This study is a systematic literature review on the role of models and representations in the teaching, learning and understanding of the atom and atomic concepts. The aim of the study is to investigate the role of different visual representations, what models and representations are used in the science classroom, how learners interpret different external representations of the atom, what mental models students construct, and how the representations can be used and designed for meaningful learning and teaching of the atom and atomic concepts.   In this systematic literature review, a combination of different databases was used to search for literature, namely ERIC, Scopus and Google Scholar. Some limiters were used to narrow down the returned results: the articles should be peer-reviewed and be published 1990-01-01 or later. Ten of the returned articles were included for individual analysis in the study.   The results of the study show that students often find concepts of atomic structure difficult and confusing. The abstract microscopic world of atoms cannot be seen with the naked eye, and models are therefore necessary and crucial educational tools for teaching atomic concepts in school. However, when using a model, it is important for the teacher to explain the rules of the model, and the advantages and limitations of the representation must be discussed. Analysis of the included articles revealed three types of representations used to represent atomic phenomena: two-dimensional static diagrams or pictures (e.g. a picture of the atom), three-dimensional videos or simulations (e.g. virtual reality simulations), and visual analogies (e.g. the Bohr planetary model of the atom). The use of simulations and interactive learning environments seem to have a positive effect on students’ learning. One of the studies, described in the articles included for analysis, showed that students appreciated the use of virtual reality simulations, since it made abstract concepts easier to understand when they could be visualized.

This thesis reports a research project that aims to improve the teaching and learning of introductory programming from a pedagogical and psychological viewpoint. Towards this aim, seven principles for designing educational programming tools for novices were identified by reviewing literature regarding novices’ difficulties and using a theoretical framework defined by the psychological theories of Constructivism and Cognitive Load Theory. This set of design principles was not only theoretically identified, but its pedagogical impact was also empirically tested. For this reason, Koios, a new programming tool, was designed and developed as a manifestation of the combined set of principles. Empirical studies were conducted by a way of a quasi-experimental design in two different Greek secondary-education institutions. The independent variable was compliance with the set of the seven principles. Students’ level of programming skills (procedural knowledge) was the dependent variable, while the quality of their mental models in the domain of introductory programming (declarative knowledge) was the potential mediator. The effect of compliance with the set of principles on students’ programming skills and mental-model quality was explored via Koios’ evaluation. Declarative- and procedural-knowledge measurements, as well as a practical test, were used to collect data, which were analysed using ANOVA and hierarchical multiple regression. The major conclusions drawn from this study are:(a) compliance with the set of design principles does not affect the development of novices’ procedural and declarative programming knowledge, (b) a programming tool that highly complies with this set facilitates novices in the application of their procedural programming knowledge during program creation and (c) programming tools, declarative and procedural knowledge are independent components in learning to program. However, it was also concluded that the two knowledge types and a programming tool that highly complies with the set contribute significantly to novices’ programming performance. This study contributes to knowledge by theoretically identifying and empirically testing a set of design principles for educational programming software, and by producing and scientifically evaluating a programming tool as an embodiment of this set. Through this evaluation, the suggestion of Koios as a practically useful programming tool for novices seems to be well supported.

The paper describes our usage of and experience with the method of participatory systems mapping. The method, developed for the purpose of facilitating knowledge brokerage, builds on participatory modelling approaches and applications and was used in several events involving both researchers and policy makers. The paper presents and discusses examples of how different types of participatory interaction with causal loop diagrams ("system maps") produced different insights on issues related to sustainable consumption and enabled participatory reflection and sharing of knowledge. Together, these insights support a systemic understanding of the issues and thus the method provides instruments for coping with complexity when formulating policies for sustainable consumption. Furthermore the paper discusses the ability of the method - and its limits - to connect mental models of participants through structured discussion and thus bridge boundaries between different communities.

