can be studied in adults and infants by cueing responses to a particular spatial location. Earlier studies have shown that by seven months of age normal infants show a similar pattern of facilitation and inhibition to a cued spatial location as adults. In this study we report data from infants with perinatal lesions that include or exclude the left anterior quadrant. Results indicate that infants with left anterior lesions do not show facilitation to a cued spatial location in this task. In contrast, infants with posterior lesions showed the same pattern of performance as healthy subjects. While these findings differ from those obtained with adults, they are consistent with previous studies of children with perinatal lesions, and with findings from ERP studies with normal infants. 相似文献