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Creating and sustaining a positive school climate is not done in isolation but requires continuous ongoing work by several people within the school, and one of the most important actors are the teachers. In order to fulfil this very important task, the teachers need to collaborate with colleagues at school in an organized manner. In this study, we aim to explore and analyse teachers' perspectives on how their teacher team might be linked to their school climate work, and what team characteristics facilitate their work to create and maintain a positive and supportive climate within their school. To understand teachers' comprehension of their team, we applied a social psychology framework, using social interdependence theory and the concept of psychological safety. Data were collected by means of 14 semi-structured focus group interviews with 73 teachers from two compulsory schools in southeast Sweden. The findings revealed that teachers perceived the team as the most significant support structure when it comes to school climate work. According to them, the team was associated with shared responsibility, support and help, as well as safety and an open climate. By elucidating teachers' insider perspectives regarding their working conditions aligned to their work with school climate, we conclude that well-functioning teacher teams are experienced as a safe place to work on creating and maintaining a positive school climate.

In this paper, we draw on the concepts of figurations, capital, and hegemonic masculinity to analyse a bullying relation involving two fifth-grade boys at a Swedish comprehensive school. The findings are based on ethnographic fieldwork, which included participant observations and group interviews with eight teachers and fourteen students (seven girls and seven boys) from the same class. Our findings demonstrate the complexity of the relation between the boys and suggest that rather than constituting a straight-forward bullying "situation" involving a problematically aggressive 'bully' targeting a less powerful 'victim', it is part of a more complex "figuration" involving interdependent social relations that are tenuously balanced in terms of power dynamics and where the boys position themselves and are positioned in relation to the long-term symbolic norms of status dominant within their specific school field.

While the efforts of teachers are crucial for preventing and stopping degrading treatment, harassment, and bullying in schools, research has found that teachers' understandings of such terms may vary significantly. In this qualitative study, we take a social-ecological perspective to investigate Swedish schoolteachers' understandings of the terms degrading treatment, harassment, and bullying. The study is based on ethnographic research, which included participant observations and interviews conducted at three schools. The findings demonstrate not only the ways in which teachers blurred the conceptual boundaries between degrading treatment, harassment, and bullying, but also how such blurring was influenced by factors within the microsystem, mesosystem, exosystem, macrosystem, and chronosystem, and how the juridification of degrading treatment and harassment encouraged teachers to construct hierarchies of what they perceived to be more or less serious incidents.

Teachers have a major impact on students' social cognition and behaviors, and previous research has found that students who have positive relationships with their teachers tend to be less bullied by their peers. However, this line of research is limited in that it has been (a) Dominated by cross-sectional studies and (b) Treated bullying victimization as a global construct without differentiating among its different forms (i.e., verbal, physical, and relational). The links might be reciprocal but further studies are needed to investigate the directionality. Therefore, this study aimed to examine the longitudinal associations between student-teacher relationship quality and two forms of bullying victimization, namely verbal and relational victimization. Three waves of data from 1885 Swedish fourth- through sixth-grade students were analyzed with cross-lagged panel models. The findings showed that the student-teacher relationship quality predicted and was predicted by verbal and relational victimization. Our findings thus underscore the importance of striving for caring, warm, supportive, and respectful student-teacher relationships as a component of schools' prevention efforts.

Platelets are the terminal progeny of megakaryocytes, primarily produced in the bone marrow, and play critical roles in blood homeostasis, clotting, and wound healing. Traditionally, megakaryocytes and platelets are thought to arise from multipotent hematopoietic stem cells (HSCs) via multiple discrete progenitor populations with successive, lineage-restricting differentiation steps. However, this view has recently been challenged by studies suggesting that (1) some HSC clones are biased and/or restricted to the platelet lineage, (2) not all platelet generation follows the “canonical” megakaryocytic differentiation path of hematopoiesis, and (3) platelet output is the default program of steady-state hematopoiesis. Here, we specifically investigate the evidence that in vivo lineage tracing studies provide for the route(s) of platelet generation and investigate the involvement of various intermediate progenitor cell populations. We further identify the challenges that need to be overcome that are required to determine the presence, role, and kinetics of these possible alternate pathways.