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291.
292.
Yvonne Duagani Masika Christophe Leys Pierre Fossion Paul Verbanck Maurice Tingu Yaba Nzolameso Samuel Mampunza Ma Miezi 《Journal of Psychology in Africa》2019,29(3):249-254
This study examined influences of trauma awareness and preparedness on the development of posttraumatic stress disorder (PTSD) in civilian and military personnel with exposure to the civil war. Participants were 302 people with exposure to civil war in the Democratic Republic of Congo (civilians = 68%; females = 47%; age range = 16 to 76 years old, SD = 13.58 years). Participants completed the Posttraumatic Checklist Scale, General Self-Efficacy Scale, and Traumatic Events List. The data were analysed to predict PTSD development from trauma awareness and preparedness, taking exposure to multiple traumas into account as a risk factor. Findings suggest that trauma awareness and preparedness play an important role among military personnel in moderating the risk of developing PTSD, more so than among the civilian population. Mental health professionals working with civil war survivors should seek to explore trauma awareness and preparedness as resources for minimising risk for PTSD in armed conflict situations. 相似文献
293.
Lise Fillion Adrienne H. Kovacs Pierre Gagnon Norman S. Endler 《Current psychology (New Brunswick, N.J.)》2002,21(1):17-34
To study the relationship between cancer and emotional adjustment, investigation of situation-specific coping behaviors with
respect to narrowly defined Stressors has recently been promoted. The development and validation of shorter instruments, designed
to facilitate completion by clinical populations, has also been recommended. The current study examined the coping skills
used by French-Canadian women undergoing radiation therapy for breast cancer. A factor analysis of the 28-item shortened COPE
(Carver, Scheier, & Weintraub, 1989) yielded the following eight factors: disengagement, self-distraction, active coping,
using emotional support from husband/ partner, using emotional support from friends, turning to religion, humor, and substance
use. The test-retest and Cronbach alpha internal consistency reliability coefficients of the French-Canadian shortened COPE
were actually higher than those observed in the full-length version of the instrument. In addition, the eight factor-based
scores correlated in a theoretically meaningful manner with existing measures of coping skills with illness (Coping with Health
Injuries and Problems; CHIP) and mood disturbance (Profile of Mood States; POMS), thus suggesting good construct convergent
and concurrent criterion validity. In particular, the disengagement COPE scale was correlated highly with anxiety, depression,
and anger. While further validation is recommended, the results show promise for the shortened COPE in assessing coping in
women with breast cancer, and also provide continued evidence for the notion that specific coping skills are associated with
particular mood states. 相似文献
294.
The goal of the present experiment was to determine if object size rescaling in the shape-matching task requires central resources. Two polygons were presented side by side as the second task in a psychological refractory period paradigm. The polygons could be the same as each other or mirror images of each other and the size ratio between the two polygons was varied. In the first task, subjects were required to make a speeded response to the pitch of a tone. The polygon task followed at varying SOAs and the subjects then made a speeded same/mirror image judgement on the polygons. The size ratio effect was additive with SOA indicating that size rescaling is capacity demanding and that it requires central attention. 相似文献
295.
Fractionating the preview benefit in search: dual-task decomposition of visual marking by timing and modality 总被引:3,自引:0,他引:3
Humphreys GW Watson DG Jolicoeur P 《Journal of experimental psychology. Human perception and performance》2002,28(3):640-660
Providing participants with a preview of half the distractors in a visual search task facilitates performance. The present study examined the effects of secondary tasks on the preview benefit in search. Participants had to attend to a visual or an auditory stream of digits that began either (a) at the onset of the preview or (b) after the preview. Secondary tasks that onset with the preview disrupted the preview benefit irrespective of their modality. Only visual secondary tasks disrupted the benefit in the delayed condition. These selective interference effects suggest that the preview benefit can be fractionated into 2 components: an initialization component that involves modality-independent resources and a maintenance component that depends on visual resources. Results are discussed in relation to theoretical accounts of the preview benefit in search. 相似文献
296.
297.
