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1.
Paul Atkinson 《The Sociological review》2005,53(2):380-382
2.
Although picture‐book reading is commonplace during infancy, little is known about the impact of this activity on learning. A previous study showed that 18‐ and 24‐month‐olds imitated a novel action sequence presented in a book that was illustrated with realistic color photos, whereas they failed to imitate from books illustrated with less realistic drawings. In the research reported here, we hypothesized that increasing infants' exposure to a picture book would increase learning from books illustrated with both color photos and drawings. Independent groups of 18‐and 24‐month‐olds were exposed to a picture book either twice in succession or 4 times in succession. The results showed that, regardless of the iconicity of the illustrations, increasing the number of reading sessions significantly improved the infants' imitation scores, compared to age‐matched, no‐demonstration controls. The results are discussed in relation to representational insight and cognitive flexibility. 相似文献
3.
The problem considered is that of finding an optimum measurement schedule to estimate population parameters in a nonlinear model when the patient effects are random. The paper presents examples of the use of sensitivity functions, derived from the General Equivalence Theorem for D-optimality, in the construction of optimum population designs for such schedules. With independent observations, the theorem applies to the potential inclusion of a single observation. However, in population designs the observations are correlated and the theorem applies to the inclusion of an additional measurement schedule. In one example, three groups of patients of differing size are subject to distinct schedules. Numerical, as opposed to analytical, calculation of the sensitivity function is advocated. The required covariances of the observations are found by simulation. 相似文献
4.
Anthony C. Atkinson 《Journal of the Royal Statistical Society. Series C, Applied statistics》2003,52(3):261-278
Summary. The paper develops methods for the design of experiments for mechanistic models when the response must be transformed to achieve symmetry and constant variance. The power transformation that is used is partially justified by a rule in analytical chemistry. Because of the nature of the relationship between the response and the mechanistic model, it is necessary to transform both sides of the model. Expressions are given for the parameter sensitivities in the transformed model and examples are given of optimum designs, not only for single-response models, but also for experiments in which multivariate responses are measured and for experiments in which the model is defined by a set of differential equations which cannot be solved analytically. The extension to designs for checking models is discussed. 相似文献
5.
Alfred DeMaris Michael L. Benson Greer L. Fox Terrence Hill Judy Van Wyk 《Journal of marriage and the family》2003,65(3):652-667
We employed 4,095 couples from both waves of the National Survey of Families and Households (NSFH) to test a model of couple violence drawn from several theoretical perspectives. The outcome distinguishes among nonviolent couples and those experiencing either physical aggression or intense male violence. According to the model, background characteristics of couples are related to relationship stressors, which affect the risk of violence via their tendency to promote verbal conflict. Considerable support for the model was found. Couples were at higher risk for one or both forms of violence if they were younger at union inception, had been together for less time, were both in their first union, had only one partner who was employed, had a nontraditional woman paired with a traditional man, had at least one partner who abused substances, had more children, had more frequent disagreements, exhibited a more hostile disagreement style, or lived in an economically disadvantaged neighborhood. Moreover, the effects of stressors such as the number of children and couples' employment status disparities appear to be mediated by disagreement frequency and disagreement style. 相似文献
6.
In this article, we provide a brief introduction to the work of Michel Foucault. Our focus is on the major themes of Foucault's work: discourse, power/knowledge and subjectivity. We demonstrate the rich contribution that Foucauldian theory can make to public relations practice and scholarship by moving beyond a focus on excellence towards an understanding of public relations as a discourse practice with power effects. 相似文献
7.
This article explores the qualitative process findings from an evaluation of Project Jump — a sexual health drama project for hard to reach young people. Project Jump aimed to enable young people to consider their sexual behaviour and its impact and consequence on other people and themselves. The research aimed to capture the experiences and perceptions of young people's involvement in the project, particularly in relation to the use of drama as a medium for learning. Findings from young people demonstrate that drama can offer an important alternative to traditional health promotion in that young people articulated positive aspects of their involvement. These included enthusiastic participation, empowerment and sexual health skills acquisition. In addition, critical areas for consideration for policy‐makers and practitioners in employing a drama‐based approach particularly in relation to effective identification, engagement and ongoing follow‐up activity with vulnerable groups are highlighted. © 2006 University of the West of England. Journal compilation © 2006 National Children's Bureau. 相似文献
8.
Judy Dunn 《Social Development》1996,5(3):230-250
Developmental changes in children's relationships with their mothers and older siblings between 33 and 69 months of age were investigated in a longitudinal study of 47 families, through an examination of family conversations and affect expressed during unstructured home observations. Mother-child interaction decreased and sibling interaction increased markedly over the period. The prominence of reflective commentary in children's discourse increased while self-interested moves decreased with both partners; however differences in emotional expression and in patterns of change in the two relationships were marked, with more positive and negative emotion and play with siblings. Individual differences in the trajectory of these changes were correlated with early differences in social understanding, and with SES. The association between children's developing social understanding and these changes in relationships is discussed. 相似文献
9.
A comparison is undertaken between scale development and index construction procedures to trace the implications of adopting a reflective versus formative perspective when creating multi‐item measures for organizational research. Focusing on export coordination as an illustrative construct of interest, the results show that the choice of measurement perspective impacts on the content, parsimony and criterion validity of the derived coordination measures. Implications for practising researchers seeking to develop multi‐item measures of organizational constructs are considered. 相似文献
10.
This study examines how the interplay among crisis involvement, brand image, and message appeal impacts the effectiveness of an apology in the context of a corporate crisis. To determine apology effectiveness, a 2 (crisis involvement: high vs. low) × 2 (brand image: symbolic vs. functional) × 2 (message appeal type: emotional vs. informational) experimental design was employed. The results demonstrate that the three-way interaction is significant, especially in the low-crisis involvement condition. The study concludes with a discussion of theoretical and practical implications and directions for future research. 相似文献