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601.
We explored the structural constraints on concurrent movements and/or positions of the head and a steering device by means of a reaction-time task. In the first experiment, subjects had to respond rapidly to an imperative stimulus by way of rotating a handle-bar to the left or to the right and back to the central position while they maintained a left or right eccentric position of the head. Latency of the handle-bar responses did not depend on whether their initial directions were toward the eccentric head position or in the opposite direction, but kinematic characteristics did: iso-directional movements were of larger amplitude and longer duration until peak excursion. In the second experiment, the imperative stimuli for handle-bar rotations were presented at variable intervals after the head had been moved from the central to one of the eccentric positions and before its predictable return movement. Kinematic characteristics of the handle-bar rotations depended on the left and right eccentric head positions in the same way as in Experiment 1, but now iso-directional movements had a longer reaction time than movements in the direction of the forthcoming return movement of the head. These findings suggest that specifications of head-movement directions facilitate concurrent specifications of handle-bar rotations in the same direction and inhibit specifications of handle-bar rotations in the opposite direction, consistent with the notion of cross-talk during motor programming. 相似文献
602.
D F Klein 《Journal of abnormal psychology》1999,108(3):421-429
Can psychiatric disorders be conceptualized as "harmful dysfunctions" (J. C. Wakefield, 1992a, 1992b, 1999; S. O. Lilienfeld & L. Marino, 1995)? Wakefield's (1992a) central concept of disorder as "harmful dysfunction" is discussed by placing it in the context of a complementary discussion of disease, illness, the sick role, and evolution (D. F. Klein, 1978). S. O. Lilienfeld and L. Marino (1995) contended that proper biological function cannot be determined. This argument obscures the key significance of involuntary impairment of evolved functions. The claim that the Roschian concept has no counterpart in reality is incorrect and does not support the conclusion that dysfunctions are irreducibly evaluative and therefore arbitrary. J. C. Wakefield's (1999) views in this area are supplemented. The role of monothetic and polythetic categorization, extremal terms, and the concept of normality in nosology is considered. This analysis refutes the implication that deviance and illness are equivalent. The resolution of this debate is practically relevant to emphasizing areas of research investment, such as therapeutics. 相似文献
603.
This report describes a pilot study of a waiting-list group (preliminary process group [PPG]) that provided treatment for applicants to a university affiliated, urban mental health center. All individuals on the treatment waiting list were informed of the PPG. This semistructured group, meeting weekly, began with members presenting their problems, followed by free discussion, and ending with goal setting for the next week. Approximately one seventh (35 out of 262) of the clinic's applicants during a 4 1/2-month period chose to enter the PPG. They differed from those who chose not to participate (wait list) by being older and less educated. Approximately 80% of both wait-list and PPG participants subsequently entered therapy. Significantly more PPG patients than those on the wait list entered group treatment. The PPG served clinic needs by providing prompt service for self selected individuals and by supporting the group therapy program. 相似文献
604.
N Aksan H H Goldsmith N A Smider M J Essex R Clark J S Hyde M H Klein D L Vandell 《Developmental psychology》1999,35(4):958-971
The number and nature of temperamental types in 488 children aged 3 years 6 months was examined on the basis of a broad set of temperamental characteristics, including positive and negative emotionality and the attentional and behavioral control domains. Configural frequency analysis methods showed clear support for two temperament types: controlled-nonexpressive and noncontrolled-expressive. These types showed meaningful differences against external criteria related to a wide range of problem behaviors from the emotional, social, and attentional domains. The reports of problem behaviors were obtained contemporaneously from fathers and caregivers. These findings replicated a year later when children were aged 4 years 6 months. Furthermore, the findings showed that infant and toddler-age temperamental characteristics differentiated these preschool-aged types. The authors discuss the implications of the results for a categorical view of temperament-personality. 相似文献
605.
