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21.
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
22.
James B. Olsen Apryl Cox Charles Price Mike Strozeski Idolina Vela 《Educational Measurement》1990,9(2):7-10
How does a testing component function in an integrated learning system? How can you customize computerized tests to meet local specifications? How are computerized tests implemented and evaluated? Is the pay-off of computerized testing justified? 相似文献
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The design and delivery of a professionally-oriented, management, doctoral programme introduces new criteria for the selection and training of mentors and supervisors. An internationally dispersed student body of mobile, senior business and academic professionals compounds the problems. This article considers alternative models for delivery and exemplifies course design issues through a development in a major management college. Issues of semi-remote and remote mentoring and supervision are illustrated with examples from a Doctor of Business Administration (DBA) programme, showing the need for disaggregation and reconstitution of the mentoring and supervisory roles and their sensitive application, given the international mobility of most of the students. 相似文献
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Marnie Best Deborah Price Faye McCallum 《International Journal of Inclusive Education》2013,17(4):422-434
The middle years of school represent a time of educational turbulence, serving to marginalise some students from educational opportunities. Much research has focussed on individual cognitive factors influencing educational engagement, with less attention directed towards social interactions. Theoretically positioned within an expectancy–value model of achievement motivation, this study draws on the lived experience of a 12-year-old student within an alternative school in South Australia, Australia, to explore how social encounters may contribute to educational marginalisation. Findings from a narrative case study employing a semi-structured interview suggested that connections exist between social influences, such as interactions with teachers and peers, and subsequent achievement motivation. This study suggests that social interactions are critical determinants to an individual's educational engagement, affecting educational ability, expectancy and value beliefs. 相似文献
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David Armstrong Deborah Price Tim Crowley 《Emotional and Behavioural Difficulties》2013,18(4):381-397
Teachers are key professionals in responding to children and adolescents with possible mental health difficulties and who exhibit social, emotional or behavioural difficulties in the classroom. Health and education policy increasingly positions teachers as vital agents in connecting mental health services with affected young people. A growing corpus of research, however, questions practitioners’ capacity to undertake this important role, particularly given the limited space afforded to content around mental health in pre-service teacher education. This paper reports on a qualitative case study, conducted in an Australian context, investigating pre-service teacher responses to five vignettes of young people presenting behaviours indicative of possible mental health difficulties. In light of educator expectations to identify and appropriately respond to mental health difficulties, this study discloses the need for explicit, structured mental health guidance which form a discrete, core ‘knowledge base’ of teacher education. Patterns in data, analysed in light of policy literature, also suggest the value inherent in advocating open-minded, non-judgemental and collegial professional responses. Further research opportunities highlighted include a systematic review of current provision around mental health in pre-service teacher education programmes. 相似文献
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Matt Allwood Kate Allen Anna Price Rachel Hayes Vanessa Edwards Susan Ball 《Emotional and Behavioural Difficulties》2013,18(4):361-371
ABSTRACTThis paper assesses the reliability and validity of the teacher-completed Pupil Behaviour Questionnaire (PBQ), by comparing it to the already extensively validated teacher-completed Strengths and Difficulties Questionnaire (SDQ). Participants included 2074 primary school children participating in a universal school-based trial and 41 vulnerable children who were taking part in a study exploring the impact of exclusion from school. Exploratory factor analysis results (first factor accounts for 80.8% of the variation in the items) and the high Cronbach’s alpha value of 0.85 indicate that the PBQ consists of one substantive factor/dimension. Strong correlations between the total PBQ score and the conduct sub-scale (Spearman’s correlation coefficient (rs) = 0.67) and total difficulties score (rs = 0.59) of the SDQ indicate convergent validity. This study suggests that the PBQ is a reliable measure, and provides some evidence of validity. Further work is needed to test the PBQ in an older, more diverse populations and to measure sensitivity to change. 相似文献
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