A Biologia Molecular e a Biotecnologia e seus conceitos subjacentes estão inseridos no currículo escolar da educação básica e têm estado presentes na vida cotidiana dos estudantes, envolvendo a análise e tomada de decisão sobre aspectos éticos relacionados à produção e aplicação do conhecimento científico e tecnológico. As explicações de alguns fenômenos e processos relacionados a estes temas estão quase sempre no nível molecular e atômico, que é descrito e explicado com modelos conceituais e físicos, ou até mesmo imagens. À luz da Teoria dos Modelos Mentais de Johnson-Laird, as pessoas raciocinam através de modelos mentais, podendo utilizar outras formas de representações mentais como proposições e imagens. Nesse contexto propôs-se diagnosticar entre treze alunos dos cursos de Licenciatura em Ciências Exatas (LCE) e Bacharelado em Ciências Físicas e Biomoleculares (CFBio), ambos cursos da Universidade de São Paulo, quais as representações mentais que esses alunos possuíam sobre o tema proteínas, bem como a contribuição de uma sequência didática utilizando modelos táteis para o ensino e aprendizagem da estrutura e função de proteínas. Para tal, realizamos (a) uma entrevista com os alunos dos cursos mencionados (pré-teste), (b) dois cursos com duração de três dias para cada turma (LCE e CFBio) e (c) uma entrevista com os mesmos alunos transcorrida uma semana após a realização de cada curso (pós-teste). Os dados obtidos foram de três tipos: registros escritos (desenhos e/ ou esquemas); um ou mais modelos táteis montados com materiais de baixo custo; áudio e imagens oriundos das filmagens das entrevistas. Os registros escritos e os modelos táteis de cada aluno foram fotografados e os áudios das entrevistas transcritos, gerando um documento individual que possibilitou uma análise de conteúdo, permitindo a divisão da amostra em duas categorias: alunos modelizadores e não modelizadores, cada uma com subcategorias próprias. A detecção das representações mentais que os alunos possuíam antes e após o curso sinalizou que a contribuição da sequência didática aplicada no curso para o ensino/aprendizagem do tema proteínas foi positiva, promovendo o aumento do número de alunos modelizadores e possibilitando aos mesmos o aumento do nível de complexidade e sofisticação em suas representações externas (modelos táteis e desenhos) e a evolução e esclarecimento de conceitos antes não compreendidos. / The Molecular Biology and Biotechnology and its underlying concepts are embedded in the curriculum of basic education and have been present in the daily life of students, involving the analysis and decision making about ethical issues related to the production and application of scientific and technological knowledge. The explanations of some phenomena and processes related to these themes are almost always in atomic and molecular level, which is described and explained with physical and conceptual models, or even images. In light of the mental models theory of Johnson-Laird, people reason through mental models and may use other forms of mental representations as propositions and images. In this context we proposed diagnose mental representations that students in higher education had on the subject proteins, as well as the contribution of a didactic sequence using tactile models for teaching and learning the structure and function of proteins. Thirteen students of two undergraduation courses Teacher education course in Exact Sciences (LCE) and Bachelor in Biomolecular and Physical Sciences (CFBio) - participated of this research. The tools used for data collection were: (a) an interview with the students of the courses mentioned (pre-test), (b) two courses lasting three days for each group (CFBio and LCE) and (c) an interview with the same students made one week after completion of each course (post-test). The data were of three kinds: written records (drawings and/or diagrams), one or more tactile models assembled with low cost materials, audio and pictures from the filming of the interviews. Written records and tactile models of each student were photographed and audio interviews transcribed, generating an individual document that provided a content analysis, allowing the classification of students in two categories: modellers and non-modellers, each one with its own subcategories. The detection of mental representations that students had before and after the course indicated that the contribution of the didactic sequence for the teaching/learning of the subject proteins was positive, increasing the number of students modellers and enables them (a) increase the level of complexity and sophistication in their external representations (drawings and tactile models) and (b) the development and clarification of concepts not previously understood.

At the same time that additional coordination and cooperation between involved stakeholder groups is required more than ever to respond to changing environmental and socio-economic conditions, there has been an increasing trend of polarization across several important social divides (scientists/local actors, urban/rural, and political partisanship). Boundary organizations and boundary chains have been promoted as ways to help mitigate the problematic effects these divisions have on the successful communication of climate adaptation information in the water management sector. In this dissertation, I present three studies that were conducted in two regions to further explore stakeholder groups and the boundary chains that connect them. Both areas (Guanacaste, Costa Rica and Montana, USA) are historically agricultural regions experiencing ongoing environmental and socio-economic shifts. A mental models approach involving the use of interviews and surveys was used in each study area. The first two studies were conducted in Guanacaste and focused on comparing stakeholder group perceptions of their water system and hydro-climate information and on the differences in trust in forecast sources and its impact on forecast use. The results of these studies suggest that there is a distinction between the perceptions of larger stakeholder groups (e.g. government agencies or large farmers) and smaller groups (e.g. local water committees), and that this division suggests a need for boundary-type translation work. The third study was conducted in Montana with a focus on what communication strategies are used by, and what prompts engagement with, a boundary chain connecting rural agriculturalists to urban scientists. The results show that members of the network generally agree that for successful communication it is important both to not engage in ways viewed as attacks on agriculture and to make attempts to understand and respect local agricultural contexts. While there is some tension in the network, overall “buy-in” to the goal of bridging divides appears to be a common reason for engagement. In addition, organizations engage with the boundary chain for both the opportunity to connect to others and because of the need for translation between the concerns and logistics of different groups.