Chronic benign pain (CBP) can be defined as a type of unpleasant sensory experience that arises from inflammation, visceral stress or damage, or other such pathophysiologic process(es), and that is not associated with a metastatic process. A patient's complaint of pain should be taken seriously by the practitioner, both in terms of the discomfort evoked and the likelihood that the potential cause of the pain requires diagnostic evaluation. This article reviews the diagnosis and treatment of the following common conditions associated with CBP syndromes: fibromyalgia, lower back pain syndrome, sickle-cell disease, reflex sympathetic dystrophy syndrome, and peripheral neuropathies. 相似文献
606.
The present study explored the psychometric properties of Turner and Engle’s (1989) operation span task, a widely used measure of working memory capacity. We administered the task three times to 33 college students, using equivalent test materials. The interval between the first and second administrations was 3 weeks, with 6–7 weeks between the second and third administrations. Alpha coefficients were all .75 or more. Recall accuracy decreased as operation set size increased. Raw test-retest correlations ranged from .67 to .81, the corrected reliability was .88, and stability scores ranged from .76 to .92. Performance improved from the first to the second test. Relative to reported reliabilities of other tasks used to assess individual differences in working memory capacity, the operation span task appears to have several statistical advantages. 相似文献
607.
Edward B. Klein Ph.D. 《Group》1993,17(4):198-209
A review of published work over the past decade and a half supports the effectiveness of the large group in clinical settings. Greater sophistication among practitioners has led to combining administrative, psychotherapeutic, and sociotherapeutic large groups and to the use of effective treatment teams and clearly defined contracts in inpatient hospital work. Some research findings suggest that large treatment groups are as effective as small therapy groups with some patient populations. There appears to be a movement toward convergence in the techniques employed by individual, small group, and large group therapists in practice, while not in theory. This positive trend in the mental health field may lead to more flexible practitioners.He is also on the board of the A. K. Rice Institute and a faculty member of the Cincinnati Psychoanalytic Institute. He would like to thank Walter Stone and Peter Herr for their comments and Lorna Volk for editing. 相似文献
608.
Julie Thompson Klein 《Knowledge, Technology, and Policy》1990,3(4):29-55
The difficulty of handling complex problems has spawned challenges to the traditional paradigm of technical rationality in
design, planning, and policy making. One of the most frequently proposed solutions is an interdisciplinary approach, though
few writers have described the operational dynamics of such an approach. A global model of interdisciplinary problem-solving
is presented based on the premise that the unity of the interdisciplinary approach derives from the creation of an intermediary
process that relies on common language, shared information, a mutual sense of stakeholding, and the resolution of disciplinary
differences. The theoretical underpinning of this approach is the conceptualization of interdisciplinary problem-solving as
a communicative process that requires attention to the rhetorical and political dynamics of working with competing interests,
practices, and disciplines. The practice portion is a composite picture of effective models, skills, activities, strategies,
and techniques employed by actuals interdisciplinary teams. This global model offers a way of both theoretically and practically
visualizing Th. K. van Lohuizen's ideal of achieving unity of town planning, an ideal that has profound implications for the
organization of both professional practice and training. 相似文献
609.
Many studies of covert orienting of visual attention in response to informative pre-cues have focused on the spatial distribution of improved or impaired performance. One can find at least four different models in the literature, each describing a different distribution: the fixed gradient spotlight; the zoom lens spotlight; the hemifield activation hypothesis; and the flexible allocation of resources model. In previous work examining procedural details that might have led to the formulation of the hemifield activation hypothesis, it was postulated (Klein and McCormick 1989) that under conditions of uncertainty about which of two locations to attend, an observer may focus attention on a visual channel (i.e., midlocation placement of a fixed gradient spotlight) that is spatially intermediate. The present experiment was designed to distinguish among the four models of attentional distribution, and to test the midlocation placement strategy. Our findings show support for midlocation placement, demonstrate evidence against flexible allocation and hemifield activation, but could not differentiate between fixed gradient and zoom lens variants of the spotlight model. 相似文献
610.
N C Klein 《The American psychologist》1990,45(9):1071-1073
An experiential view of significant issues associated with independent hospital practice for psychologists is offered through a case presentation. The example is a model of practice in effect at a 90-bed, free-standing, inpatient facility opened in 1985, that gives psychologists full professional staff privileges. 相似文献