Child adaptational development in contexts of interparental conflict over time

This multi-method study sought to identify parameters of developmental change and stability of child reaction patterns to interparental conflict in the context of family relations in a sample of 223 6-year-old children and their parents followed over the course of one year. Consistent with the sensitization hypothesis, interparental withdrawal and hostility each consistently and uniquely predicted child distress reactions to conflict even after analytically controlling for parental warmth. Associations were found across multiple domains of child responding (i.e., overt negative affect, subjective negative affect, internal representations) and both concurrent and prospective, autoregressive analyses. Results of the autoregressive path analyses indicated moderate stability in each of the domains of conflict reactivity over the 1-year longitudinal period.     

‘Straitjacket’ or ‘springboard for sustainable learning’? The implications of formative assessment practices in vocational learning cultures

In contrast to theoretical and empirical insights from research into formative assessment in compulsory schooling, understanding the relationship between formative assessment, motivation and learning in vocational education has been a topic neglected by researchers. The Improving Formative Assessment project (IFA) addresses this gap, using a sociocultural approach to explore the relationship between formative assessment practices and ‘learning cultures’ in vocational education. This article explores the influence of learning cultures in vocational education on the practice of formative assessment and evaluates critically two closely related questions. Why do some learning cultures foster formative assessment that leads to instrumental learning while others develop deeper forms of learning? When is formative assessment a springboard for sustainable learning, and when does it remain an instrumental straitjacket?     

Contradictions of control: Lessons from exploring teachers' work in Botswana

Using the concept of teaching as a labour process, this paper explores the relationship between the work of teaching and the control of education by the state. Ethnographic data from Botswana is used to discuss emergent themes of teachers' certainties and uncertainties; staff divisions and cultures; accommodations and resistances to control; teachers as storekeepers of knowledge; and occupational rewards and addictions. The meaning and forms of ‘centralisation’ appear as important issues, and contradictions emerge in the exercise of control, with teachers able to recreate significant areas of professional and personal autonomy.     

Process Re-Design For Enhanced Human Performance Originally published in 1994, PIQ 7.3

Faced with sophisticated global competition, companies are busily reinventing“themselves. This offers an opportunity for performance technologists to re-think the value added component of their contribution to enhancing human performance. In this evaluation, the four values of speed, simplicity, stretch, and self-confidence assume a central role. Design, as in the past, is key, but design must be founded on the assumption that all human performance involves a process or combination of processes. Furthermore, processes are subject to variability of one kind or another, variability that is either predictable or random. It is argued that a process orientation, rather than a focus on inputs and outputs, offers performance technologists a more direct way of contributing to the realization of key business goals and more effectively focuses training and development on performance issues. Process re-design is a key strategy in the realization of these two goals.     

Whole blood pumping with a microthrottle pump

We have previously reported that microthrottle pumps (MTPs) display the capacity to pump solid phase suspensions such as polystyrene beads which prove challenging to most microfluidic pumps. In this paper we report employing a linear microthrottle pump (LMTP) to pump whole, undiluted, anticoagulated, human venous blood at 200 μl min(-1) with minimal erythrocyte lysis and no observed pump blockage. LMTPs are particularly well suited to particle suspension transport by virtue of their relatively unimpeded internal flow-path. Micropumping of whole blood represents a rigorous real-world test of cell suspension transport given blood's high cell content by volume and erythrocytes' relative fragility. A modification of the standard Drabkin method and its validation to spectrophotometrically quantify low levels of erythrocyte lysis by hemoglobin release is also reported. Erythrocyte lysis rates resulting from transport via LMTP are determined to be below one cell in 500 at a pumping rate of 102 μl min(-1).