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Summary The perceptual outcome and the motion-aftereffect duration generated by the rotation on the frontal plane of an ellipse with a bar depend on whether the bar is placed along the major or the minor axis. When the bar is placed along the minor axis, a stereokinetic transformation occurs, and the pattern looks like a tilting ring with a perpendicular bar moving rigidly with it. Placing the bar along the major axis prevents the stereokinetic transformation: subjects report deformations and relative motion of the bar with respect to the ellipse. We found that motion aftereffects last longer when the bar is placed along the minor rather than along the major axis. A series of experiments was carried out to investigate whether differences in aftereffect duration are related to the stereokinetic transformation. Results seem to suggest that they are not.The authors' names are in alphabetical order. 相似文献
3.
Psychometric properties of the Personality Assessment Inventory (PAI; Morey 1991) within an eating disordered sample seeking treatment (N = 238) and differences among eating disorder diagnostic groups on the PAI were examined. The PAI showed acceptable alpha coefficients, item-total correlations, and interitem correlations. The factor structure was similar to that reported by Morey (1991), with the addition of another factor related to interpersonal coolness and distance. Those with binge eating disorder (BED) reported fewer problems and less distress in general compared to other eating disordered groups. The BED and bulimia nervosa groups were different from the anorexia nervosa groups in frequency of matching on two PAI clusters. Use of the PAI with an eating disordered population and its utility in understanding eating disorder diagnostic groups is supported. 相似文献
4.
Burnout can be defined as a long-term reaction to occupational stress which involves, particularly, the helping professions. The main aim of this study was the assessment of burnout in a sample of professional and voluntary health care workers and comparison of the two samples on scores from the Maslach Burnout Inventory. Analysis suggests a significant difference in mean scores for Emotional Exhaustion of volunteers vs professional workers. Some evidence has supported the hypothesis of a fourth dimension, called Behavioral Exhaustion, in the burnout syndrome. 相似文献
5.
Domestic chicks are capable of perceiving as a whole objects partly concealed by occluders (amodal completion). In previous studies chicks were imprinted on a certain configuration and at test they were required to choose between two alternative versions of it. Using the same paradigm we now investigated the presence of hemispheric differences in amodal completion by testing newborn chicks with one eye temporarily patched. Separate groups of newly hatched chicks were imprinted binocularly: (1) on a square partly occluded by a superimposed bar, (2) on a whole or (3) on an amputated version of the square. At test, in monocular conditions, each chick was presented with a free choice between a complete and an amputated square. In the crucial condition 1, chicks tested with only their left eye in use chose the complete square (like binocular chicks would do); right-eyed chicks, in contrast, tended to choose the amputated square. Similar results were obtained in another group of chicks imprinted binocularly onto a cross (either occluded or amputated in its central part) and required to choose between a complete or an amputated cross. Left-eyed and binocular chicks chose the complete cross, whereas right-eyed chicks did not choose the amputated cross significantly more often. These findings suggest that neural structures fed by the left eye (mainly located in the right hemisphere) are, in the chick, more inclined to a global analysis of visual scenes, whereas those fed by the right eye seem to be more inclined to a featural analysis of visual scenes. 相似文献
6.
Sovrano VA Bisazza A Vallortigara G 《Journal of experimental psychology. Animal behavior processes》2003,29(3):199-210
When disoriented in a closed rectangular tank, fish (Xenotoca eiseni) reoriented in accord with the large-scale shape of the environment, but they were also able to conjoin geometric information with nongeometric properties such as the color of a wall or the features provided by panels located at the corners of the tank. Fish encoded geometric information even when featural information sufficed to solve the spatial task. When tested after transformations that altered the original arrangement of the panels, fish were more affected by those transformations that modified the geometric relationship between the target and the shape of the environment. Finally, fish appeared unable to use nongeometric information provided by distant panels. These findings show that a reorientation mechanism based on geometry is widespread among vertebrates, though the joint use of geometric and nongeometric cues by fish suggest that the degree of information encapsulation of the mechanism varies considerably between species. 相似文献
7.
