Top-down and bottom-up approaches to motor skill assessment of children : are child-report and parent-report perceptions predictive of children's performance-based assessment results?

Background/ Aim: Therapists use different types of tests, scales, and instruments to assess children's motor skills, including those classified as being top-down and bottom-up. The aim of the study was to investigate the ability of measures of children's motor skill performance from the perspectives of children and parents (a type of top-down assessment) to predict children's performance-based motor ability test results (a type of bottom-up assessment).
Methods: A convenience sample of 38 children and parents was recruited from Victoria, Australia. Motor skill performance was evaluated from a top-down perspective using the Physical Self-Description Questionnaire (PSDQ) and the Movement Assessment Battery for Children – Second Edition (MABC-2) Checklist to measure children's and parents' perspectives respectively. Motor skill performance was also evaluated from a bottom-up approach using the Bruininks-Oseretsky Test of Motor Proficiency – Second Edition (BOT-2). Data were analyzed using multiple linear regression analysis to determine whether the PSDQ or MABC-2 Checklist was predictive of the children's BOT-2 performance results.
Results: Two predictive relationships were identified based on parents' perspectives, where the total score of the MABC-2 Checklist was found to be a significant predictor of the BOT-2 Manual Coordination motor composite score, accounting for 8.35% of its variance, and the BOT-2 Strength and Agility motor composite score, accounting for 11.6% of its variance. No predictive relationships were identified between the children's self-report PSDQ perspectives and the BOT-2 performance scores.
Conclusions: Therapists are encouraged to utilize a combination of top-down and bottom-up approaches and purposefully to seek parents' and children's perspectives when evaluating children's motor skill performance.

Invader impact clarifies the roles of top-down and bottom-up effects on tropical snake populations

Disentangling the effects of prey limitation (bottom-up) and predation (top-down) processes on natural populations is difficult, but the perturbations introduced by an invasive species can provide pseudo-experimental evidence on this issue.

Towards a cohesive, holistic view of top predation: a definition, synthesis and perspective

Research on the ecology of top predators - upper trophic level consumers that are relatively free from predation once they reach adult size - has provided regular contributions to general ecology and is a rapidly expanding and increasingly experimental, multidisciplinary and technological endeavour. Yet, an exponentially expanding literature coupled with rapid disintegration into specialized, disconnected subfields for study (e.g. vertebrate predators versus invertebrate predators, community ecology versus biological control etc.) increasingly means that we are losing a coherent, integrated understating of the role and importance of these species in ecosystems. This process of canalization is likely to hinder sharing of scientific discovery and continued progress, especially as there is a growing need to understand the generality of the top-down forcing, as demonstrated for some members of this group. Here, we propose ways to facilitate synthesis by promoting changes in mentality and awareness among specialists through increased debate and collaboration, conceptual reviews and a series of exemplary case studies. The strategy will rely on the collective contribution by all scientists in the field and will strive to consolidate and formalise top-order predation as a holistic, cohesive, cross-taxonomical field of research studying the ecology, evolution and behaviour of apex predators and their capability to exert top-down forcing on lower trophic levels. © 2014 The Authors.

The role of management consultation, support, and coping on nurses` health during the stress of restructuring

This study examined the impact of hospital restructuring moves on a sample of Australian nurses' health. The role of organizational support, assessed via levels of consultation with staff, social support, and nurses coping were examined as further contributors or mediators of the relationship between the impact of restructuring and nurses' health. Data from 201 hospital nurses indicated that the factors in the model explained 41% of the variance in nurses' health. “Top-down” communication style by management contributed negatively to nurses' health and increased their perceptions of the impact of restructuring. Support from peers, supervisors, and family together with seeing the demands of impact of restructuring as a challenge, contributed positively to nurses' health and reduced the level of avoidance strategies used. The implications of these findings are discussed.

Promoting innovation in university teaching against the tide of centralised control and institutional risk avoidance

Over the last m'o decades, university systems world-wide have been subject to government initiated, top-down restructures in the name of greater effectiveness, accountability and quality. Within this timefrome, government interest in university teaching has increased, and innovation and responsiveness in teaching have been increasingly prioritised by both government and university policies. AcademiC interest in the teaching has also increased. and much research and discussion has focused on defining teaching as a source of scholarship and expounding its role in the promotion of innovation, and in the recognition and rewarding of teaching work. In this paper, I draw on a study of academics' views, which I have reported at previous AARE conferences and elsewhere, to raise questions about recent and ongoing developments in the work environment of university educators.l raise the possibility that systems and processes whose express purpose is to facilitate and support university educators' efforts to improve teaching are, in fact. inhibiting innovative practice by institutionalising an aversion to risk that is anathema to innovation.

