Spontaneous partitioning: Pre-schoolers and discrete items     

Gary Ernest Davis  Robert Paul Hunting 《Educational Studies in Mathematics》1990,21(4):367-374

This study addresses the question of whether a dealing strategy that is widely used by young children in clinical interviews occurs in less structured situations. Our findings are that it did not in the setting we examined, namely the performance of a routine counting task, by pre-schoolers with the opportunity of sharing sweets when the task was completed. We discuss reasons for the apparent discrepancies between the results for clinical interviews and less structured situations.  相似文献   

The legacy of Robert M. Gagné     

Gary J. Anglin  Walter Dick 《Educational technology research and development : ETR & D》2003,51(2):77-78

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Enhancing rice resistance to fungal pathogens by transformation with cell wall degrading enzyme genes from Trichoderma atroviride   总被引：1，自引：0，他引：1  

刘梅  孙宗修  朱洁  徐同  HARMAN Gary E  LORITO Matteo 《Journal of Zhejiang University. Science. B》2004,(2)

INTRODUCTION Rice sheath blight (Rhizoctonia solani) and rice blast (Magnaporthe grisea) are two serious plantdiseases in China. Rice cultivars with high level and durable resistance to these two pathogens are noteasy to obtain by traditional breeding methods due to the lack of germplasm resistant to R. solani and the high genetic diversity of M. grisea. Cell wall degrading enzyme (CWDE) genes from biocontrol fungi belonging to the genus Trichoderma have been demonstrated to encode …  相似文献   

How selective are selective private colleges?     

Gary M. Lewis 《Research in higher education》1988,29(4):319-342

Comparing the admissions selectivity of colleges on the basis of accept rates can be misleading because the quality of the applicant pool is ignored. However, many rate comparisons can be improved using the demographic technique of direct standardization. In this study, SAT-specific accept rates for about 200 private four-year colleges and universities in the United States were estimated and used to compute adjusted (standardized) accept rates. College-bound high school seniors who took the SAT verbal and mathematics examinations in 1986 formed the standard populations. Standard errors for the differences in adjusted accept rates between colleges were computed so that selectivity groupings of colleges could be constructed. Results showed that selectivity rankings changed substantially depending on whether crude or adjusted accept rates were used. Adjusted rates reduced the problems of comparing admissions selectivity among colleges whose applicant quality varied significantly.  相似文献   

Accuracy of Random Groups Equating with Very Small Samples     

Gary Skaggs 《Journal of Educational Measurement》2005,42(4):309-330

This study investigated the effectiveness of equating with very small samples using the random groups design. Of particular interest was equating accuracy at specific scores where performance standards might be set. Two sets of simulations were carried out, one in which the two forms were identical and one in which they differed by a tenth of a standard deviation in overall difficulty. These forms were equated using mean equating, linear equating, unsmoothed equipercentile equating, and equipercentile equating using two through six moments of log-linear presmoothing with samples of 25, 50, 75, 100, 150, and 200. The results indicated that identity equating was preferable to any equating method when samples were as small as 25. For samples of 50 and above, the choice of an equating method over identity equating depended on the location of the passing score relative to examinee performance. If passing scores were located below the mean, where data were sparser, mean equating produced the smallest percentage of misclassified examinees. For passing scores near the mean, all methods produced similar results with linear equating being the most accurate. For passing scores above the mean, equipercentile equating with 2- and 3-moment presmoothing were the best equating methods. Higher levels of presmoothing did not improve the results.  相似文献   

Incidence and situational factors surrounding sexual assault against delinquent youths     

Robert J. Jones Ph.D.  Kenneth J. Gruber Ph.D.  Gary D. Timbers Ph.D. 《Child abuse & neglect》1981,5(4):431-440

