The Roles of the Primary Head in Voluntary Aided and County Schools: A Personal View

In Zimbabwe, there have been some debates on democratisation and decentralisation, which led to the development of policies meant to increase teacher participation in decision-making in schools. However, despite these developments, teacher participation in decision-making in Zimbabwean schools is regarded as insignificant. Teachers work closely with students and have firsthand knowledge of their strengths and weaknesses – they are therefore the most valuable people to develop and implement policies. This study investigated the extent of teacher participation in decision-making in Zimbabwean schools. The study adopted a qualitative/interpretive research methodology and used the case study research design as the operational framework for data gathering. Data was collected through interviews, documentary analysis and observation of two staff meetings per school from five secondary schools in Gweru Education District in Zimbabwe. The population sample comprised five secondary school heads and 20 secondary school teachers. The study established that teachers were insignificantly involved in decision-making despite their eagerness to be involved. Some duties are given to senior teachers or committees even when teachers feel that they should be directly involved. There are times when school heads make unilateral decisions and impose them on teachers for implementation. The study recommends that heads of schools should give their teachers room to come up with ideas and look at all contributions objectively.     

Physical Inactivity,Obesity, and Type 2 Diabetes: An Evolutionary Perspective

Physical inactivity (and unhealthy nutrition) has distorted body composition and, in turn, reordered the proportions of myocyte and adipocyte insulin receptors. Insulin acting on adipocyte receptors produces less glucose uptake than does comparable interaction with myocyte receptors. Accordingly, in individuals with disproportionate muscle/fat composition, any given glucose load requires greater-than-normal pancreatic insulin secretion for adequate disposal. This hyperinsulinemia then becomes the leading cause of type 2 diabetes (T2DM) as insulin-sensitive tissues become desensitized. Because T2DM is rooted in potentially reversible lifestyle factors, rather than focusing on the intricacies of glucoregulation at the molecular level and on testing new drugs to control blood sugar, this article calls for a new prevention and treatment paradigm, in which exercise and weight control are essential and for which an inexpensive and acceptably accurate measure of body muscle and fat proportions is needed.     

Positive behavioral contrast,autoshaping, and omission responding in the goldfish (Carassius auratus)

Two experiments with goldfish were performed to investigate the role of stimulus-reinforcer vs. response-reinforcer relationships in omission training and the role of stimulus localizability in a positive behavioral contrast paradigm. The directed behavior of fish, like that of pigeons and rats in other studies, was greatly influenced by positive stimulus-reinforcer correlations, as evidenced by maintained contacts of a signal for food, even though such responses terminated the signal and cancelled reinforcement delivery. Goldfish exhibited positive behavioral contrast when the signals for reinforcement and nonreinforcement were displayed directly on the response key, but no contrast was observed when variations in a diffuse houselight stimulus were used as signals for reinforcement or nonreinforcement. Analysis of sequential-trial data yielded effects analogous to Pavlovian positive and negative induction. Theoretical and methodological problems were briefly considered.     

Sex and the Quiet Schoolgirl

The article is based on a year's ethnographic work at a West Midlands comprehensive school, which is described. The usual genderising pattern of subject choice and behaviour are identified, and used as the basis of an analysis of the differences, real and imagined, between boys and girls and their expectations of secondary schooling.

Having identified quietness as one of the distinguishing characteristics of girls at Cator Park school, I relate this to their own assessment of how they accommodate to the demands of school. This highly selective adaptation is suggested as one reason why the boys are puzzled by the behaviour of girls in school, and it is suggested that it allows the girls to retain their private identity outside school. The conclusion is that quietness is a successful adaptation to the situation of girls in school, and should not be viewed as a weakness.