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1.
A I Cogan 《Perception》1992,21(2):167-176
In a previous study it has been found by using the Crawford masking paradigm with spatially coextensive stimuli that the end points of even a weak flash have a strong masking effect on the probe pulse, but no threshold elevation was observed when the probe was 100 ms or longer from flash onset and offset. The relationship between the strength of a temporal edge (eg the amplitude of a sudden increase in field luminance) and the duration of masking has not been systematically investigated. In the present experiments the duration of masking produced by a step of luminance as a function of step size was measured. With steps whose amplitude was between ten and five hundred times detection threshold, the duration of masking was about constant, ie 70 and 50 ms for on-responses and off-responses, respectively. This refractory period defined the 'width' of a temporal edge. Unless two suprathreshold unidirectional luminance changes are separated by an interval exceeding the width of a temporal edge, they are perceived as a single change in brightness. A linear systems analysis led to predictions for ramp stimuli that were confirmed by experiment.  相似文献   

2.
The author discusses D. W. Winnicott's 1964 review of C. G. Jung's autobiography, Memories, Dreams, Reflections, emphasizing the psychological effect the reviewing process had on Winnicott himself. Writing the review constellated Winnicott's unconscious, and he reported having a healing dream 'for Jung and for some of my patients, as well as for myself'. Winnicott's 'countertransference' to Jung helped him personally, and the review was Winnicott's first written formulation of his theory on 'The use of an object'.  相似文献   

3.
To investigate human visual identification of different-sized objects as identically shaped, matching reaction times were measured for pairs of simultaneously presented random figures. In three experiments, reaction time for correct reactions to test pairs of figures of the same shape and orientation consistently increased approximately linearly as a function of the linear size ratio of the figures. In the second experiment, where this ratio was defined for control pairs as well as for test pairs, reaction time for correct reactions to control pairs showed a similar increase as a function of size ratio. The results suggest that the task was performed by a gradual process of mental size transformation of one of the members of each pair of figures to the format of the other one.  相似文献   

4.
To overcome certain disadvantages of the tilted-mirror situation as a technique for separating visual and postural determinants of the perceived upright, a new procedure was developed. The S was presented with a small tilted room, on the back wall of which was a rod which he had to adjust to the true upright. In a first test, judgments of the rod were obtained with body upright, and under three different conditions of the field: (a) The S, standing at a distance from the tilted scene, viewed it through a tube which restricted his view to the interior of the scene. (b) The S stood directly in front of the scene without a tube. (c) The S stood at a distance from the scene, without a tube, so that he saw not only the tilted scene but the outer upright room as well. Under all three conditions the perceived vertical and horizontal were displaced significantly in the direction of the axes of the tilted scene. When an outer upright field was present, as in the third condition, the effect of the tilted scene upon the perceived upright diminished. In another experiment, judgments of the rod were obtained with body tilted, both to the same side as the field and to the opposite side. It was found that tilting the body resulted in an increased tendency to accept the tilted field as a basis for judging the upright. Not only were the perceived vertical and horizontal displaced further in the direction of the tilted scene, but a number of Ss perceived the tilted scene as fully upright. In another experiment there was found a tendency for the tilted scene to right itself with prolonged observation. In some cases the righting was complete, so that at the end of the observation period, the tilted scene was perceived to be fully upright. Under all conditions, striking individual differences were found in the extent to which the perceived upright was affected by the surrounding tilted field. There is evidence of considerably consistency in a person's performance under the different conditions employed.  相似文献   

5.
Abstract

This study1 explores the experience of the body for contemporary female mystics. It is an exploration in how women mystics of today—those who have devoted most of their lifetime to prayer, meditation, and spiritual service—make sense of the body. What is the relationship between spirit and body, God and flesh, for such women? Is it a relationship of tension or even opposition, and how does it evolve over time? These are some of the questions that guided my investigation. The impulse to understand how the body is experienced and understood by such women was felt by me as both a longing to challenge, deepen, and refine my awareness and understanding of spirit and the body, specifically for women mystics. I also felt this as a burning in the heart, an urgent desire to connect and bridge the larger world of matter and that of spirit, to inquire into that dimension where flesh and spirit are not two, but one. I believe that this impulse to understand the relationship between body and spirit is both personal and quite possibly collective. My hope is that this research will serve as one step to further our collective understanding of human embodiment.  相似文献   

