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81.
82.
This article provides a cross‐national perspective on successful school principalship in three countries derived from an analysis of case studies in the International Successful School Principalship Project (ISSPP). The ISSPP aims to investigate the characteristics, processes and effects of successful school leadership across eight countries (i.e. Australia, Canada, England, the United States, China, Denmark, Sweden and Norway). Examples from the USA, Norway and China (Shanghai) were selected to illustrate cross‐national differences related to the societal purposes of education, the structure and funding of different national educational systems and the influence of particular governmental educational policies (i.e. accountability‐oriented policies) on the leadership practices of individual school principals. Variations in selection criteria and research procedures were also noted. Recommendations for further research using a cultural framework include analysing multiethnic schools to identify culturally specific leadership practices as well as developing further ISSPP case studies in non‐Western contexts.  相似文献   
83.
Using a framework based on social cognitive career theory, we conducted 38 interviews and four focus groups with college students to identify motivations and barriers faced by underrepresented groups to natural resource careers. Interviews revealed career satisfaction as the most important goal for both natural resource and a comparison of liberal arts students. School difficulty and outsider perceptions were barriers for both groups. Natural resource students faced family pressure to pursue other careers. Focus groups with natural resource students using Q methodology revealed participation in outdoor recreation, exposure to nature-related media, and witnessing environmental degradation as important influences. Barriers included perceptions of ethnic/racial discrimination, financial pressures, and lack of confidence. Results may help academia and agencies better address motivations and barriers to natural resource careers.  相似文献   
84.
This research explores issues related to the sequencing of structure that is provided as pedagogical guidance. A study was conducted that involved grade 10 students in Singapore as they learned concepts about electricity using four NetLogo Investigations of Electricity agent-based models. It was found that the low-to-high structure learning sequences group participants scored significantly higher on the posttest assessments of conceptual and procedural understanding of electricity concepts, whereas the high-to-high structure learning sequences showed no significant changes from pretest to posttest. The implications of these findings are discussed with respect to other research into the sequencing and design of pedagogical structure and guidance in the literature.  相似文献   
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86.
This article proposes a conceptual framework of learning based on perspectives and methodologies being employed in the study of complex physical and social systems to inform educational research. We argue that the contexts in which learning occurs are complex systems with elements or agents at different levels—including neuronal, cognitive, intrapersonal, interpersonal, cultural—in which there are feedback interactions within and across levels of the systems so that collective properties arise (i.e., emerge) from the behaviors of the parts, often with properties that are not individually exhibited by those parts. We analyze the long-running cognitive versus situative learning debate and propose that a complex systems conceptual framework of learning (CSCFL) provides a principled way to achieve a theoretical rapprochement. We conclude with a consideration of more general implications of the CSCFL for educational research.  相似文献   
87.
Dyslexia is assumed to be frequent amonginmates in prisons and in juvenileinstitutions. However, it remains unclearwhether the literacy difficulties observed arereally dyslexic in nature. Seventy inmates injuvenile institutions were studied. In additionto literacy skills, the assessment includedphonological skills, school attendance,cultural background, and self-esteem. Dyslexiain the sense of decoding problems related tophonological deficiencies was observed in 11%of the cases. Most of the inmates withliteracy difficulties had a background, frominfancy and onwards, characterized by severesocial and emotional problems, interfering withpositive experience of literacy and theliterate culture. However, these sub-optimalexperiences of the literate culture do notimply dyslexia. From this perspective, it isunlikely that dyslexia is a determining factorof delinquent behavior.  相似文献   
88.
Myriad approaches for handling missing data exist in the literature. However, few studies have investigated the tenability and utility of these approaches when used with intensive longitudinal data. In this study, we compare and illustrate two multiple imputation (MI) approaches for coping with missingness in fitting multivariate time-series models under different missing data mechanisms. They include a full MI approach, in which all dependent variables and covariates are imputed simultaneously, and a partial MI approach, in which missing covariates are imputed with MI, whereas missingness in the dependent variables is handled via full information maximum likelihood estimation. We found that under correctly specified models, partial MI produces the best overall estimation results. We discuss the strengths and limitations of the two MI approaches, and demonstrate their use with an empirical data set in which children’s influences on parental conflicts are modeled as covariates over the course of 15 days (Schermerhorn, Chow, & Cummings, 2010).  相似文献   
89.
School Leaving: A Longitudinal Perspective Including Neighborhood Effects   总被引:6,自引:0,他引:6  
Using 1970 and 1980 census data from 202 tracts in the Chicago metropolitan region, we examine whether neighborhoods influence the likelihood of high school graduation for a cohort of African-American children followed from 1966 to 1993. Neighborhood-level variables included percent living below poverty and percent in white-collar occupations. We test for the possible direct, indirect, and interactive effects of these neighborhood indicators on the likelihood of school dropout. Our examination found the advantage of living in a neighborhood characterized by a high percentage of residents who work in white-collar occupations. Male adolescents who lived in a middle-class neighborhood were more likely to graduate from high school, even with family background, early school performance, adolescent family supervision, and adolescent marijuana use controlled. These findings are consistent with findings from three other studies. However, living in a poverty census tract did not seem to influence the likelihood of high school graduation or school leaving over and above the impact of family and individual characteristics. There also were no neighborhood effects for females.  相似文献   
90.
The effect of intrauterine PCB exposure on visual recognition memory   总被引:22,自引:0,他引:22  
Adverse neonatal outcomes have been associated with intrauterine exposure to polychlorinated biphenyls (PCBs). In a follow-up study of exposed and nonexposed infants, 123 infants tested at birth were administered Fagan's test of visual recognition memory at 7 months. 2 measures of prenatal PCB exposure, cord serum PCB level and maternal report of contaminated fish consumption, both predicted less preference for a novel stimulus. Preference for novelty decreased in a dose-dependent fashion with increasing levels of prenatal PCB exposure. Postnatal exposure from nursing was not related to visual recognition memory. The relation between prenatal exposure and visual recognition was not mediated by the neonatal deficits, suggesting that intrauterine PCB exposure may have a delayed effect on central nervous system (CNS) functioning.  相似文献   
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