Improving preservice teachers’ scientific argumentative writing through epistemic practices: a learning progression approach

Improving preservice teachers’ argumentative competence is a social and educational imperative. This study focuses on the contribution of a sequence of learning tasks, designed as epistemic practices and following a learning progression approach, to enhancing student teachers’ scientific argumentative writing. The participants were 47 preservice primary teachers who enrolled in a Developmental Psychology course, and one lecturer. Preservice teachers progressively acquired the vast majority of aspects involved in scientific argumentative writing. The most important difficulties experienced by the preservice teachers revolved around intertextuality and the creation of theses. Key conclusions on this teacher education experience are presented in the final section of the paper.     

Middle leadership roles in universities: Holy Grail or poisoned chalice

Middle leadership roles in higher education have been identified as important for institutional effectiveness yet fraught with tensions, and those in middle leadership roles often feel unprepared and unsupported. This study of the responsibilities, skills and competencies, and support required for heads of school in a New Zealand university, drew on a survey and interviews with heads and focus groups or interviews with a range of stakeholders. The research found that while heads found satisfaction in their role, they also faced challenges associated with people management, workload and impact on their research careers. There was widespread agreement among stakeholders about the capabilities needed for the role and an awareness of the barriers to effectiveness. Suggestions for making the role more appealing include reducing workload, providing learning and development programs, clarifying the balance of professional and personal competencies required, and encouraging the distribution of leadership.     

Maternal Responsiveness to Infants in Three Societies: The United States, France, and Japan

This study examines and compares prominent characteristics of maternal responsiveness to infant activity during home-based naturalistic interactions of mother-infant dyads in New York City, Paris, and Tokyo. Both culture-general and culture-specific patterns of responsiveness emerged. For example, in all 3 locales infants behaved similarly, mothers also behaved similarly with respect to a hierarchy of response types, and mothers and infants manifest both specificity and mutual appropriateness in their interactions: Mothers responded to infants' exploration of the environment with encouragement to the environment, to infants' vocalizing nondistress with imitation, and to infants' vocalizing distress with nurturance. Differences in maternal responsiveness among cultures occurred to infant looking rather than to infant vocalizing and in mothers' emphasizing dyadic versus extradyadic loci of interaction. Universals of maternal responsiveness, potential sources of cultural variation, and implications of similarities and differences in responsiveness for child development in different cultural contexts are discussed.     

Why schools should make condoms available to teenagers

The controversy surrounding sex education and condom availability programs in schools in New York City and throughout the US continues because parents worry that such programs encourage teenagers to engage in sexual behavior. But the reality is that more and more teenagers are engaging in sexual behavior anyway. The Carnegie Council on Adolescent Development found the 17% of girls and 29% of boys engaged in sexual intercourse by the time they were 16 years old. Many parents are ready to blame sex education and condom availability programs for these figures; these parents issue calls for "chastity education." Opponents of sex education also believe that these programs violate the rights of parents to education their children about moral behavior and religious values. But the truth is that these programs do not preclude the right of a parents to teach a child anything. They simply prevent the use of the public schools to impose religious beliefs on students. Those who argue that the mandate of schools is only to teach academic subjects forget that public high schools are the best place for sex education and condom availability programs because the schools are full of teenagers and of adults who are trained and willing to counsel them. Few educators would argue that schools should not teach values, and sex education and condom availability programs provide an excellent way to help teenagers understand not only human sexuality, reproduction, and the spread of disease but also social relationships, the development of cultural norms, and the role of responsible citizens. At the same time that we encourage sexual abstinence among young people, we must also teach about sexual responsibility. Sexual responsibility today means using a condom to prevent pregnancy and disease. If teenagers are embarrassed in their efforts to acquire condoms, pregnancy and diseases will be the result, not abstinence.     

The relationship between sexual abuse and substance abuse among psychiatrically hospitalized adolescents

A comparative study using matched samples was conducted to investigate the relationship between sexual abuse and substance abuse. The sample included 48 adolescent psychiatric inpatients who had been sexually abused (abuse group) and 48 psychiatric inpatients without a known history of such abuse (control group) matched by age, race, sex, and primary psychiatric diagnosis. Statistically significant differences emerged between the groups in several areas. Abuse group subjects indicated more regular use of cocaine and stimulants, greater frequencies of alcohol and drug use, and more reported drunkenness and times high on drugs than their control counterparts. Explanations of the association between substance abuse and sexual victimization are explored. Discussion suggests the possibility of earlier coping strategies being related to later chemical use patterns. Implications for service delivery are offered.     

Science and technology in Japan

The rapid rise of advanced technology in Japan is a major factor in the world economy, but one whose origins are not generally understood. Still less is known in the West of Japanese science, as distinct from science imported from other countries. The author of this article, who has had exceptional experience in Japan, argues that a proper understanding of Japanese science and technology, and of their likely development in the future, must be based as much on knowledge of their history as on knowledge of their present organisation.     

Effects of synchronous versus asynchronous push modes on performance and biomechanical parameters in elite wheelchair basketball

This study aimed to compare the effects of synchronous (SYN) vs asynchronous (ASY) modes of wheelchair propulsion in field sprint tests on performance and biomechanical parameters. Seven elite wheelchair basketball players performed two separate (SYN and ASY) straight-line 20-m sprints. ASY increased sprint time and decreased push frequency compared to SYN (p < 0.05). Peak velocity and total force for the mean of the last three pushes were higher in SYN. Rate of rise was higher in SYN for the first, second and third pushes (p < 0.05). No significant difference was found for peak power and mean work. SYN mode induces better performance (13% difference in speed). However, the increase in rate of rise, thus the expansion of the total force when gripping the hand rim, push frequency and total force in SYN modes seems to expand the risk of developing musculoskeletal disorders during manual wheelchair propulsion for upper limb joints than ASY.     

Individual and organizational inhibitors to the development of entrepreneurial competencies in universities

Nascent academic entrepreneurs need to acquire entrepreneurial competencies to create successful spin-off ventures. In this article, we examine difficulties in this pursuit prior to venture formation and offer a systematic classification of inhibitors. We confirm, combine, and extend two previously identified inhibiting mechanisms into a relational inhibitor category, classify additional structural and cultural-cognitive inhibitors, and highlight how these inhibitors exist both at the individual and the organizational level. We then advance theoretical understanding of the interrelated, multilevel functions of inhibitors on the development of entrepreneurial competencies, and offer policy insights on how universities can mitigate their effects.     

Does performance level affect initial ball flight kinematics in finger and wrist-spin cricket bowlers?

Spin bowling plays a fundamental role within the game of cricket yet little is known about the initial ball kinematics in elite and pathway spin bowlers or their relationship to performance. Therefore, the purpose of this study was to record three-dimensional ball kinematics in a large and truly high level cohort of elite and pathway finger-spin (FS) and wrist-spin (WS) bowlers, identifying potential performance measures that can be subsequently used in future research. A 22-camera Vicon motion analysis system captured retro-reflective markers placed on the seam (static) and ball (dynamic) to quantify ball kinematics in 36 FS (12 elite and 24 pathway) and 20 WS (eight elite and 12 pathway) bowlers. Results indicated that FS bowlers delivered the ball with an increased axis of rotation elevation, while wrist-spin bowlers placed greater amounts of revolutions on the ball. It also highlighted that ball release (BR) velocity, revolutions and velocity/revolution index scores for both groups and seam stability for FS bowlers, and seam azimuth angle and spin axis elevation angle for WS bowlers, were discriminators of playing level. As such these variables could be used as indicators of performance (i.e. performance measures) in future research.