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The purpose of this research was to determine whether the young child's understanding of physical causality is affected by school science instruction. Sixty-four subjects, four and one-half through seven years of age, received 300 min of instruction designed to affect the subject's conception of causality as reflected in animism and dynamism. Instruction took place for 30 min per day on ten successive school days. Pretesting was done to allow a stratified random sample to be based on vocabulary level and developmental stage as well as on age and gender. Post-testing consisted of testing of developmental level and level within the causal relations of animism and dynamism. Significant differences (1.05 level) were found between the experimental and control groups for animism. Within the experimental group, males differed significantly (1.001 level) from females. The elimination of animism appeared to have occurred. For dynamism, significant differences (0.05 level) were found only between concrete operational subjects in the experimental and control groups, indicating a concrete level of operations was necessary if dynamism was to be affected. However, a review of interview protocols indicated that subjects classified as nonanimistic had learned to apply a definition rather than to think in a nonanimistic manner.  相似文献   
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Gifted girls of color represent a potentially untapped resource for increasing and sustaining a diverse science, technology, engineering, and mathematics (STEM) workforce. Girls of color possess unique mathematics and science gifts and talents that can remain unrealized if not addressed before middle school. Culturally responsive STEM out-of-school-time (OST) activities can be an effective means to develop STEM capacity in gifted girls of color. The researchers present three considerations to support the implementation of STEM OST. First, they offer a rationale for culturally relevant STEM enrichment activities for gifted girls of color. Next, the researchers consider how culturally relevant STEM OST activities can help to close the achievement gap. Finally, they explain how professional mentorship opportunities within OST activities can help gifted girls of color navigate the STEM pipeline.  相似文献   
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Accountability mandates often prompt assessment of student learning gains (e.g., value-added estimates) via achievement tests. The validity of these estimates have been questioned when performance on tests is low stakes for students. To assess the effects of motivation on value-added estimates, we assigned students to one of three test consequence conditions: (a) an aggregate of test scores is used solely for institutional effectiveness purposes, (b) personal test score is reported to the student, or (c) personal test score is reported to faculty. Value-added estimates, operationalized as change in performance between two testing occasions for the same individuals where educational programming was experienced between testing occasions, were examined across conditions, in addition to the effects of test-taking motivation. Test consequences did not impact value-added estimates. Change in test-taking motivation, however, had a substantial effect on value-added estimates. In short, value-added estimates were attenuated due to decreased motivation from pretest to posttest.  相似文献   
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Ten rats were trained to press a right lever following two successive sounds and to press a left lever following four successive sounds. Three sound sequences were used in initial discrimination training, such that reliable classification could not be based on the duration of each sound, the interval between sounds, or the total duration of the sound sequence. Classification of seven novel sound sequences suggested that the animals were either using number or the sum of sound durations in a sequence as the relevant cue. When this total sound duration was put in conflict with number, rats classified by number. The conclusion was that rats can discriminate number, even when temporal cues are controlled.  相似文献   
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Instructors in multi-major professional communication courses are asked to teach students a variety of workplace genres. However, teaching genres apart from their contexts may not result in transfer of knowledge from school to workplace settings. We propose teaching students to research genre use via activity theory as a way of encouraging transfer. We outline theory and research relevant to teaching genre and provide results from a study using activity theory to teach genre in two different professional communication courses.  相似文献   
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Purpose: This paper explores the intersections between community development and youth development in an initiative that mobilized farmers’ children as Rice Crop Manager (RCM) infomediaries (information mediators). RCM is an ICT-enabled nutrient management application.

Design/Methodology/Approach: The study engaged 30 farmers’ children in high school level from the provinces of Pangasinan, Isabela, Camarines Sur, Iloilo, Bukidnon, and Davao del Norte from November 2016 to October 2017. They interacted with the research team (the authors) and the RCM-SMS platform that sends text messages regarding fertilizer recommendations. A staff member from the Agricultural Training Institute (ATI) also called the students for some follow-up questions. The research team conducted three rounds of interviews with the students concerning the messages and calls that they received and what they did with the information.

Findings: This study finds that farmers’ children can perform infomediary roles quite effectively. Academically excellent children and those involved in farm work performed best.

Practical Implications: The study provides guidance on similar initiatives tapping young people in agricultural development.

Theoretical Implications: This paper finds that while Community Youth Development (CYD) Theory provides a powerful lens in understanding community and youth development intersections, some identified outcomes may overlap and may not be very easy to observe. Hence, the identified outcomes may be revisited for clarity and to make them more all-encompassing.

Originality/Value: The paper documents actual parent-child interaction when the latter is mobilized to serve as an infomediary to access nutrient management-related information on rice.  相似文献   

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Three tests of receptive language were administered to thirty children enrolled in regular, gifted, and learning disabled‐gifted programs. Analyses of variance indicated that the Token Test for Children differentiated the learning disabled‐gifted children and the Verbal Absurdities Subtest of the Detroit Tests of Learning Aptitude differentiated the gifted children from the other two groups.  相似文献   
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