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191.
The effects of reinforcement and extinction on response variability and stimulus generalization in the punching and kicking techniques of 2 martial arts students were evaluated across drill and sparring conditions. During both conditions, the students were asked to demonstrate different techniques in response to an instructor's punching attack. During baseline, the students received no feedback on their responses in either condition. During the intervention phase, the students received differential reinforcement in the form of instructor feedback for each different punching or kicking technique they performed during a session of the drill condition, but no reinforcement was provided for techniques in the sparring condition. Results showed that both students increased the number of different techniques they performed when reinforcement and extinction procedures were conducted during the drill condition, and that this increase in response variability generalized to the sparring condition. 相似文献
192.
Turk-Browne NB Pratt J 《Journal of experimental psychology. Human perception and performance》2005,31(5):1061-1066
When testing between spotlight and activity distribution models of visual attention, D. LaBerge, R. L. Carlson, J. K. Williams, and B. G. Bunney (1997) used an experimental paradigm in which targets are embedded in 3 brief displays. This paradigm, however, may be confounded by retinal eccentricity effects and saccadic eye movements. When the retinal eccentricities of the targets are equated and eye position is monitored, the pattern of results reported by LaBerge et al., which supported the activity distribution model, is not found. This result underscores the importance of considering targets' eccentricity and people's inclination to make saccadic eye movements in certain types of visual cognition tasks. ((c) 2005 APA, all rights reserved). 相似文献
193.
Sarah Elizabeth Gellhaus Thomas Ronald Jay Werner-Wilson Megan J. Murphy 《Contemporary Family Therapy》2005,27(1):19-35
This study considers the combined effect of therapist behaviors and couples interaction dynamics on therapeutic alliance because it seems to be a significant predictor of successful therapy outcomes. We measured therapeutic alliance using the Working Alliance Inventory, Observer Version (WAI-O), which includes three subscales: goals, tasks, and bond. We investigated the combined effect of therapist behaviors and couples interactions on therapeutic alliance. There were three significant findings: (1) the models better predicted therapeutic alliance for men clients than women clients; (2) combined consideration of partner behaviors and therapist behaviors provided the stronger prediction of therapeutic alliance; and (3) different variables predicted alliance for women clients versus men clients. 相似文献
194.
The argument from fine tuning is supposed to establish the existence of God from the fact that the evolution of carbon-based life requires the laws of physics and the boundary conditions of the universe to be more or less as they are. We demonstrate that this argument fails. In particular, we focus on problems associated with the role probabilities play in the argument. We show that, even granting the fine tuning of the universe, it does not follow that the universe is improbable, thus no explanation of the fine tuning, theistic or otherwise, is required. 相似文献
195.
The present study examines the effects of SKF 81297, a selective D1 agonist, on information retrieval in recognition and temporal order memory for objects, using three different tasks. Separate groups of rats were trained in each task and then given an intraperitoneal injection of saline or the D1 agonist (0.03, 0.3 mg/kg), before the memory testing trial in an object recognition, object location, and object temporal order memory tasks. We show that SKF 81297, at high dose (0.3 mg/kg), facilitates information retrieval after a long delay (4 h) in the three memory tasks whereas both high and low doses of D1 agonist impair recognition memory after a short delay (15 min). These results indicate a significant role of dopamine D1 receptors in recognition memory for both familiarity and place of objects in addition to object temporal order memory. 相似文献
196.
Sandak R Mencl WE Frost SJ Rueckl JG Katz L Moore DL Mason SA Fulbright RK Constable RT Pugh KR 《Cognitive, affective & behavioral neuroscience》2004,4(1):67-88
fMRI was used to investigate the separate influences of orthographic, phonological, and semantic processing on the ability
to learn new words and the cortical circuitry recruited to subsequently read those words. In a behavioral session, subjects
acquired familiarity for three sets of pseudowords, attending to orthographic, phonological, or (learned) semantic features.
Transfer effects were measured in an event-related fMRI session as the subjects named trained pseudowords, untrained pseudowords,
and real words. Behaviorally, phonological and semantic training resulted in better learning than did orthographic training.