This study reports the results of extensive interviews with an intact sample of moderately delinquent adolescents concerning their sexual assault histories. Findings indicate a surprisingly high incidence of victimization among the females interviewed which, the authors suggest, may characterize the larger population of delinquent females. The behavioral-situational contexts of reported victimization experiences are examined for salient commonalities and the following composite rape scenerio can be cast from the data: An unsupervised, 14-year-old female, who has been consuming alcohol or marijuana, is sexually assaulted, following threat and/or force, to the point of penile-vaginal penetration, by an older male friend or acquaintance (who has also consumed alcohol or marijuana) in his home or vehicle or other place where she is inherently unprotected. Some comments are offered concerning the requirements of an effective technology of child rape prevention.  相似文献   

Common core writing and language standards and aligned state assessments: a national survey of teacher beliefs and attitudes     

Gary A. Troia  Steve Graham 《Reading and writing》2016,29(9):1719-1743

A random sample of 482 teachers in grades 3 through 8 from across the United States were surveyed about (a) their perceptions of the version of the Common Core writing and language standards adopted by their state and their state’s writing assessment, (b) their preparation to teach writing, and (c) their self-efficacy beliefs for teaching writing. Regardless of grade, a majority of teachers believed that the adopted standards are more rigorous than prior standards, provide clear expectations for students that can be straightforwardly translated into activities and lessons, and have pushed them to address writing more often. However, many surveyed felt the new writing and language standards are too numerous to cover, omit key aspects of writing development, and may be inappropriate for struggling writers. Moreover, most did not feel that professional development efforts have been sufficient to achieve successful implementation, and nearly one in five respondents was not familiar with the standards. The respondents were generally less sanguine regarding their state’s writing test, with elementary teachers even less positive than middle school teachers on some aspects, though nearly a third were unfamiliar with their state test. A majority believed state writing tests, though more rigorous than prior tests, fail to address important aspects of writing development, do not accommodate the needs of students with diverse abilities, and require more time than is available to prepare students. Additionally, many teachers believed professional development efforts have been insufficient to help them understand measurement properties of the assessments and how to use test data to identify students’ writing needs. Teachers who were better prepared to teach writing and who held more positive personal teaching efficacy beliefs for writing exhibited generally more positive perceptions of their state’s standards. In contrast, only teacher efficacy beliefs made a unique contribution to the survey respondents’ attitudes and beliefs about their state’s writing test.  相似文献   

Structuring the Classroom for Performance: Cooperative Learning with Instructor‐Assigned Teams*     

Gary D. Koppenhaver  Charles B. Shrader 《Decision Sciences Journal of Innovative Education》2003,1(1):1-21

The main concern is a longstanding one in classroom instruction—the determinants of effective team performance. The paper explicitly examines the effect of teacher‐controlled factors on the use and functioning of student teams. From a sample of 500 undergraduate students, data are obtained on aptitude, diversity, instability, motivation, personality style, size, and performance. The regression results suggest that team motivation and instability, which are both partly controlled by the instructor, are particularly important in determining a team's performance. An implication is that instructor decisions about team make‐up and incentives can have a significant impact on student achievement.  相似文献   

Development of a cross-disciplinary investigative model for the introduction of microarray techniques at non-r1 undergraduate institutions          下载免费PDF全文

Walker DE  Lutz GP  Alvarez CJ 《CBE life sciences education》2008,7(1):118-131

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Counselling Maori people in New Zealand [Aotearoa]     

Mason Durie  Gary Hermansson 《International journal for the advancement of counseling》1990,13(2):107-118

This paper is an edited version of a seminal address given to a national association of counselors in New Zealand by a senior Maori figure professionally involved in the helping field. It focuses on a particular indigenous ethnic minority in terms of appropriate counseling, but has relevance for other traditionally-based cultures. After some attention to the societal context, the address considers major directions of western thought and how these have been reflected in counseling. It then suggests that these are largely inappropriate for Maori people, elaborating contrasts. Three major dimensions of Maori culture relevant to counselling are presented and developed. Finally, attention is given to ways in which counseling in New Zealand might be better developed along bicultural lines.This paper is based on an address given by Mason Durie (of the Rangitane and Raukawa Maori tribes) to a recent New Zealand Counseling and Guidance Association's Annual Conference at Palmerston North, New Zealand. The address was transcribed from tape and edited for publication by Gary Hermansson.  相似文献