Research design and statistics in biomechanics and motor control

Biomechanics and motor control researchers measure how the body moves and interacts with its environment. The aim of this review paper is to consider some key issues in research methods in biomechanics and motor control. The review is organized into four sections: proposing, conducting, analysing and reporting research. In the first of these, we emphasize the importance of defining a worthy research question and of planning the study before its implementation to prevent later difficulties in the analysis and interpretation of data. In the second section, we cover selection of trial sizes and suggest that using three trials or more may be beneficial to provide more 'representative' and valid data. The third section on analysis of data concentrates on effect size statistics, qualitative and numerical trend analysis and cross-correlations. As sample sizes are often small, the use of effect size is recommended to support the results of statistical significance testing. In using cross-correlations, we recommend that scatterplots of one variable against the other, with the identified time lag included, be inspected to confirm that the linear relationship assumption underpinning this statistic is met and, if appropriate, that a linearity transformation be applied. Finally, we consider important information related to the issues above that should be included when reporting research. We recommend reporting checks or corrections for violations of underpinning assumptions, and the effect of these checks or corrections, to assist in advancing knowledge in biomechanics and motor control.     

Responsible action research for the pursuit of justice

The pursuit of justice has concerned human beings for centuries and, despite its importance, often remains outside the boundaries of our educational systems. This article reports on a study of an action research seminar for a group of teacher leaders in a position to instigate positive change within their educational context, and make their actions occasions for justice. In order to better understand the textual data generated by the teacher leaders, we devised an analytical lens that draws from modern rabbinical scholarship, eco-political (socio-political) studies, and existentialism. We found at this intersection that, despite the teacher leaders recognizing injustice, and at times protesting against it, their ability to act, formulate solutions, and conduct action research – and even their very concept of justice – was heavily influenced and constrained by the dominant political regime of the US educational system. An explanatory framework emerged that sheds light on the dynamic interplay among justice, politics, and beliefs, while also revealing the constraints to pursuing justice from within a leadership structure. We conclude that for action research to be a means for teachers and teacher leaders to begin to modify their practice so they are sensitive to the voices of the marginalized, to see their actions as opportunities for justice, and to provide collaborative experiences that help other teachers develop their ways of thinking, acting, and interacting in pursuit of justice, those who teach action research must be willing to do the very same.     

Developing the potential for sustainable improvement in underperforming schools: Capacity building in the socio-cultural dimension

This mixed-method study examines Arizona principals’ capacity-building skills and practices in Tier III schools aimed at developing potential for sustained improvements in student outcomes. Data sources included surveys (62 individuals) and semistructured interviews (29 individuals) of principals and staff (e.g. teachers, instructional coaches, assistant principals) who participated in grant-funded leadership training over an 18-month period. The theoretical framework consisted of leadership in the sociocultural dimension (Ylimaki et al. in Leadersh Policy Sch 11(2):168–193, 2012) and capacity building for sustainable improvement in high-capacity Schools (Mitchell and Sackney in Sustainable improvement: building learning communities that endure. Sense Publishers, Rotterdam, 2009). Findings indicated that: (1) schools were not at high-levels of capacity building; (2) those schools in process of building capacity for sustainable improvement demonstrate a directive leadership approach; (3) school development towards high capacity focused on micro-level processes (e.g., professional learning communities); and (4) little attention was given to leadership in the socio-cultural dimension. Implications of the study suggest future research test a leadership development model for Tier III schools that links capacity building leadership and student achievement. The next generation of educational leaders must also have the knowledge, skills, dispositions, and analytical tools to lead schools in both the accountability culture and the macro socio-cultural dimension.     

An exploration of mothers' attitudes towards their daughters' menarche

Menarche is a significant milestone for young women, representing an important juncture between girlhood and maturation. The limited literature that exists suggests that a mother's reaction to her daughter's first periods can shape her experiences and perceptions of menstruation which, in turn, may impact on her self-image and, consequently, sexual risk taking. However, very little is known about UK mothers' attitudes towards their daughters' menarche. This paper aims to add to the body of knowledge by applying a postmodern critique, a Derridian deconstructive analysis, to a discussion thread found on mumsnet.com – a UK parenting website. The thread is concerned with a mother's response to her daughter's menarche to which other mothers respond. The deconstruction revealed a number of meta-narratives and themes within the text: secrecy, sorrow, a lack of competency and knowledge, power, gender and motherhood. Unwittingly, the women appear to be socialising their daughters to comply with and perpetuate the menstrual taboo that they endured themselves, thus repeating the cycles of shame associated with menstruation. The findings of this critique suggest that menstrual education is an area that requires more attention, particularly in the context of perceived menstrual shame and its impact on sexual decision-making.