In this article we describe a child affected by right parieto-occipital lesion due to head injury. The patient showed left hemianopia, but not unilateral spatial neglect on traditional paper-and-pencil tests and on "ecological" tests. However, his parents reported frequent collisions with obstacles on the left side. A specific test was set up: The patient had to kick down skittles put on both sides of a route traced on the floor. He kicked down 89% of skittles on the right, but only 38% on the left side. These findings are discussed in light of recent theories on unilateral neglect. 相似文献
8.
G Grossi 《Scandinavian journal of psychology》1999,40(3):157-165
The study investigated the associations between coping and symptoms of emotional distress within a sample of 166 unemployed men and women (mean age 40 +/- 10 years, range 22 to 63 years, 52% males). All variables were measured with a questionnaire comprising sociodemographic background, length of unemployment, financial strain, coping style ("Ways of Coping Checklist"), and emotional distress (Hopkins Symptom Check List-25). Emotional distress was positively related to financial strain and more common among younger subjects, divorced subjects and those with foreign background, but less frequent among subjects who had been unemployed for more than three years. After controlling for age, gender, education, foreign background, length of unemployment and financial strain, hierarchical regression analyses showed that emotion-focused coping, i.e. self-blame and wishful thinking, was positively related to emotional distress. Problem-focused coping and cognitive restructuring were negatively associated with emotional distress. Younger subjects and divorced subjects made frequent use of both emotion-focused and problem-focused coping. Female subject and subjects with mandatory school made frequent use of emotion focused coping, if exposed to high financial strain. Problem-focused coping was less frequent among subjects with a low education coupled with low financial strain. Cognitive restructuring was less common among subjects who had been unemployed for more than three years. Younger subjects who were also divorced made less use of both problem-focused coping and cognitive restructuring. The results confirm that coping style has importance for the mental health of the unemployed, and indicate a differential use of coping strategies among subjects with different sociodemographic backgrounds and different levels of financial strain. 相似文献
9.
Reading and writing Noun-Noun compound nouns was investigated in two Italian aphasic patients: one with phonological dyslexia and the other with phonological dysgraphia. The patients were required to read, write and repeat a list of Noun-Noun compounds and length-matched non-compound nouns. The dyslexic patient RF read compounds better than non-compounds, and his repetition was flawless for both categories. The dysgraphic patient DA wrote non-compounds better than compounds because of a deficit in keeping separate entries at the lemma level. Differential performance when processing compounds and non-compounds is the result of a deficit in different components within the mental lexicon architecture. 相似文献
10.
Gillian S. Forrester Caterina Quaresmini David A. Leavens Caterina Spiezio Giorgio Vallortigara 《Animal cognition》2012,15(6):1121-1127
We employed a bottom-up, quantitative method to investigate great ape handedness. Our previous investigation of gorillas (Gorilla gorilla gorilla) demonstrated that contextual information influenced an individual’s handedness toward target objects. Specifically, we found a significant right-hand bias for unimanual actions directed toward inanimate target objects but not for actions directed to animate target objects (Forrester et al. in Anim Cogn 14(6):903–907, 2011). Using the identical methodological technique, we investigated the spontaneous hand actions of nine captive chimpanzees (Pan troglodytes) during naturalistic, spontaneous behavior. We assessed both the frequencies and proportions of lateralized hand actions directed toward animate and inanimate targets employing focal follow video sampling. Like the gorillas, the chimpanzees demonstrated a right-handed bias for actions directed toward inanimate targets, but not toward animate targets. This pattern was evident at the group level and for the majority of subjects at the individual level. We postulate that a right-hand bias for only inanimate targets reflects the left hemisphere’s dominant neural processing capabilities for objects that have functional properties (inanimate objects). We further speculate that a population-level right-hand bias is not a human-unique characteristic, but one that was inherited from a common human-ape ancestor. 相似文献