The structure of imagery.

Children's drawings of objects about to be moved in space (anticipatory images) were studied in relation to their judgments about Euclidean spatial relations. Tasks assessing Euclidean geometric operations were administered to 102 girsl between the ages of 4 and 13 years. 5 operative levels resulted: (a) failure on all operations tasks, (b) success on conservation of length, (c) success on conservation and 1-dimensional measurement, (d) success on the latter 2 tasks plus measurement in 2 dimensions, and (e) success on the latter 3 tasks and coordination of internal and external reference frames. The same children performed on 6 imaginal tasks involving movements of objects. Results confirmed several theoretical expectations: (a) children who were unable to measure had difficulty imaging successive positions for 1-dimensional movement; (b) children who were unable to coordinate a point in space by reference to 2 axes were unable to draw states of movement correctly for 2-dimensional movement; (c) children's errors in drawing successive positions of moving objects were related to the structure of operations at the lower levels; and (d) the coordination of object positions over successive states was dependent on the ability to measure from an external frame. The results were interpreted as support for Piaget and Inhelder's theory of imagery development.     

Pseudo bond graphs for generalized compartmental models in engineering and physiology

True bond graphs, which use effort and flow variables whose product is power, can in principle be used to describe all types of physical systems. However, many system models do not use power variables and yet can be represented usefully as pseudo bond graphs. Pseudo bond graphs have been used particularly for open systems in which it is convenient to consider control volumes or compartments with boundaries across which mass can flow. In this paper, we show how the bond graph methods used for conductive and convective heat transfer can be generalized to account for diffusion, convection, and accumulation of a variety of physical quantities and how pseudo bond graphs can aid in constructing and representing such models. These models are known in mathematical biology as “compartmental models” and it is a main contribution of this paper to show that the same pseudo bond graphs apply to thermofluid and physiological dynamic models. The bond graphs build in some conservation principles automatically and yet have the flexibility to incorporate general multiport laws when necessary. Thus the pseudo bond graphs can exhibit system structure as do other network graphs and are very general in nature.     

SCHOOL PSYCHOLOGISTS’ FAMILY–SCHOOL PARTNERING EXPERIENCES WITH LATINOS

The purpose of this phenomenological study was to identify the beliefs, perceptions, and actions of school psychologists toward family–school partnering (FSP) with Latino families in the public school system. Existing research in this area is extremely limited; therefore, the present study has significant implications for pre‐ and in‐service training to achieve effective FSP with Latino families. Five school psychologists working in school districts with greater than 40% Latino student enrollment participated in this study. Five major themes emerged from data analysis: Attitudes toward FSP, Knowledge and Skills Needed, Expectations for Engagement, Perceived Barriers to FSP, and Engagement Activities. The results of this study will help researchers and educators develop an awareness of the challenges school psychologists face and the actions they take to enhance relationships with Latino families.     

Representation and conflict of interest among students on higher education governing boards

Student participation in higher education governance is commonplace in many countries around the globe. This participation can take many forms, but one prevalent form is through the inclusion of students as members of institutional governing boards, commonly called student trustees. This practice is not without critique with governance scholars often cautioning against student board membership. They cite the potential for student members to engage in representative behaviour, which may lead them to focus primarily on student issues or cast votes which may be in the best interest of themselves or their fellow students as the primary objection to student board members. This study of student trustees in the United States examines the extent to which these individuals engage in such behaviours, examining interactions between student board members and students at their institutions for signs of whether these oft states concerns have a basis in practice.     

Body Donation after Medically Assisted Death: An Emerging Consideration for Donor Programs

Around the world, the recent introduction of assisted death laws has meant that undertaking medical assistance in dying (MAID) is now an option for some persons wishing to end their life. Some of these people donate their bodies to medical science, and by doing so have created a new route from which donor programs can now receive bodies. Such donations have also illuminated a myriad of novel ethical questions. This article considers the emotive and controversial topic of MAID in relation to body donation, describing the experiences of McMaster University, Canada, where several MAID body donors have been received by the anatomical donor program. It provides background on the development and implementation of MAID in Canada, and describes the experience of staff and students at McMaster to MAID donations. It also explores the relevance of MAID to body donation programs, and discusses several of the ethical challenges facing body donation programs who may encounter MAID body donors. These include the appropriateness of accepting MAID donors, issues with informed consent, the effect of personal engagement with MAID donors, information sharing around MAID donations, governance issues, and negative historical parallels between MAID and euthanasia. Suggestions on how to manage MAID body donation focus on how issues affecting institutions, faculty, and students may be approached utilizing appropriate transparency and communication, some of which may facilitate student professional development around the topic of MAID. It is also suggested that the development of ethically appropriate guidelines on MAID body donations may positively guide the anatomical community.     

Sharing designer and user perspectives of web site evaluation: a cross-campus collaborative learning experience

In this paper we present an online, collaborative process that facilitates usability evaluation of web sites. The online workspace consists of simple and effective proformas and computer–mediated discussion space to support usability evaluation. The system was designed and used by staff and students at two universities. Students, working in small teams, at each university, developed web sites and then evaluated the usability of web sites developed at the other university, using the results to improve their own sites. Our project evaluations show that the process provides valuable feedback on web site usability and provides students with the experience of usability evaluation from two important perspectives: those of a user and of a developer. Further, students develop important generic skills: the ability to participate in and critique computer supported cooperative work environments.     

Men in limbo: former students with special educational needs caught between economic independence and social security dependence

Individuals in their mid-thirties are expected to be employed and economically independent. However, people with disabilities and health problems – for example, former students with special educational needs (SEN) – may have problems in this domain of adult life. In Norway, individuals with SEN frequently rely on social security and support measures from the Norwegian Labour and Welfare Administration (NAV). This article is based on the narrative analysis of life course trajectories of seven young adult males over a period of 17 years – from their enrolment in upper secondary school with special needs teaching whilst in their teens to their participation in various NAV programmes whilst in their mid-thirties. The life course approach, with an emphasis on transitions and trajectories, has been used as the theoretical framework for analysing the presented data. The hope is that, taken together, these seven stories provide a deeper insight than one individual story could offer. We find that both social structures and the earlier life course affect one’s opportunities for joining the labour market.     

White Counselors' Conceptualization of Privilege and Oppression: Implications for Counselor Training

The authors in this qualitative study explored how White counselors define and experience privilege and oppression. Specifically, 2 research questions were addressed in semistructured interviews with 8 counselors: How do White counselors conceptualize privilege and oppression as separate but related constructs= and What experiences do White counselors generally describe concerning privilege and oppression? The authors present a research model that represents the factors that contribute to changes in the conceptualization and awareness of privilege and oppression and the way that these changes come about. Implications for counselor training are discussed.     

Impact of Changing Difficulty on Inferences From the National Assessment of Educational Progress

The U.S. Department of Education measures student achievement through the National Assessment of Educational Progress (NAEP). NAEP estimates of population proficiency quantiles are based on a Bayesian multiple-imputation procedure. This article shows (a) that the resulting estimates depend directly on the mix of item difficulties on the test, and (b) the difficulty of items on the NAEP mathematics exam has increased over time. Does the increasing difficulty of the exam lead to observable changes in student performance over time? This study compared the simulated performance of 1990 examinees on the easier 1990 exam and the more difficult 1996 exam. No significant differences were found. While our results instill confidence that these changes have not impacted the NAEP trend line, our findings are both data-specific and limited in scope, and NAEP should carefully evaluate future adjustments to the test in this manner.