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81.
82.
The aim of this study was to improve 7th- and 8th-grade students' (N = 83) compare–contrast reports when writing from sources. An instructional unit was designed and implemented for this purpose. It focused on increasing students' knowledge of compare–contrast text structure and on having students memorize and use a table to plan the structure of their reports. There was a large effect size of instruction, such that students in the instruction group made far greater gains in the holistic and structural quality of their writing (from pretest to posttest) than students in the control group.  相似文献   
83.
We examined the effect of experimenter-controlled incentives and feedback on the calibration of performance. Subjects answered 36 reading comprehension and 8 mathematical multiple-choice questions and rated the accuracy of their responses. Perfect calibration was possible only when true and estimated test performance were approximately equal. Incentives for improved performance (i.e., doubling the credit people received for correct answers) adversely affected performance and calibration compared to the same incentives for improved calibration (i.e., doubling credit for minimizing the error between true and estimated performance). Feedback had no effect on performance or accuracy nor did it interact with the incentive variable. An examination of coefficient α suggested a strong response bias by individuals when calibrating their performance; individuals tended to rate their performance accuracy consistently regardless of item difficulty or whether they answered the item correctly. Educational implications were discussed.  相似文献   
84.
This study was designed to examine differences and similarities in the writing of 15 language-impaired, 17 dyslexic and 15 typically developing control subjects matched on chronological age. Subjects ranging in age from 11 to 21 years were required to produce a written language sample using an expository text-retell procedure. The writing of these groups was compared on eight variables across discourse, T-unit, sentence, and word levels. Control subjects performed better than language-impaired and dyslexic subjects on all writing variables. Dyslexic subjects showed better performance than the language-impaired subjects on several variables including, (a) number of T-units, (b) number of ideas, (c) total number of words, and (4) number of different words while showing comparable performance on percentage of spelling and production of grammatically correct sentences. These findings support Bishop and Snowling’s [Psychol. Bull. 130 (2004) 858] position that the differences between these two clinical populations exist in the non-phonological dimensions of language.  相似文献   
85.
The objectives were to characterize behavioral signs of autism spectrum disorder (ASD) in younger siblings of diagnosed children (high-risk; HR) and examine classification features of the Autism Observation Scale for Infants (AOSI). Participants (501 HR and 180 low-risk [LR]) were assessed between 6 and 18 months using the AOSI and at age 3 for ASD diagnoses. Total AOSI scores differentiated HR infants later diagnosed with ASD starting at 12 months. ROC analyses identified 12- and 18-month cutoff scores associated with 0.52 sensitivity and 0.74 specificity and 0.73 sensitivity and 0.65 specificity, respectively. Although classification accuracy does not support use as a standalone screen, the AOSI identifies features associated with ASD starting at 6 months and differentiates HR infants with ASD by 12 months.  相似文献   
86.
This study examined four questions: (1) How does family structure (specifically, single parenthood, married parent, and cohabitating parent) affect children's delinquency and math test scores? (2) Do these effects differ by race? (3) Do parenting practices mediate the links between family structure and children's outcomes? and (4) Does this mediation differ by race? Unlike some previous work in this area, the present study distinguished between the effects of single parenthood and cohabitation. Using fixed-effects techniques to control for unobserved heterogeneity between children in the various family structures, single parenthood was found to be associated with reduced well-being among European American children, but not African American children. Cohabitation was associated with greater delinquency among African American children, and lower math scores among European American children. No evidence was found to indicate that parenting mediated the links between family structure and children's outcomes. Finally, it was found that for African American children, measures of maternal warmth and the provision of rules had direct effects on children's delinquency.  相似文献   
87.