Personal pedagogies and online teaching

This paper describes the rationale for and approach to research that is investigating the context, use and effects of a new teaching and learning online environment on the pedagogical practices of academics in a Faculty of Education in a traditional university setting. The use of online communication software is not new to the university. There is a history of use of a different suite of online communication software, but a new set of ‘tools’ was imposed in a top down model. Associated with this imposition was a requirement that all units in all courses make use of this software at least at a most basic level.

The academic acclimatisation difficulties of international students of the built environment

Teaching models common to Australasia can be antithetical to those of its Asian neighbours. Australasian andragogy is a bottom-up student-centred mode of knowledge transmission promoting extroverted learning styles, whilst in Asia andragogy is commonly a top-down teacher centred model promoting introspective learning. Yet these teaching styles are in opposition to the cultural-systems attributed to Asia and the West. Such socio-cultural differences are recognised in this research as contributing to the difficulties international Built Environment undergraduates experience when asked to learn in multi-disciplinary collaborative teams. This paper presents the initial stages of a study currently running as a reflexive research program aimed at resolving these learning difficulties. The primary aim of this program is to inform a new culturally inclusive andragogy for design teaching. The outcome of the research questions are addressed through a triangulated analysis including: the formative appraisal of student satisfaction through questionnaires; the summative evaluation of student achievement through the analysis of grades and the assessment of knowledge and skills gained through the measure of student design projects; and illuminative evaluation through focus group discussions and the observation of tutorials.

The academic acclimatisation difficulties of international students of the built environment

Teaching models common to Australasia can be antithetical to those of its Asian neighbours. Australasian andragogy is a bottom-up student-centred mode of knowledge transmission promoting extroverted learning styles, whilst in Asia andragogy is commonly a top-down teachercentred model promoting introspective learning. Yet these teaching styles are in opposition to the cultural-systems attributed to Asia and the West. Such socio-cultural differences are recognised in this research as contributing to the difficulties international Built Environment undergraduates experience when asked to learn in multi-disciplinary collaborative teams. This paper presents the initial stages of a study currently running as a reflexive research program aimed at resolving these learning difficulties. The primary aim of this program is to inform a new culturally inclusive andragogy for design teaching. The outcome of the research questions are addressed through a triangulated analysis including: the formative appraisal of student satisfaction through questionnaires; the summative evaluation of student achievement through the analysis of grades and the assessment of knowledge and skills gained through the measure of student design projects; and illuminative evaluation through focus group discussions and the observation of tutorials.

Thirty years into teaching: professional development, exhaustion and rejuvenation

Female primary school teachers are usually absent from debates about literacy theory and practice, teachers’ professional development, significant policy changes and school reform. Typically they are positioned as the silent workers who passively translate the latest and of course best theory into practice, whatever that might be and despite what years of experience might tell them. Their accumulated knowledges and critical analysis, developed across careers, remain an untapped resource for the profession. In this paper five literacy educators, three primary school teachers and two university educators, all of whom have been teaching around thirty years, reflect on what constitutes professional development. The teachers examine their experiences of professional development in their particular school contexts – the problems with top-down, mandated professional development which has a managerial rather than educative function, the frustrations of trying to implement the experts’ ideas without the resources, and the effects of devolved school management on teachers’ work and learning. In contrast, they also explore their positive experiences of professional learning through being positioned as teacher researchers in a network of early and later career teachers engaged in a three-year research project investigating unequal literacy outcomes.

Bayesian classification of catchments using spatial data: a first step to improved modelling of catchment effects on stream ecological condition

A major challenge facing freshwater ecologists and managers is the development of models that link stream ecological condition to catchment scale effects, such as land use. Previous attempts to make such models have followed two general approaches. The bottom-up approach employs mechanistic models, which can quickly become too complex to be useful. The top-down approach employs empirical models derived from large data sets, and has often suffered from large amounts of unexplained variation in stream condition.

We believe that the lack of success of both modelling approaches may be at least partly explained by scientists considering too wide a breadth of catchment type. Thus, we believe that by stratifying large sets of catchments into groups of similar types prior to modelling, both types of models may be improved. This paper describes preliminary work using a Bayesian classification software package, ‘Autoclass’ (Cheeseman and Stutz 1996) to create classes of catchments within the Murray Darling Basin based on physiographic data.

Autoclass uses a model-based classification method that employs finite mixture modelling and trades off model fit versus complexity, leading to a parsimonious solution. The software provides information on the posterior probability that the classification is ‘correct’ and also probabilities for alternative classifications. The importance of each attribute in defining the individual classes is calculated and presented, assisting description of the classes. Each case is ‘assigned’ to a class based on membership probability, but the probability of membership of other classes is also provided. This feature deals very well with cases that do not fit neatly into a larger class. Lastly, Autoclass requires the user to specify the measurement error of continuous variables.