6.
The possible moderating functions of prayer duration and belief in prayer on the prayer–well-being relation were examined. A multidimensional self-report measure of prayer including five types of prayer—Supplication, Thanksgiving, Adoration, Confession, and Reception—as well as measures of prayer duration, belief in prayer, and life satisfaction were used. On the basis of a sample of 345 Jewish religious pray-ers living in Israel it was found that for men all five types of prayer were directly related to life satisfaction. No moderating effects were found. In contrast, for women, although no significant direct relations were found between prayer type and life satisfaction, prayer duration moderated the relation between Supplication, Confession, and Reception with life satisfaction. In addition, significant three-way interactions (Prayer Type × Prayer Duration × Prayer Belief) were found for all five types of prayer. For women with a high belief in prayer, a positive prayer—well-being relation emerged when prayer duration was long, and a negative prayer—well-being relation emerged when prayer duration was short. In contrast, for women with a low belief in prayer, the opposite pattern emerged; lengthy prayer was negatively related to well-being, whereas short prayer was positively related to well-being. An explanation based on self-attributions of prayer sincerity is offered.  相似文献   

7.
A I Cogan 《Perception》1989,18(2):243-256
A modified paradigm of Crawford masking was used to link masking to brightness fluctuation, as distinct from flash brightness. Thresholds were measured for a 10 ms incremental pulse (the 'probe') presented before, during, or after a 500 ms pulse (the 'flash'). Both pulses were spatially coextensive with the background field, thus the criterion for probe detection was purely temporal. The flash occurred either in the tested eye, the opposite eye, or in both eyes. In all conditions, masking was strongly bimodal: thresholds peaked near flash onset and flash offset. The flash was perceived as a unitary event. Bimodal masking is attributed to cortical on-and off-effects, as (i) dichoptic masking was strong and (ii) the same incremental probe was masked by either incremental or decremental flashes. Strikingly, monocular probe thresholds were about equally elevated by binocular as by monocular flashes, although the binocular flashes were brighter. Therefore, some monocular features can be preserved in the larger net binocular response. A general conclusion is that masking depends on the same transient neural responses that bring about a brightness fluctuation, whereas the appearance of the flash as a single event, a unitary change of brightness, depends on a different mechanism, perhaps a sustained response that performs a temporal filling-in.  相似文献   

8.
Rubinstein-Taybi Syndrome was first described in 1957 but only in 1963 as a distinguishable type of moderate mental retardation. The cause is still unknown although some type of genetic origin is possible. No consistent chromosomal abnormality has been demonstrated, the chromosomal analysis is normal, and cases are generally not considered hereditary. The recurrent risk for siblings is approximately 0.1% but may be as high as 50% for offspring of patients with the syndrome. The Rubinstein-Taybi syndrome is not at present detectable before birth and is evenly found in both males and females. The syndrome was thought to be rare but an increase in the number of reported cases each year suggests it is not as rare as estimated. It is thought to occur in about 1 in 300,000 births, and since it has become readily identifiable, more than 400 cases have been reported worldwide.  相似文献   

9.
Skinner's contributions to psychology provide a unique bridge between psychology conceptualized as a biological science and psychology conceptualized as a social science. Skinner focused on behavior as a naturally occurring biological phenomenon of interest in its own right, functionally related to surrounding events and, in particular (like phylogenesis), subject to selection by its consequences. This essentially biological orientation was further enhanced by Skinner's emphasis on the empirical foundations provided by laboratory-based experimental analyses of behavior, often with nonhuman subjects. Skinner's theoretical writings, however, also have affinity with the traditions of constructionist social science. The verbal behavior of humans is said to be subject, like other behavior, to functional analyses in terms of its environment, in this case its social context. Verbal behavior in turn makes it possible for us to relate to private events, a process that ultimately allows for the development of consciousness, which is thus said to be a social product. Such ideas make contact with aspects of G. H. Mead's social behaviorism and, perhaps of more contemporary impact in psychology, L. Vygotsky's general genetic law of cultural development. Failure to articulate both the biological and the social science aspects of Skinner's theoretical approach to psychology does a disservice to his unique contribution to a discipline that remains fragmented between two intellectual traditions.  相似文献   