The need to prepare students with twenty-first-century skills through STEM-related teaching is strong, especially at the elementary level. However, most teacher education preparation programs do not focus on STEM education. In an attempt to provide an exemplary model of a STEM unit, we used a rapid prototyping approach to transform an inquiry-based unit on moon phases into one that integrated technology in a meaningful manner to develop technological literacy and scientific concepts for pre-service teachers (PSTs). Using qualitative case study methodology, we describe lessons learned related to the development and implementation of a STEM unit in an undergraduate elementary methods course, focusing on the impact the inquiry model had on PSTs’ perceptions of inquiry-based science instruction and how the integration of technology impacted their learning experience. Using field notes and survey data, we uncovered three overarching themes. First, we found that PSTs held absolutist beliefs and had a need for instruction on inquiry-based learning and teaching. Second, we determined that explicit examples of effective and ineffective technology use are needed to help PSTs develop an understanding of meaningful technology integration. Finally, the rapid prototyping approach resulted in a successful modification of the unit, but caused the usability of our digital instructional materials to suffer. Our findings suggest that while inquiry-based STEM units can be implemented in existing programs, creating and testing these prototypes requires significant effort to meet PSTs’ learning needs, and that iterating designs is essential to successful implementation.  相似文献   
88.
Commonly used early childhood curricula were examined to consider the degree to which they support research-based instruction for phonological awareness (PA) and phonics. A content analysis was completed for two types of curricula widely used in Head Start: overarching general curricula and lesson-based curricula, which usually provide more explicit teaching instructions. Both types of curriculum demonstrated the same pattern of findings; while all curricula included some content aligned with standards, programs differed greatly in the number of objectives and instructional strategies included for PA and phonics instruction. Overall, curricula were most likely to address earlier developing PA skills (e.g., rhyming, alliteration) with more limited attention to advanced skills that are closely linked with reading development (e.g., segmenting and blending of phonemes). Phonics instruction was not included often in any of the curricula studied, and opportunities for individualizing instruction were rare, particularly for children with special needs. Results suggest that instructional recommendations for PA and phonics in most of these commonly-used Head Start curricula, even those curricula which typically provide more explicit instruction for teachers, do not align with the instruction provided in effective intervention studies, and therefore may not be powerful enough to influence children’s reading trajectories.  相似文献   
89.
Biases against the elderly and people with disabilities can lead to discriminatory behaviors. One way to conceptualize attitudes toward the elderly and people with disabilities is through the differentiation of explicit (conscious) and implicit (unconscious) factors. Although both explicit and implicit attitudes and biases contribute to the full picture of peoples’ attitudes, explicit ideas alone may not accurately reflect people’s attitudes. This may be due to societal pressure to conceal explicit biases or the fact that often times, people are not aware they hold prejudiced views. The Implicit Association Test is a computer-based categorization task designed to assess implicit or unconscious attitudes. This test was used in in the current study to assess the impact of an intergenerational service-learning course. We designed this study to determine if greater exposure or contact with the elderly or people with disabilities might influence college students’ implicit attitudes. Pre- and post-assessment of participating students, using the Wilcoxon signed-rank test, found statistically significant decreased biases after participation. Results from this study that suggest participating in an intergenerational service-learning course can positively affect implicit attitudes. This is encouraging, especially because these attitudes are developed over a long period of repeated exposure, are consistently reinforced by cultural factors, and are notoriously difficult to change.  相似文献   
90.
Following landmark legislation passed more than 20 years ago, university–industry relationships have now become central to understanding the changing role of research universities in American Society. The paper analyzes the development of university–industry partnerships during the 1990s. Past studies have used a broad array of measures of ties and a variety of research methodologies, but they have shared a focus on top collaborators or on samples of universities skewed toward the top. However, findings based on top collaborators may not be valid for other universities. Universities involved in mid- to low-levels of collaboration are qualitatively different in many ways from the more extensively studied set of top collaborators, suggesting that characteristics affecting university–industry ties may not be the same for these institutions. The paper shifts the focus away from top collaborators to this sizable and less studied majority. In general, we find that the same characteristics predicting high levels of involvement for the sample as a whole also predict high levels of involvement for the sub-sample of mid- and low-level collaborators. However, We find some particular characteristics of these institutions, such as land grant status, are also associated with stronger ties to industry, and that some characteristics of 25 top institutions do not predict the level of involvement of these lower-level collaborators. We will discuss whether the licensing of new technology is likely ever to become an important source of net revenues for current middle and low-level collaborators. Our findings raise doubts about whether many universities below the top 25 will earn substantial net revenues from licensing, though they do not dispute the potential service value of these ties. The study is based on examination of a wide range of potential influences on university–industry collaboration for institutions that are not currently among the most heavily involved in partnerships. These include status, other institutional characteristics (such as size and control), investment in science and engineering, and characteristics of offices or technology transfer.  相似文献   
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