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111.
Despite the impact of genetics on daily life, biology undergraduates understand some key genetics concepts poorly. One concept requiring attention is dominance, which many students understand as a fixed property of an allele or trait and regularly conflate with frequency in a population or selective advantage. We present the Dominance Concept Inventory (DCI), an instrument to gather data on selected alternative conceptions about dominance. During development of the 16-item test, we used expert surveys (n = 12), student interviews (n = 42), and field tests (n = 1763) from introductory and advanced biology undergraduates at public and private, majority- and minority-serving, 2- and 4-yr institutions in the United States. In the final field test across all subject populations (n = 709), item difficulty ranged from 0.08 to 0.84 (0.51 ± 0.049 SEM), while item discrimination ranged from 0.11 to 0.82 (0.50 ± 0.048 SEM). Internal reliability (Cronbach''s alpha) was 0.77, while test–retest reliability values were 0.74 (product moment correlation) and 0.77 (intraclass correlation). The prevalence of alternative conceptions in the field tests shows that introductory and advanced students retain confusion about dominance after instruction. All measures support the DCI as a useful instrument for measuring undergraduate biology student understanding and alternative conceptions about dominance. 相似文献
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113.
Michelle Gordon Allison Haack Rebecca Vernon Tiffany Saulter Debora Shaw 《Public Library Quarterly》2014,33(2):145-154
How do public libraries develop their collections of high-demand materials for the “I want it now” generation? Ten public libraries’ holdings of fiction and nonfiction bestseller titles were observed over a four-week period. The number of copies rose fairly consistently, with the five fiction titles having roughly about twice the number of copies as the five nonfiction titles. The ratio of holds to copies averaged 2.7:1 and ranged from 0.8:1 to 6.5:1. Demand for e-books was consistently higher than the number of copies available, averaging more than 4:1 across all libraries. 相似文献
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Josh Corngold Rebecca M. Katz Anne Newman D.C. Phillips 《Journal of Philosophy of Education》2005,39(1):123-139
The Blackwell Companion and Blackwell Guide to the philosophy of education, edited respectively by Randall Curren and by Nigel Blake, Paul Smeyers, Richard Smith and Paul Standish, are potentially field-defining volumes. The present essay moves back and forth between the two books to assess the overall impression they provide of the 'state of the art'. Whilst both texts can be criticised for failing to engage sufficiently with non-philosophical work on education, these are otherwise estimable volumes, containing many fine essays that can be read with profit. 相似文献
116.
The aims of the EVINCE research projectincluded examination of the impact of information on the clinical knowledge and practice ofnurses, midwives and health visitors. EVINCE (Establishing the Value of Information to NursingContinuing Education) was funded by the British Library R&D Department for 1 year, from 1November 1995 to 31 October 1996. The methods employed (based on those used in the Valueproject) included a critical incident type study to establish patterns of information need and useamong a random sample of nursing professionals. The nature of the impact of informationobtained on present and future competencies was assessed from a survey of the searches andrequests presented to library and information services. Nurses, midwives and health visitors didvalue the information (96% of respondents agreed that there was, or would be an effect onfuture practice through enhanced competence in one or more areas). The impact findings can beused to guide a more precise assessment of information needs. 相似文献
117.
"Pro-choice" suicide sites come under legal scrutiny(详细审查) After her grandmother died, 21-year-old Julie Veteto sank into a severe depressions. Still, her family was stunned the afternoon her husband, Roger, came home to find her body dangling(摇摆) from a dog leash in their bathroom doorway. The couple's computer was still connected to the Internet. On the screen: a Web site with detailed information on suicide by hanging. 相似文献
118.
Rebecca H. Goodwin Michael L. Cunningham Teresa Eagle 《Journal of educational administration and history》2005,37(1):1-17
This paper reviews the historical development of the secondary principalship in the US and examines how the current role of the principal is a result of historical forces. The authors consider a preferred future for the principalship and present recommendations for change. 相似文献
119.
This study investigated teachers’ knowledge of, and capacity to identify resilience, in 92 primary school children in Far
North Queensland. It was found that although teachers’ knowledge of resilience was apparently strong, and they reported a
significant level of confidence in their ability to assist children in building resilience, their capacity to identify levels
of resilience in their students was lacking. The paper concludes with suggestions for future research. 相似文献
120.
The present study describes and compares seating preferences among Taiwanese and American respondents. Using a questionnaire method, seating preferences were obtained for 75 male and 100 female college students from the United Slates, and for 29 male and 54 female teachers of English in Taiwan. Responses were obtained for all possible combinations of sex of interaction partner, location (task or social), and six interpersonal activities. Results were summarized in the form of proportions of respondents choosing each of four possible angles of interaction: corner, opposite, diagonal, and side seating. Comparisons were made using Chisquare tests for independence.In general, results showed that Taiwanese respondents, when compared to Americans, are more likely to prefer side seating and less likely to prefer corner seating. Culture, sex of respondents, and sex of interaction partner interact in influencing preferences. In the United States, seating preferences function to unite males with females and to separate same-sex partners, while the opposite is true in Taiwan. Results are interpreted in terms of implications for intercultural communication. 相似文献