浅析心理统计学教学设计中的统计意识

本文从教学设计的视角对下列两方面进行了理性的分析：(1)心理实验设计与心理统计课程的教学应逐步整合起来;(2)由于学科的特殊性,必须对统计再认识。     

Math Talk and Student Strategy Trajectories: The Case of Two First Grade Classrooms

This study investigated different math-talk facilitations, and conceptualized the teachers' talk moves for productive student mathematics discussions. Our findings suggest that students' strategy development is supported by talk moves coordinating a wide range of student strategies, representations and discussions that are at a process-level and maintain student ownership of ideas, and transitional strategies that connect students' beginning ideas with target strategies.     

Experiences of the health care delivery system in a rural South African setting

This exploratory study aimed to examine health care provider work-related experiences in a rural South African context. Participants were a convenient sample of 12 medical practitioners (private sector = 55%). The practitioners responded to an open-ended question on their health care delivery-related experiences. Thematic analysis of the data revealed that the medical officers experienced both care provider fatigue and satisfaction from their work roles. Experiences of care provider fatigue were characterised by stress, anxiety, hopelessness, depression, burnout, frustration, and anger. Care provider satisfaction was associated with happiness, ability to cope, security, conscience, and commitment. Job retention and satisfaction of the health care providers were dependent on material and manpower resourcing of health services.     

自然分娩与剖宫产的比较研究

剖宫产不是一种分娩方式,而是解决难产的手段。日益增高的剖宫产率成为人们关注的热点话题,自然分娩和剖宫产对母婴的健康和卫生资源的影响,有很多的研究和争议,对于没有医学指征要求剖宫产目前倾向于在知情同意的情况下尊重患者的自主权和选择权,但控制剖宫产率在一个理性的范围之内,是一个系统工程,值得全社会的关注。     

Historical Inquiry to Challenge the Narrative of Racial Progress

This article explores how a curricular intervention that merges antiessentialist historical content and historical inquiry plays a role in how students complicate the narrative of racial progress. The 3-day curricular intervention centers on Mendez v. Westminster, a case about 1940s Mexican American school segregation. The content and historical inquiry activities explore how (a) Mexican Americans claimed legal Whiteness to gain access to better schools and (b) how Mendez upheld race and language-based segregation. This article outlines how students engage in 4 levels of historical analysis: evidenceless claims, emerging complexity, relational analysis, and multidimensionality. In each type of analysis, students use the antiessentialist historical content to complicate the narrative of racial progress. They highlight, to different degrees, how racial discriminatory policies adapt to continue upholding discrimination. With the antiessentialist historical content in place, the narrative of racial progress functioned as a template, not to emulate but, rather, as a point of comparison. It encouraged students to engage in a complex analysis where they considered how Mendez was an incomplete victory. This research provides insight into levels of analysis that up to now have mostly been theoretical. The larger lesson here, as it applies to how educators teach history, is that (a) the experiences of people of color cannot be essentialized, (b) inquiry can be a useful tool in encouraging historical reasoning that considers such racial/ethnic nuance, and (c) collective memory might be leveraged to encourage students to develop such relational analysis.     

Overcoming cognitive obstacles in learning fractions: Equal‐partitioning and equal‐whole1

Abstract: The present study was designed to test the hypothesis that acquisition of the concepts of equal‐partitioning and equal‐whole, which constitute implicit knowledge in fractions, promotes understanding of fractions. To test the hypothesis an experimental program based on both the equal‐partitioning and equal‐whole was developed for three third‐grade classrooms in a Japanese elementary school. As a control, conventional teaching based on a Japanese textbook was provided in two third‐grade classrooms. The present study tested the hypothesis that students given such an intervention program would understand order and magnitude as central characteristics of fractions better than those who had been instructed using a traditional textbook. Students in the experimental group showed significantly better understanding of the equal‐partitioning of fractions and the representation of the sizes of fractions than did those in the textbook group. There were, moreover, no differences between the experimental and textbook groups in the performance of routine tasks frequently found in the textbook. These results are discussed in view of the important instructional aims of having students understand fractions.     

Interaction of procedural factors in human performance on yoked schedules

The differential effects of reinforcement contingencies and contextual variables on human performance were investigated in two experiments. In Experiment 1, adult human subjects operated a joystick in a video game in which the destruction of targets was arranged according to a yoked variable-ratio variable-interval schedule of reinforcement. Three variables were examined across 12 conditions: verbal instructions, shaping, and the use of a consummatory response following reinforcement (i.e., depositing a coin into a bank). Behavior was most responsive to the reinforcement contingencies when the consummatory response was available, responding was established by shaping, and subjects received minimal verbal instructions about their task. The responsiveness of variable-interval subjects' behavior varied more than that of variable-ratio subjects when these contextual factors were altered. Experiment 2 examined resistance to instructional control under the same yoked-schedules design. Conditions varied in terms of the validity of instructions. Performance on variable-ratio schedules was more resistant to instructional control than that on variable-interval schedules.     

Evaluation of an awareness enhancement device for the treatment of thumb sucking in children

An evaluation of the awareness enhancement device (AED) described by Rapp, Miltenberger, and Long (1998) was conducted with 2 children who engaged in thumb sucking past the age at which it was developmentally appropriate. The AED effectively suppressed thumb sucking for both children. Future research evaluating the AED is discussed.     

An observational study on the risk behaviors of electric bicycle riders performing meal delivery at urban intersections in China

Along with the increase of online catering, the number of accidents involved meal delivery riders increases dramatically in China, and their riding behavior might contribute to fatal accidents. We conducted a field observation study to investigate the risk behavior characteristics of meal delivery couriers riding electric bicycles at urban intersections in China. We selected 4 typical signalized urban intersections in Beijing, and video recorded traffic behaviors of meal delivery riders for eight hours. A total of 1891 couriers crossing intersections on electric bicycles were observed, categorized, and analyzed. The results showed that red-light-running and riding-on-the-motor-lane were the most frequent risky traffic behaviors. The ratios of risk behaviors from delivery couriers were almost all significantly higher than those of normal riders (p < 0.05). There was no significant difference in these risk behaviors for riders across different platforms. The findings provide valuable insights for understanding couriers’ risk behaviors at intersections and make useful suggestions for improving traffic safety.     

Ecologies of care: addressing the needs of immigrant origin children and youth

ABSTRACT

Immigrant origin children and youth are now, and will continue to be, a diverse and demographically important segment of all post-industrial nations’ populations. In order to realize their potential, receiving contexts will need to find effective ways to integrate them into the fabric of their society. Using an ethic of care approach, we must begin by taking a comprehensive perspective on integration, which incorporates both a risk and resilience framework and an ecological perspective. A number of practices have emerged that have promise for positive implications for the schooling performance and educational integration of immigrant students These practices include 1 – short-term newcomer programs; 2 – specialized services for Students with Interrupted Formal Education; 3 – sustained services focused on new language development; 4 – services focused on heritage language development; 5 – providing explicit college pathway knowledge; 6 – summer and after-school academic enrichment programs; 7 – facilitating parental involvement (including translation and interpretation services); and 8 – advisory groups, after-school academic supports, mentoring and health services, and postsecondary supports. Providing the kinds of ecologies of care outlined here will go a long way toward helping these children and youth thrive and become the kinds of contributing members to their new society that will serve our collective future well.