In this study, I investigated the precursors and the outcomes of team resilience. In contrast to many resilience studies, which focus on low-probability, high-impact challenges, I investigated resilience in the face of high-frequency, low-impact challenges that teams can face in their operational environments. I conducted an extensive literature analysis of the field of resilience and on the basis of this constructed a model of team resilience by integrating insights from high reliability organizing, positive organizational scholarship, sensemaking and disaster resilience studies. I then tested and improved this model through an exploratory study of team behaviour in two 'Escape Game' settings in which teams of 5 people worked through a series of puzzles under time-constrained and somewhat stressful conditions. Following the exploratory study, I developed the resilience model into an operationalizable format and tested it using seven runs of a simulation study involving 547 individuals in 68 teams. In the simulation, teams had to work both quickly and accurately whilst adapting to the changing conditions of a turbulent, competitive environment. Quantitative and qualitative data were collected on various team attributes, team resilience and team performance. I have used quantitative data as the main source of analysis and qualitative data as a supporting tool. Self-completion questionnaires, objective performance indicators, direct observation and post-simulation team and individual reflections were among the data collection tools that were used to obtain data. Team resilience shows highly significant associations with a range of objective measures of team performance. In turn, resilience is supported by several team attributes, including collective mental models, effective channels of communication and systems of information gathering and team cohesion. When teams faced challenges outside of their existing action repertoires their ability to improvise also contributed to resilience. Finally, when teams overcame (novel) challenges, this fed back into their accumulated knowledge through collective learning, enriching action repertoires. Together, these features bestow teams with resilience, which, in turn, enables them to overcome disturbances that might otherwise impede operational performance. In its final form, my resilience model serves as an explanation of the mechanisms of resilience and identifies its antecedents and outcomes. It can inform teams operating in uncertain, ambiguous and volatile work conditions about the capacities and capabilities they need in order to create and sustain resilience in daily operations.

Background: The quality of team-based care impacts patient post-hospitalization outcomes, yet there is a gap in our understanding of how specific team processes impact patient post-hospitalization outcomes. Shared Mental Models (SMMs) is a team process from organizational psychology; it provides an understanding of how providers coordinate complex tasks as a team. SMMs are the team members’ organized knowledge needed for effective team performance. Military research shows that teams with more convergent SMMs have higher performance and better outcomes. In healthcare, patient discharge exemplifies an activity that requires a high level of coordination among interprofessional team members. Two relevant domains of SMMs are Taskwork SMM (team assessment of patient’s readiness for hospital discharge) and Teamwork SMM (quality of day of discharge teamwork). Because of the newness of SMM to healthcare, we lack measures to understand SMMs among interprofessional discharge teams. Study Purpose & Aims: The purpose was to pilot a novel measurement approach assessing SMMs of discharge teams, and explore their relationships to patient 30-day post-hospitalization outcomes (quality of care transition and utilization of unplanned medical services). Aim 1 determined the content and degree of convergence of discharge teams’ SMMs (taskwork and teamwork). Aim 2 examined the relationship between discharge team SMMs and patient post-hospitalization outcomes. Methods: A prospective longitudinal pilot study was used to examine the SMMs of 64 unique discharge events in three inpatient units at a single hospital. Discharge team members independently completed a questionnaire measuring the Teamwork SMM (using the Shared Mental Model Scale) and the Taskwork SMM (using the Discharge Provider-Readiness for Hospital Discharge Scale). Data were collected from the patient 30 days post-discharge to determine the quality of transition (using the Care Transition Measure or CTM-15) and use of unplanned utilization of medical services (unplanned readmission or ED visit). Interrater Agreement (r*wg(j)) was used to determine the SMM convergence (or level of agreement) among the discharge team. The relationship between SMMs and the quality of transition outcome (n = 42) was determined using standard regression analysis. Logistic regression was used determine the relationship of SMMs with utilization of unplanned medical services (n = 56). Results: Overall, discharge teams reported high levels of Taskwork SMMs (M = 8.46, SD =.91) and Taskwork SMM Convergence (M = .90, SD =.10), indicating that the discharge team perceived and agreed that patients had high levels of readiness for hospital discharge. Discharge teams also reported having high-quality Teamwork SMMs (M = 6.11, SD = 0.39) and Teamwork SMM Convergence (M = .85, SD = .10), suggesting that most discharge teams perceived and agreed that high quality teamwork was provided during the discharge process. Discharge events from the three inpatient units significantly differed in their Teamwork and Teamwork SMM content and convergence scores. Discharge teams’ Teamwork SMMs and Taskwork SMMs were positively associated with the CTM-15 score, while controlling for key contextual factors (t = 3.94, p = .001; t = 3.94, p = .001, respectively). Conclusion : Discharge teams’ Taskwork SMM and Teamwork SMM was positively associated with patient-reported quality of transition from the hospital. There was insufficient evidence to support that utilization of unplanned medical services is related to discharge teams’ SMMs. Measuring the SMMs of the discharge team provides a method for assessing a team process critical to safe patient discharges.