10.
Target identification is impaired when targets are presented during the planning or execution of a compatible response (e.g., right-pointing arrow during a right keypress) relative to an incompatible response (Müsseler & Hommel, 1997 a, b). Examinations of this blindness to response-compatible stimuli have typically used arrowheads as targets ("<" and ">"). The importance of the target symbol was examined by manipulating subjects' interpretation of that symbol (i.e., ">" interpreted as a right-pointing arrow or as a headlight shining to the left). Targets were presented at varying times during the planning or execution of a response in order to examine the time-course of the effect. Results showed that the interpretation, and not the physical identity, of the target was important for the blindness effect. Although the blindness effect was largest during the planning and execution of a response, it was not always confined to that temporal interval.  相似文献   

11.
Most psychologists have heard of Thurstone, and know him as a pioneer of mathematical psychology and factor analysis. But his appearances in history books are rare and peripheral, as a man of technical prowess rather than intellectual achievement, and at best he is seen as a link in the tradition culminating in signal detection and mathematical learning theory. Nineteen eighty-seven is the centenary of his birth, so it is a timely moment to correct this picture. Thurstone was influenced by G. H. Mead, and his work is best placed within the pragmatist movement, not as moving towards the mechanistic psychology that now dominates psychology. Viewed in this way, his true status and the reasons for his relative neglect become apparent. This is illustrated by a detailed consideration of his mathematical learning models.  相似文献   

12.
Pinch-sustaining tasks such as holding a pencil, fork, or key require the exertion of different levels of force. There is little information concerning normal subjects' ability to discriminate differences in their pinching force, so the purpose of this study was to evaluate the ability of 24 normal young women to discriminate differences in their self-generated isometric tip and lateral pinching force. Resistance forces of 10, 25, 50, and 75% of known normal maximum pinching force were selected as standards. Subjects were presented a series of paired resistance settings of which the first resistance in each pair was the standard and the second resistance a comparator of some greater amount. This procedure of paired comparisons was continued until subjects' threshold of discrimination between two pinching forces was established. The results indicated that subjects' pinch-force discrimination at the standard of 50% of reported maximum pinching force was significantly better for the tip condition than for the lateral condition. This study has described an instrumentation and the methodology for assessing individuals' ability to discriminate differences in their pinching force at submaximal levels.  相似文献   

13.
The objective of this study was to test the efficacy and suitability of virtual reality (VR) as a pain distraction for pediatric intravenous (i.v.) placement. Twenty children (12 boys, 8 girls) requiring i.v. placement for a magnetic resonance imaging/computed tomography (MRI/CT) scan were randomly assigned to two conditions: (1) VR distraction using Street Luge (5DT), presented via a head-mounted display, or (2) standard of care (topical anesthetic) with no distraction. Children, their parents, and nurses completed self-report questionnaires that assessed numerous health-related outcomes. Responses from the Faces Pain Scale-Revised indicated a fourfold increase in affective pain within the control condition; by contrast, no significant differences were detected within the VR condition. Significant associations between multiple measures of anticipatory anxiety, affective pain, i.v. pain intensity, and measures of past procedural pain provided support for the complex interplay of a multimodal assessment of pain perception. There was also a sufficient amount of evidence supporting the efficacy of Street Luge as a pediatric pain distraction tool during i.v. placement: an adequate level of presence, no simulator sickness, and significantly more child-, parent-, and nurse-reported satisfaction with pain management. VR pain distraction was positively endorsed by all reporters and is a promising tool for decreasing pain, and anxiety in children undergoing acute medical interventions. However, further research with larger sample sizes and other routine medical procedures is warranted.  相似文献   

14.
15.
Margaret Floy Washburn was one of the first generation of leading psychologists trained in America and became an eminent and influential psychologist during the first third of the 20th century. She was recognized for significant contributions in theory development, experimental work, teaching, and professional service, but this paper focuses on her activities as director of the psychology program at Vassar College and author of the classic text in comparative psychology, The Animal Mind . Although full biographical details are not given, a listing of bibliographic sources is provided so that scholars might more readily obtain access to information omitted from the paper. The discussion also considers Washburn's professional life and personal characteristics and how she might be viewed as a role model.
"Nothing in the world is so compelling to the emotions as the mind of another human being" (Washburn, 1916b, p. 606). This statement, tucked away in an essay on the psychology of esthetic experience in music, provides an insightful clue to one of the motivations which sustained Margaret Floy Washburn's significant career as one of the most influential psychologists in psychology's first half–century as a distinct discipline. She held a life long fascination with the minds of humans and animals and was convinced that experimental psychology provided the appropriate methodology for exploring the topic. She devoted her unflagging energy and outstanding ability to the newly evolving science throughout a 43–year career which covered the period 1894–1937.  相似文献   