Catchments were derived from the Australian digital elevation model. Physiographic data werederived from national spatial data sets. There was very little information on measurement errors for the spatial data, and so a conservative error of 5% of data range was adopted for all continuous attributes. The incorporation of uncertainty into spatial data sets remains a research challenge.

The results of the classification were very encouraging. The software found nine classes of catchments in the Murray Darling Basin. The classes grouped together geographically, and followed altitude and latitude gradients, despite the fact that these variables were not included in the classification. Descriptions of the classes reveal very different physiographic environments, ranging from dry and flat catchments (i.e. lowlands), through to wet and hilly catchments (i.e. mountainous areas). Rainfall and slope were two important discriminators between classes. These two attributes, in particular, will affect the ways in which the stream interacts with the catchment, and can thus be expected to modify the effects of land use change on ecological condition. Thus, realistic models of the effects of land use change on streams would differ between the different types of catchments, and sound management practices will differ.

A small number of catchments were assigned to their primary class with relatively low probability. These catchments lie on the boundaries of groups of catchments, with the second most likely class being an adjacent group. The locations of these ‘uncertain’ catchments show that the Bayesian classification dealt well with cases that do not fit neatly into larger classes.

Although the results are intuitive, we cannot yet assess whether the classifications described in this paper would assist the modelling of catchment scale effects on stream ecological condition. It is most likely that catchment classification and modelling will be an iterative process, where the needs of the model are used to guide classification, and the results of classifications used to suggest further refinements to models.

Reflexive and critical views of leadership performance in corporate accomplishment : framework and illustration

Purpose – This paper intends to shed some light on the relationship between leadership performance and corporate accomplishment through the aid of complexity sciences. The objective is to describe leadership performance in corporate accomplishment using different teleological approaches.

Design/methodology/approach – The paper discusses the underlying criteria of the relationship between leadership performance and corporate accomplishment. Case illustration and narrative analogy are also provided.

Findings – The authors believe that the discussion highlights a potential downside of leadership performance in corporate accomplishment and its precision rarely highlighted in practice and literature.

Research limitations/implications – There is a reigning assumption in management practice that is based on the belief that a top-down approach of leadership performance in management and business practices is superior to the bottom-up approach. It proffers the assumed importance of strategic management issues, but neglects the knowledge, experience, competence and awareness inherent among employees at tactical and operational levels of business practices. It also proffers a mechanical view of employee performance and ignores the worth of the generation of ideas from subordinates in management and business practices that contribute to corporate achievements. Furthermore, it neglects the fact that it is not possible to know the future nor it is predictable.

Practical implications – The paper contends that the importance of top management tends to be inflated in respect to corporate achievements in the management/leadership literature. It also contends that it should be questioned as to whether the top management of corporations are largely responsible for the corporate results on which they attempt to justify their salaries and other benefits. Furthermore, the paper contends that it also should be questioned as to what extent corporate accomplishment may be derived from the performance of the top management in organizations.

Originality/value – The paper strives to contribute to the ongoing discussion of leadership performance in corporate accomplishment in various ways. The principal contributions are: a set of teleological sub-processes of leadership performance and a case illustration and narrative analogies of teleological leadership performance patterns, in respect to corporate accomplishment in management and business practices. These contributions provide theoretical and managerial ideas and insights to anticipate and avoid deficient or erroneous grounds of leadership performance evaluation in corporate accomplishment.

Corporate governance, board responsibilities and financial performance : the National Bank of Australia

This paper examines board responsibilities and accountability by management and Board of Directors in relation to the National Australia Bank's (NABs) performance. The NAB, an international financial service provider within the top thirty most profitable banks in the world, is compared with the Australian major banks. The evidence suggests that NABs poor performance was consistent with a lack of accountability, poor corporate governance and board dysfunction associated with fraudulent currency trading and the subsequent AUD360 million foreign currency losses. The NAB's performance is investigated by utilising accounting-based measures of profitability and cost efficiency as proxies for performance. Following the foreign currency trading losses in 2004 the NAB under-performed the other major Australian banks in terms of profits, cost to income ratio and growth in assets. In terms of profitability and cost efficiency NAB had the lowest ROE and ROA with a 19.7% fall in net profit and the highest cost to income ratio of 5 7.4% of any of the five largest banks. This case study provides an Australian example of poor corporate governance and suggests that financial institutions and regulators can learn from the NAB's experience. Failure to have top-down accountability can have significant impact on over-all performance, profitability and reputation. In particular, it suggests that management and Boards need to review their risk management procedures and regulators need to be more pro-active in their prudential oversight of financial institutions.