Pierre Dillenbourg 《Kognitionswissenschaft》2000,9(1):50-53
Zusammenfassung. In den Jahren 1994 bis 1997 fand eine Reihe von Workshops zum Thema "Collaborative Learning" unter Beteiligung von Psychologen, Erziehungswissenschaftlern und Informatikern statt. In diesen Begegnungen zeigten sich einige Unterschiede im Verständnis des Begriffes "Collaborative Learning" zwischen Psychologie und Verteilter Künstlicher Intelligenz. Der wesentliche Unterschied betrifft die Mechanismen mittels derer kooperierende Agenten Mißverständnisse erkennen und ausräumen, um somit zu einem gemeinsamen Verständnis der Aufgabe und ihrer Lösung zu gelangen. Diese Mechanismen könnten ein vorrangiger Forschungsgegenstand werden, wenn es darum geht, die Unterschiede zwischen den Disziplinen zu überbrücken. Summary. During the years 1994 to 1997, 20 European scholars from psychology, educational science and computer science participated in a series of workshops on collaborative learning. This experience revealed various differences in the way collaborative learning is understood in psychology and in distributed artificial intelligence. The main difference concerns the mechanisms by which agents detect and repair misunderstandings in order to progressively build a shared understanding of the task at hand and its solution. These mechanisms could become a priority item on the research agenda that bridges the disciplines. 相似文献
298.
Spatial variations of visual-auditory fusion areas 总被引:2,自引:0,他引:2
The tolerance to spatial disparity between two synchronous visual and auditory components of a bimodal stimulus has been investigated in order to assess their respective contributions to perceptual fusion. The visual and auditory systems each have specific information-processing mechanisms, and provide different cues for scene perception, with the respective dominance of space for vision and of time for hearing. A broadband noise burst and a spot of light, 500 ms in duration, have been simultaneously presented to participants who had to judge whether these cues referred to a single spatial event. We examined the influence of (i) the range and the direction of spatial disparity between the visual and auditory components of a stimulation and (ii) the eccentricity of the bimodal stimulus in the observer's perceptual field. Size and shape properties of visual-auditory fusion areas have been determined in two dimensions. The greater the eccentricity within the perceptual field, the greater the dimension of these areas; however, this increase in size also depends on whether the direction of the disparity is vertical or horizontal. Furthermore, the relative location of visual and auditory signals significantly modifies the perception of unity in the vertical plane. The shape of the fusion areas, their variation in the field, and the perceptual result associated with the relative location of the visual and auditory components of the stimulus, concur towards a strong contribution of audition to visual-auditory fusion. The spatial ambiguity of the localisation capabilities of the auditory system may play a more essential role than accurate visual resolution in determining fusion. 相似文献
299.
Pierre Baldi 《Journal of mathematical psychology》2003,47(4):467-470
When there are order constraints among the parameters of a binary, multinomial processing tree (MPT) model, methods have been developed for reparameterizing the constrained MPT into an equivalent unconstrained MPT. This note provides a theorem that is useful in computing bounds on the estimator variances for the parameters of the constrained model in terms of estimator variances of the parameters of the unconstrained model. In particular, we show that if X and Y are random variables taking values in [0,1], then Var[XY]?2(Var[X]+Var[Y]). 相似文献
300.
Targets are identified more accurately when they are presented during an incongruent response (e.g., a left-pointing arrowhead presented during a right key press) than during a congruent response (e.g., a left-pointing arrowhead presented during a left key press). This effect, referred to here as congruency-induced blindness, has been hypothesised to result from the occupation of feature codes. According to the code occupation hypothesis (Behav. Brain Sci.; J. Experim. Psychol.: Human Percept. Perform.; Vis. Cogn., in press), only costs of congruency between features of a planned or executed action and a to-be-perceived target should be observed; neither costs nor benefits of incongruency are predicted by this account. In the present study, we investigated costs and benefits in identifying left and right targets directly by manipulating neutral response type and the symbols used to cue the neutral response, which produced four neutral conditions. Three important results emerged: (1). a significant main effect of RSI (suggesting that increasing temporal overlap between a planned action and target presentation interferes with perceptual reports of the target), (2). a significant main effect of congruency (showing that impairment is code-specific), and (3). clear-cut costs with little evidence for benefits. Other complex patterns of results provided additional information relevant for extant theories of perception-action interactions. 相似文献