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The present study evaluated the role of compatibility effects in the precuing of arm and direction parameters. In the first two experiments different stimulus and response arrangements were examined. For all three experiments the spatial precue and imperative stimuli were compatibly assigned to responses (i.e., a direct correspondence existed between the stimulus and response locations). Experiments 1 and 2 indirectly tested the effect of decision processes required by the stimulus-response set. Experiment 1 replicated previous research that has found longer reaction times for the direction uncertain parameter as compared to arm uncertain. Experiment 2 examined the precuing of arm and direction parameters with stimuli that maintained right-left arrangements for both parameters. Unlike Experiment 1, reaction times did not differ for precuing the two movement parameters. Experiment 3 directly examined the effect of differential decision requirements from up-down spatial stimuli and right-left spatial stimuli for a single parameter. In support of results from the first two experiments, results indicated longer reaction times for decisions from up-down stimuli as compared to right-left stimuli. Because reaction times for precued movement parameters are a function of the stimulus and response arrangements used, differences in reaction times are most likely due to compatibility effects arising from differences in the spatial arrangements of the precued stimulus and response set. 相似文献
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T. Gilmour Reeve Lanie A. Dornier Daniel J. Weeks 《Research quarterly for exercise and sport》2013,84(3):284-290
Abstract To investigate whether spatial assimilation effects are due to premovement control processes or postinitiation feedback processes, surface EMG recordings were made from two agonists and one antagonist during both single and dual movements involving the upper limb(s). In the single condition, subjects (N=7) made 25 Short (20°) and 25 Long (60°) reversal movements using levers in the sagittal plane, in 195 ms to reversal. In the dual condition, both Short and Long movements were performed simultaneously for 75 trials, the last 25 of which were without knowledge of results. Subjects overshot the Short target in the dual condition, showing spatial assimilation effects. Overshooting was associated with increased peak EMG in the initial (premovement) agonist burst, supporting the notion that spatial assimilation effects are modulated via premovement control processes. 相似文献
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A pilot study was conducted to evaluate and improve the rating procedure proposed for use in a research effort designed to assess the essay writing ability of college sophomores.Generalizability theory and the Many-Facet Rasch Model were each used to (a) estimate potential sources of error in the rating, (b) to obtain reliability estimates, and (c) to make recommendations for improving the rating process. Variance due to Task (writing prompt) and the Person-by-Task interaction were high while the variance attributable to Raters and Occasion was low. Twenty-two percent of the variability in the ratings was unexplained. The common and unique features of generalizability theory and the Many-Facet Rasch Model are described, and the advantages and disadvantages of each are discussed. 相似文献
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This study examined how the use of Knowledge Forum (KF)®, a networked, Internet-based learning environment, was related to the literacy development of 4-year-old children in a laboratory school affiliated with the University of Toronto. Over the course of the year, children participated in a longitudinal photo journal project. With adult support, children posted their photo journals and ideas to KF® in the form of electronic “notes”, which allowed children to view each other's work and to build on ideas by posting their responses and comments. A comparison group employed a paper-only format to write notes about their photos. Results showed that children were motivated to read others' notes and to respond using invented spelling. There were gender differences in the number of notes posted. Implications of the study are discussed regarding the motivation for literacy among boys and girls and the benefits of having electronic archives of literacy development. 相似文献
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The relation between parent interview reports of physical discipline at home, and children's acting-out school behaviors was examined in part to validate interview methods of assessment for early intervention. Parent reports of discipline methods were gathered at entrance to kindergarten, and teacher reports of acting-out behaviors were obtained twice in kindergarten and in first grade. Children who required physical discipline at home exhibited significantly more acting-out behaviors at school than did their nonphysically disciplined peers. Children who received frequent physical discipline (at least once per week) acted out significantly more than those who received infrequent physical discipline. The frequency of nonphysical discipline at home was not related to degree of acting-out school behaviors. Socioeconomic status (SES) was significantly related to acting out in first grade but not in kindergarten. The results are discussed in terms of the utility of interview methods of assessment for early intervention. 相似文献
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Research Findings: This study investigated the relationships between behavior and attention problems and early language and literacy outcomes for 4-year-olds who experienced varied early home literacy environments. Participants were 1,364 children enrolled in the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development. Attention problems and early home literacy exposure both significantly predicted language and literacy outcomes when relevant covariates were controlled. There was also a significant interaction between behavior and attention problems and early home literacy exposure in predicting expressive language abilities. Specifically, early home literacy exposure was related to more advanced expressive language achievement for children with behavior problems. In contrast, children with attention problems performed below their peers on expressive language measures even when they received comparable early home literacy exposure. Practice or Policy: These findings suggest the need for further research on the differential role of early home literacy exposure on the development of early language and literacy skills in children with behavior and attention problems. 相似文献