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41.
Three experiments were performed to address factors contributing to the Ponzo illusion. In Experiment 1, pigeons learned to peck at the longer of two bars in varying line contexts. When these lines converged, the birds had difficulty in learning several patterns in which a Ponzo illusion would reduce the perceived difference. In Experiment 2, the subjects chose one response if a stimulus bar was longer than a predetermined length and a second response for shorter bars. The subjects were more likely to choose “long” as the stimulus bar approached the apex of converging lines. These results suggested that pigeons experience the Ponzo illusion. In Experiment 3, the effects of contexts that did and did not form a texture gradient were compared. The magnitude of the illusion did not differ according to context lines. This result failed to support a perspective theory of the Ponzo illusion. 相似文献
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Preschool children (N = 104) read a book that described and illustrated color camouflage in animals (frogs and lizards). Children were then asked to indicate and explain which of 2 novel animals would be more likely to fall prey to a predatory bird. In Experiment 1, 3- and 4-year-olds were tested with pictures depicting animals in camouflage and noncamouflage settings; in Experiment 2, 4-year-olds were tested with real animals. The results show that by 4 years of age, children can learn new biological facts from a picture book. Of particular importance, transfer from books to real animals was found. These findings point to the importance that early book exposure can play in framing and increasing children's knowledge about the world. 相似文献
44.
Associations Among Infant Iron Deficiency,Childhood Emotion and Attention Regulation,and Adolescent Problem Behaviors 下载免费PDF全文
Patricia East Erin Delker Betsy Lozoff Jorge Delva Marcela Castillo Sheila Gahagan 《Child development》2018,89(2):593-608
This study examined whether iron deficiency (ID) in infancy contributes to problem behaviors in adolescence through its influence on poor regulatory abilities in childhood. Chilean infants (N = 1,116) were studied when there was no national program for iron fortification (1991–1996), resulting in high rates of ID (28%) and iron‐deficiency anemia (IDA, 17%). Infants (54% male) were studied at childhood (Mage = 10 years) and adolescence (Mage = 14 years). IDA in infancy was related to excessive alcohol use and risky sexual behavior in adolescence through its effect on poor emotion regulation in childhood. Attentional control deficits at age 10 were also related to both infant IDA and heightened risk taking in adolescence. Findings elucidate how poor childhood regulatory abilities associated with infant IDA compromise adjustment in adolescence. 相似文献
45.
Kathleen Anderson Steeves Jessica Hodgson Patricia Peterson 《The Educational forum》2013,77(3):228-235
The continuing shortage of special education teachers, combined with increased ideological critiques of teacher education programs, has spurred the growth of alternative models of teacher preparation. Only recently have professional standards for alternative models been proposed. This paper summarizes two years of a program based on professional standards. External influences, internal design, and implementation elements are presented. Results suggest that there is value in distinguishing between the effectiveness of alternative programs and their success. 相似文献
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Kayoko C. Nakao JoAnn Damron-Rodriguez Frances P. Lawrance Patricia J. Volland 《Educational gerontology》2013,39(10):761-771
Using graduate social work students' data (n = 481) in the Hartford Partnership Program for Aging Education (HPPAE) in the United States, the study examined psychometric properties of the Knowledge of Aging for Social Work Quiz (KASW), a revision of the Facts on Aging Quiz, to evaluate biopsychosocial knowledge relevant to social work. We examined the intercorrelations of the KASW with the academic and practice experience in aging and score differences by the specialization and school year, and estimated the internal consistencies as reliability. Results showed the convergent validity of the KASW, indicating the items measured theoretically related areas of content with students' skills and experiences in aging. The internal consistencies, nevertheless, remained relatively low, representing the items that failed to measure the expected constructs of biopsychosocial domains. The KASW will be further refined to more sensitively identify students' knowledge deficiencies by selecting an optimal panel of items in biopsychosocial content areas and by providing information relevant to the pedagogical agenda and guidance in field education. 相似文献
48.
This study replicates research on the efficacy of a repeated reading intervention with word-level instruction for students in Grades 2 and 3 with low to moderate fluency skills, examines differences between treatment implementers, and tests unique contributions of treatment-related variables on outcomes. Students from 13 schools were randomly assigned to dyads; dyads were randomly assigned to treatment or control conditions. Schools were matched into treatment implementer groups (teachers or paraeducators) at study onset. Tutoring occurred during school hours for 15 weeks (M = 25.5 hr). Multilevel model results showed treatment students (n = 98) gained more than controls (n = 104) on measures of letter-sound knowledge (d = .41), fluency (d = .37–.38), and comprehension (d = .30–.31); students tutored by teachers gained more than their paraeducator-tutored peers on word reading and fluency. Finally, dyads tutored with greater fidelity gained more in word reading and fluency; dyads that read more complex words in their texts gained less on letter-sounds, fluency, and comprehension. 相似文献
49.
Patricia A. Doney 《Journal of Science Teacher Education》2013,24(4):645-664
The goal of this qualitative 2-year study was to examine the resilience building process in four novice secondary science teachers and its link to teacher retention. To achieve the research goal, a resilience framework was established. Three factors were instrumental in creating the framework. The first focused on stressors and protective factors in the lives of novice secondary science teachers and provided direction and goals for the research. Second, a case study was developed for each of the four teachers participating in the research in order to emphasize the detailed analysis of factors linked to resilience. Finally, cross-case analysis was employed to identify similarities and differences and provide insight into issues concerning the resilience process. Results of this study suggest that the interaction between stressors and protective factors acts as a primary force in the resilience process and stimulate responses to help counteract negative effects of resulting stress. Therefore, it can be reasoned that resilience can be fostered in novice teachers as a means to encourage teacher retention. 相似文献
50.
Ambumulire Nellie Itimu Patricia B. Kopetz 《Journal of Research in Special Educational Needs》2008,8(3):153-160
The sub‐Saharan country of Malawi is steeped in a robust educational reform movement to ensure ‘Education for All’. Based upon country immersion experience and a review of the literature, this report highlights Malawi's nationwide support for its special needs education (SNE) campaign. First discussed is a brief overview of Malawi, its people and its educational philosophy regarding SNE. Comparisons of sub‐Saharan countries’ educational provisions for students with special learning needs follow, as do explanations of the country's classroom practices and its national SNE Policy (revised in 2007). Described along with ‘best practices’ and the country's history of SNE teacher preparation initiatives is the structure of Malawi's SNE implementation, its design in the classroom, teacher preparation particulars and SNE programme milestones. Partners (organisations), integral to the success of Malawi's SNE efforts, are emphasised; and related policies and provisions are presented, along with closing discussion of assessment, diagnosis, programming, and future implications and conclusions. 相似文献