16.
Periods of social upheaval, by revealing aspects of behavior ordinarily repressed, provide an opportunity for deepening out insights into the nature of man. The searing experience of Watergate is viewed not as the psychopathology of a man, or the group psychology of forty men under the ex-President, but as reflecting psychic processes at the base of the population pyramid. The people supported Nixon for a quarter century during which his character traits were known, and were in collusion with the cover-up to the end during the two and half years of Watergate. The theory is advanced that this was due to an identification with Nixon based on the universal wish to triumph over the superego. Ego-superego conflicts are as ubiquitous and ongoing in mental life as the struggle between ego and id. The latter results in neuroses, the former in compromises of integrity. The 'syndrome of the compromise of integrity' is on a par with neurosis in human affairs.  相似文献   

17.
This paper has focused on the sense of helplessness as an essential component of a depressive reaction. By inference, a sense of mastery and ability to achieve goals seems essential for a sense of well-being. Both patients presented here revealed infantile fantasies that hampered their exercising this mastery, and the path to well-being was the analysis of these fantasies. The treatment plans differed, though, in the locus of the fantasies. In an object-related depression such as Mr. Janson's, the fantasy involved the inhbition of functioning--that is, the inability to express aggression--and the treatment aimed at removing the inhibition. In a narcissistic depression such as Miss Gaynor's, the helplessness was not due to inhibited functioning per se. Rather, her goals were unrealistic, unattainable, and based on unconscious fantasies. Here the aim of treatment was the development of more reality-adapted and attainable objectives and the concommitant internalization of a more realistic sense of her own worth. Thus the common denominator in both depressive reactions was a sense of helplessness, and the path toward increased self-esteem was by way of the development of a sense of mastery and competence.  相似文献   

18.
W. H. R. Rivers was the most famous member of the Cambridge Expedition to the Torres Strait. At the time, he was a physician and had an international reputation as a researcher in physiological psychology. The expedition signaled the beginning of his career in social anthropology, but also a long hiatus in his activities in medicine. His clinical interests revived during World War I. As an officer in the Royal Army Medical Corps (RAMC), Rivers became a leading proponent of "psychological medicine." Today, his war-time psychiatry is remembered mainly in association with his patient, Siegfried Sassoon. This article focuses on his wartime activities, his clinical practices, and his theories concerning the war neuroses and the unconscious. The currently popular view of Rivers as a quasi-Freudian humanist is challenged.  相似文献   

19.
Memory for colours presented in isolation was compared with that for colours presented as part of a clip-art image or as part of a non-meaningful, Mondrian-like image. The area under the Receiver Operating Characteristic for deciding that two colours, presented at different delay intervals, were the same or different provided an index of memory for colour. The provision of a context reduced the decay of memory, regardless of whether the context was meaningful (clip-art images) or non-meaningful (Mondrian-like images). The result was seen as a generalisation of the auditory phenomenon of profile analysis, in which memory for the amplitude of a single component of a complex sound is more stable than that for the component in isolation.  相似文献   

20.
Two studies examined whether those identified as having a more present time perspective (PTP) are more likely to report using alcohol, drugs, and tobacco. In Study 1, across 2,627 participants from 15 samples, we found that PTP, as assessed by the Zimbardo Time Perspective Inventory, was related to more frequent self-reported alcohol, drug, and tobacco use (Substance Use scale: average r = .34, p <.001). Future time perspective (FTP) was negatively related to reported substance use (average r = -.16, p < .001), but the relation was weaker than that of PTP, suggesting that PTP and FTP are independent constructs. In Study 2, we found that PTP was a significant predictor of reported substance use even after controlling for many personality traits that have been related to increased substance use. These findings indicate that time perspective is an important individual difference construct that should be considered when examining health-related behaviors, such as substance use and abuse, and in planning intervention programs.  相似文献   

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