This research was conducted to determine if students receiving complex systems instruction in the form of software simulations recognize patterns and underlying elements of complex systems more effectively than students receiving traditional instruction. Complex systems were investigated with an analytic (reductive) approach in a control group and with a synthesis approach in the treatment group. Exploration of this top-down approach to learning complex systems counters traditional bottom-up methodologies, investigating systems and subsystems at the component level. The hypothesis was that students experiencing complex systems scenarios in a computer-based learning environment would outperform their counterparts by constructing a greater number of explanations with emergent-like responses. A mixed method experimental, pretest posttest, control group triangulation design research study was designed for high school students enrolled in an Introduction to Technology and Engineering course. A pretest consisting of one open-ended near transfer problem and one far transfer problem was administered, investigating the generation of reductive (clockwork) and complex (emergent-like) mental models. A stratified sampling procedure was used to assign students to control or treatment groups. Following treatment, an analysis of covariance failed to reveal statistically significant evidence supporting the hypothesis. However, qualitative data in the form of student transcriptions, daily lab reports, and data entry worksheets revealed evidence of emergent-like response and behaviors.

This thesis consists of a series of internationally published, peer reviewed, conference research papers and one journal paper. The papers evaluate and further develop two modelling methods for use in Information Technology (IT) design and for the educational and training needs of students within the area of computer and network technology. The IT age requires technical talent to fill positions such as network managers, web administrators, e-commerce consultants and network security experts as IT is changing rapidly, and this is placing considerable demands on higher educational institutions, both within Australia and internationally, to respond to these changes.

This thesis explores the application of personal construct psychology and the repertory grid to performance management in a technical consulting organisation. The research examines what is important for a manager in assessing work performance and how each manager's mental model for performance compares with his/her peers. Managers acting as raters are the critical link in the observation and assessment of performance and in the feedback process. Rater observations and judgements are affected by their personal mental models regarding what is important. These views may or may not accord with those of their peers, resulting in inconsistency and unfair assessments, or with what the organisation's strategy demands. Understanding rater views on what is important, and how well these align with strategy, is a key to ensure that the appraisal process supports, rather than hinders, both individual and organisational needs. Each manager's personal constructs relating to appraisal were elicited through a repertory grid interview. The elicited constructs were taken together and categorised to derive broad performance categories summarising the views of the entire management team. Each individual's personal constructs were then allocated to the relevant common category to develop a view of how each manager related to the group's overall approach to appraisal. A measure for the importance of each category in making performance judgments (importance score) was derived based on the correlation of the constructs in each category with an overall performance construct. A second measure of a manager's preparedness to discriminate between levels of performance was also derived (discriminant score) based on the variation in each manager's construct structure. In keeping with the personal construct psychology approach, the process emphasizes the importance of discussion with the individual concerned to verify the sorting and ranking pro cess. A ranking process to establish the overall management group priorities for judging performance (team mental models) was demonstrated and a charting process was developed to facilitate presentation and discussion of the results. The research has demonstrated the strength of the repertory grid process as a means of getting at a rater's framework for thinking about appraisal and provides a way to identify possible voids or blind spots in a rater's approach. Understanding the most important categories of performance used by raters provides an opportunity for management to determine whether these are likely to achieve the objectives of the company, and if necessary, to introduce and inculcate different approaches.