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81.
Visual object perception is usually studied by presenting one object at a time at the fovea. However, the world around us is composed of multiple objects. The way our visual system deals with this complexity has remained controversial in the literature. Some models claim that the ventral pathway, a set of visual cortical areas responsible for object recognition, can process only one or very few objects at a time without ambiguity. Other models argue in favor of a massively parallel processing of objects in a scene. Recent experiments in monkeys have provided important data about this issue. The ventral pathway seems to be able to perform complex analyses on several objects simultaneously, but only during a short time period. Subsequently only one or very few objects are explicitly selected and consciously perceived. Here, we survey the implications of these new findings for our understanding of object processing. 相似文献
82.
By taking the MAX from their inputs, neurons in the ventral visual pathway might preserve their selectivity even when stimulated with natural scenes. This computational hypothesis has received recent direct physiological evidence from recordings of V4 neuronal responses, in a recent study by Gawne and Martin (2002). Object vision might rely more heavily on parallel processing than generally thought. 相似文献
83.
François Maquestiaux André Didierjean Eric Ruthruff Guillaume Chauvel Alan Hartley 《Psychonomic bulletin & review》2013,20(6):1206-1212
Can elderly adults automatize a new task? To address this question, 10 older adults each performed 10,080 training trials over 12 sessions on an easy but novel task. The psychological refractory period (PRP) procedure was then used to evaluate whether this highly practiced task, when presented as task 2 along with an unpracticed task 1, could proceed automatically. If automatic, task 2 processing should bypass the bottleneck and, therefore, not be delayed while central attention is devoted to task 1, yielding little dual-task interference. This is exactly what Maquestiaux, Laguë-Beauvais, Ruthruff, and Bherer (Memory and Cognition 36:1262-1282, 2008) previously observed for almost all younger adults, even with half the training on a more difficult task. Although extensive training reduced older adults’ reaction times to only 307 ms, a value virtually identical to that attained by Maquestiaux et al.’s (Memory and Cognition 36:1262-1282, 2008) younger adults, the highly practiced task 2 was slowed by 485 ms in the dual-task PRP procedure. Such a large slowing in older adults is striking given the easy tasks and massive amounts of practice. These findings demonstrate a qualitative change with age, in which older adults lose the ability to automatize novel tasks, which cannot be attributed merely to generalized cognitive slowing. 相似文献
84.
85.
Marcel Guillaume 《Synthese》1966,16(1):27-33
Sans résumé 相似文献
86.
87.
Measuring Competence and Dysfunction in Preschool Children: Source Agreement and Component Structure
Daniel Klyce Anthony J. Conger Judith Cohen Conger Jean E. Dumas 《Journal of child and family studies》2011,20(4):503-510
Agreement between parents and teachers on ratings of three domains of behaviors exhibited by preschool children and the structural
relations between these domains were measured. Parents and teachers rated the behaviors of a socioeconomically diverse sample
of 610 children; ratings were obtained from parents at three time points and from teachers at two time points. The results
indicated little agreement between sources on the ratings of individual child behaviors; however, ratings within a source
were stable over time. Principal components analyses of source ratings combined and separately indicated virtually identical
and independent three-component solutions comprised of a coping competence, externalizing behavior, and internalizing behavior
component. These data suggest that competence and dysfunction develop in response to different contextual demands and underscore
the importance of measuring each domain of behavior in clinical and research settings. 相似文献
88.
Guillaume R. Coudevylle Christophe Gernigon Kathleen A. Martin Ginis 《Psychology of sport and exercise》2011,12(6):670-675
Objectives
The purpose of the present study was to examine the mediational role of self-confidence and anxiety in the relationship between self-esteem and claimed self-handicapping in an achievement context.Design
To test this mediational role, the three-step procedure advocated by Baron and Kenny (1986) was used.Method
After hearing and reading about specific conditions of performing that were intended to favor invoking excuses for future poor performance, 68 competitive basketball players completed measures of self-esteem, anxiety (cognitive and somatic), self-confidence, and claimed self-handicapping. Then, they warmed-up and carried out a basketball task.Results
Self-esteem negatively predicted cognitive anxiety and positively predicted self-confidence. In turn, self-confidence negatively predicted claimed self-handicapping and mediated the relationship between self-esteem and claimed self-handicapping. Cognitive and somatic anxieties did not mediate the relationship between self-esteem and claimed self-handicapping. Together, these results suggest that individuals with low self-esteem use more claimed self-handicaps because they have lower self-confidence.Conclusion
These findings shed light on the psychological processes that lead people with low self-esteem to use strategies of claimed self-handicaps. 相似文献89.
Guillaume Durand 《Journal of personality assessment》2019,101(2):140-149
Although the term psychopathy is embedded with negativity, evidence points to the existence of another form of psychopathy, which involves adaptive traits such as stress and anxiety immunity, remarkable social skills, noteworthy leadership ability, and an absence of fear. The newly developed Durand Adaptive Psychopathic Traits Questionnaire (DAPTQ) aims to assess adaptive traits known to correlate with the psychopathic personality. Validation of the questionnaire among 765 individuals from the community gave support to a 9-factor solution: Leadership, Logical Thinking, Composure, Creativity, Fearlessness, Money Smart, Focus, Extroversion, and Management. The DAPTQ and its 9 subscales demonstrated good internal consistency reliability in a community sample (.68–.88). Convergent validity and divergent validity were supported by administering the DAPTQ alongside established measures of the psychopathic personality. Overall, these findings support the potential of the DAPTQ as an instrument for measuring psychopathy-associated adaptive traits. Limitations of this study and potential directions for future research are also discussed. Further studies are needed to validate the DAPTQ and its subscales against a wider range of personality traits and behaviors. 相似文献
90.
Presents a study in which three sets of photographs of socially competent, aggressive, and anxious preschoolers were rated by college students (n = 150 raters per set), blind to the children's group membership. This was done to assess the extent to which adults are able to make valid and reliable evaluations of children's psychological adjustment on the basis of physical appearance alone. Sets 1 and 2 were photographs of different children taken under the same conditions and providing both facial and nonfacial cues. Sets 2 and 3 were of the same children taken under conditions that varied as to the amount of nonfacial cues they provided. Results showed that (a) socially competent children were judged to be better adjusted than their dysfunctional peers (i.e., more competent, less aggressive, less anxious, and less likely to have emotional or behavioral problems); (b) within the dysfunctional group, aggressive and anxious children were distinguished in ways that correspond closely to what is known about them from behavioral and clinical research; (c) irrespective of group membership, girls and boys were generally distinguished in ways that reflect normative beliefs about gender differences from social and developmental research; (d) group differences in ratings of psychological adjustment were generally comparable across photograph sets and could not be accounted for by differences in the children's perceived physical attractiveness; and (e) raters reported that they relied mainly on the children's expression, eyes, and posture to make their judgments of adjustment. These results replicate and extend earlier findings based on 1 of the 3 photograph sets (Serketich & Dumas, 1997). They suggest that when first impressions matter, competent children are at an advantage and their dysfunctional peers at a disadvantage even before their actual behavior comes to confirm or to invalidate these impressions. Theoretical and clinical implications of the findings are discussed. 相似文献