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The development of action representation during adolescence was investigated using a visually guided pointing motor task (VGPT) to test motor imagery. Forty adolescents (24 males; mean age 13.1 years) and 33 adults (15 males; mean age 27.5 years) were instructed to both execute and imagine hand movements from a starting point to a target of varying size. Reaction time (RT) was measured for both Execution (E) and Imagery (I) conditions. There is typically a close association between time taken to execute and image actions in adults because action execution and action simulation rely on overlapping neural circuitry. Further, representations of actions are governed by the same speed-accuracy trade-off as real actions, as expressed by Fitts’ Law. In the current study, performance on the VGPT in both adolescents and adults conformed to Fitts’ Law in E and I conditions. However, the strength of association between E and I significantly increased with age, reflecting a refinement in action representation between adolescence and adulthood. 相似文献
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The Common Core has emphasized reading for comprehension, including making inferences. However, little is known about the textual demands found within assessment and instructional passages that are promoted as being in line with Common Core expectations. The purpose of this content analysis was to identify the readability levels, passage length, and types of inferences found within 72 fiction and nonfiction passages from the PARCC, Smarter Balanced, and SAGE Common Core assessments and one core literacy program, Journeys, for students in grades three, four, and five. Results show that the readability levels of passages in this study were written at higher levels than their associated grade levels. Anaphoric relationships were by far the most common inference type found in the texts, followed by Prior Knowledge and Retrospective inferences. 相似文献
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Self-esteem scales tend to represent conditional perceptions of self-esteem. The Worth Index has been previously validated as an effective measure for identifying both conditional and unconditional perceptions of worth. We administered the Worth Index to 1,161 college-aged students at Brigham Young University to assess their current perceptions of unconditional and conditional worth. Both men and women agreed more strongly with items involving unconditional worth than conditional worth. A negative correlation was found between ratings of unconditional and conditional worth. Women had lower unconditional worth scores than men, which was related to being more likely to wish they were someone else, desire to have a better body, and to being concerned about weight. Agreement with two overview measures of self-esteem involving a "good" sense of self and stability of self-esteem was positively associated with agreement on statements about unconditional worth. This research shows the importance of incorporating unconditional worth into self-esteem measures. 相似文献
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This study examined the hypothesis that mothers' views of their child's performance on an academic task are more synchronous with those of their child than are fathers' views. Parents of 30 sixth-grade children were asked to predict their child's memory spans on a recall and a recognition task given to each child. Parents and children were also asked to judge the importance for the child's performance on 10 attribution factors created for use with memory tests. In line with the hypothesis, mothers predicted the child's memory span more accurately than fathers, and the mothers' attributions were more congruent with those of their children. Mothers were also more aware than fathers of the different demands of the two memory tasks. These findings suggest that mothers may be more aware than fathers of their child's academic progress and that mothers' attitudes and expectations may be more influential in determining the child's path of development. 相似文献
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