Neurobiologically, orthographic training did not modulate activation in the main reading regions. Phonological and semantic
training yielded equivalent behavioral facilitation but distinct functional activation patterns, suggesting that the learning
resulting from these two training conditions was driven by different underlying processes. The findings indicate that the
putative ventral visual word form area is sensitive to the phonological structure of words, with phonologically analytic processing
contributing to the specialization of this region. 相似文献
197.
Inhibition of return with rapid serial shifts of attention: implications for memory and visual search 总被引:6,自引:0,他引:6
Horowitz and Wolfe (2001) suggested that inhibition of return (IOR) should not be observed in tasks that involve rapid deployments of attention. To examine this issue, five of six possible locations were sequentially cued with either short-duration peripheral cues (50 msec) or long-duration peripheral cues (500 msec). As was expected, IOR was observed in the first two experiments at every cued location with the long-duration cues, with the magnitude of IOR decreasing for earlier cued locations relative to later cued locations. In the short-cue condition, IOR was observed at only one cued location (the second to last). The pattern of results for the short-duration cues was found regardless of whether the fixation cue was of a short (Experiment 1) or a long (Experiment 2) duration. In Experiment 3, the final fixation cue was removed, and IOR was again observed at virtually all locations in both the short- and the long-cue conditions. These findings indicate that IOR can be observed at multiple locations when attention is shifted rapidly between locations. 相似文献
198.
Inhibition of return (IOR) refers to a bias against returning attention to a location that has been recently attended. In the present experiments, we examined the role of working memory in IOR by introducing secondary tasks (in the temporal interval between the cue and the target) that involved a working memory component. When the secondary task was nonspatial in nature (monitoring odd digits or adding digits), IOR was present, although overall reaction times were greater in the presence of the secondary task. When the task involved a spatial working memory load (remembering the directionality of arrows or the orientation of objects), IOR was eliminated. However, when the participants had incentive to process the directionality of an arrow but did not have to use any memory system, IOR persisted at peripheral locations. Overall, the results suggest that IOR is partially mediated by a spatial working memory system. 相似文献
199.
Examining the time course of facilitation and inhibition with simultaneous onset and offset cues 总被引:1,自引:0,他引:1
The experiment conducted examined the effect of simultaneously presented onset and offset cues on the orienting of attention in the visual field. Subjects were presented with a display that consisted of four placeholder boxes around a central fixation point. An onset and an offset cue appeared simultaneously in two of the locations, and the other two locations provided a neutral baseline condition. Reaction times were measured in a simple target detection task with stimulus-onset asynchronies (SOAs) that ranged from 100 ms to 1,000 ms. As expected, the onset cue produced early facilitation and later occurring inhibition of return (IOR). The offset cue produced significant inhibition at all but the earliest SOA. These results suggest that simultaneously presented onset and offset cues both capture attention, but that attention is rapidly disengaged from the location of the offset cue, resulting in earlier occurring IOR. For the onset cues, attention is allocated for a longer period of time, producing the typical pattern of early facilitation and later occurring IOR. The differing time course of attention at each location may reflect separate facilitatory and inhibitory processes, and the priority given to the onset of a stimulus by the attentional system. 相似文献
200.
This article evaluates Woodard's theory of Perceptually Oriented Hypnosis, a welcome addition to theories of hypnosis that emphasize the centrality of subjective experiences in understanding and studying hypnosis. With a focus on subjective experience. Woodard's account of perceptually oriented hypnosis is based on elements of humanistic, client-centered, and perceptual psychology. However, we contend that improvements in the operational clarity and coverage of the theory are necessary to optimize its utility and heuristic value. We also argue that it is important for Perceptually Oriented Hypnosis to address hypnotic phenomena, e.g., individual differences in suggestibility, involuntary responding to suggestions, stability of responding over time, widely recognized as essential to understanding hypnotic experience and responding. With these refinements, we believe that Woodard's theory would have a greater potential to enrich our understanding of both the unique experiences of individuals who undergo hypnosis and of hypnosis in general. 相似文献