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71.
We formulate Bayesian approaches to the problems of determining the required sample size for Bayesian interval estimators of a predetermined length for a single Poisson rate, for the difference between two Poisson rates, and for the ratio of two Poisson rates. We demonstrate the efficacy of our Bayesian-based sample-size determination method with two real-data quality-control examples and compare the results to frequentist sample-size determination methods. 相似文献
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Threat, Group Identification, and Children's Ethnic Prejudice 总被引:2,自引:0,他引:2
This experiment tested predictions from social identity development theory (SIDT, Nesdale, 1999 ), that children's tendency to show out‐group prejudice depends on the strength of their in‐group identification and/or their perception of threat from the out‐group. Anglo‐Australian children (N= 480) aged 6, 7, or 9 years were assigned to a high‐status team and their identification with the in‐group (high vs. low) was manipulated together with threat from the out‐group (present vs. absent). The members of the out‐group were revealed to be of the same (Anglo‐Australian) or different (Pacific Islander) ethnicity to the in‐group. Results supported the SIDT predictions. In addition, consistent with socio‐cognitive theory (ST, Aboud, 1988 ), dislike for the out‐group at 6 years gave way to increasingly neutral reactions by 9 years of age. Ethnic composition of the out‐group did not impact differentially on liking but it did affect the children's desire to change groups. Strongly identified children were reluctant to leave their group regardless of the ethnicity of the out‐group, whereas children with low in‐group identification were more willing to change into a same‐ than into a different‐ethnicity out‐group. It is concluded that both social identity and social cognitive processes are implicated in the development of prejudice in middle childhood. 相似文献
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Martin R. Owen Mark Armitage Marion Chatfield Bryan Davies David Emiabata‐Smith Steve Freeman Doug Hayes Inderjit Mann Tom Ramsay Linden Smith Barney Squires 《Pharmaceutical statistics》2003,2(1):15-29
This paper tackles the practical application of statistical tools. Chemical development is a rich area for collaboration between statisticians and chemists, but most statisticians encounter difficulties in promoting the tools to this client group. This paper, presented from a chemist's perspective, is intended to help bridge the gap between the two professions. The paper explores differences in uptake and attitudes towards adopting these techniques and suggests what has hindered or helped the process of effective application of experimental design. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
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Tom Andersen 《Australian and New Zealand Journal of Family Therapy》1992,13(2):87-91
This article discusses whether the concepts ‘relationship’, ‘expressing oneself’ and ‘pre-understanding’ might be better starting points to describe and understand ‘the therapeutic process’ than the traditional concepts ‘theory’ and ‘method’. The discussion has emerged from participation in, and will itself clarify, theso-called “reflecting processes”. 相似文献
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