Representing Dialectical Arguments

The purpose of this paper is to present and contrast two approaches to representing the structure of complex, dialectical arguments. Previous research has focused mainly on representing single arguments presented by a single arguer; this analysis examines the naturalistic give and take of dialectical argumentation among fourth graders. One approach to representing dialectical arguments is the argument network approach, which views the arguments as webs of interlocking premises and conclusions. The second approach is the causal network approach, which treats many of the ideas presented in the discussions as events linked in causal, narrative sequences. The two approaches capture different but complementary aspects of the structure of the arguments

Are Scientific Theories that Predict Dat a Mor e Believable than Theories that Retrospectively Explain Data ? A Psychological Investigation

Philosophers have disagreed about whether theories that make successful predictions are more believable than theories that merely explain data that have aheady been discovered. Predictivists believe that theories that make successful predictions have an edge over theories that offer only retrospective explanations of the same data. Nonpredictivists maintain that whether a theory predicts data or explains data retrospectively is irrelevant to the believability of the theory. The purpose of this paper is to report on three psychological experiments designed to determine whether undergraduates behave as predictivists or nonpredictivists when they evaluate theories. Results indicate that subjects behaved as nonpredictivists when one theory predicted a body of data and a second theory was devised later to explain the same data retrospectively. However, subjects behaved as predictivists in the situation in which a theory retreated in the face of anomalous data by adding an auxiliary hypothesis; for instance, theories that predicted data by adding the necessary auxiliary hypotheses before the data came in were more believable than theories that added the auxiliary hypothesis in reaction to the data. These results suggest that cognitive models of theory choice that assume that people are nonpredictivists may require modification

The Theory-Ladenness of Data: An Experimental Demonstration

Most philosophers of science now believe that scientific data are theory laden, i.e., the evaluation of data is influenced by prior theoretical beliefs. Although there is historical and psychological evidence that is consistent with the theory-laden position, experimental evidence is needed to directly test whether prior beliefs influence the evaluation of scientific data. In a fully counterbalanced design, one group of subjects received evidence that dinosaurs were cold-blooded, and another group of subjects received evidence that dinosaurs were warm-blooded. The subjects reported a strong belief in whichever theory they had read about. Then subjects were presented with a piece of data that supported one theory and contradicted the other theory. The identical piece of data was rated as more believable when it was consistent with the subject's theory than when it was inconsistent. These results provide clear support for the position that scientific data are theory laden

Aims in the practice of historiography: An interview study with Finnish historians

Many recent approaches to history education—such as ones related to historical thinking, historical reasoning, or inquiry-based learning—have brought the practice of historiography (i.e. historical research and writing) to the center the learning about history. Students are to learn about how historical knowledge is constructed, and this is often pursued by instructional methods such as modeling or simulating expert historians’ practices in classrooms. In this paper, we approach historiography primarily as an epistemic practice that shaped in part by (historians’) aims or goals.  Understanding those aims can contribute significantly to our understanding of the historical inquiries that ensue. Yet education has not made these aims a central focus of research or instruction. Therefore, we explored academic historians’ aims in their practices of historiography. We interviewed 26 Finnish historians about their ongoing research endeavors. Our results display a range of aims in academic historiography, including general epistemological concepts (e.g. knowledge), dialogical aims (e.g. question existing ideas), textual products, dissemination (e.g. popularizing), bringing about societal change (e.g. influence sense of possibilities), connection to present, and emotions. These findings improve our understanding of the diversity of historiography as an intentional practice, and thus provide a better ground for developing the kind of history education that builds on historians’ practices.</p

Historians and conceptual change in history itself: The domain as a unit of analysis

Along their path towards expertise, historians undergo conceptual changes. The purpose of this theoretical paper is to argue that conceptual change in history involves, first, a fundamental shift from an understanding of history as the past to an understanding of history as human production. And second, expert conceptual change involves understanding multiple approaches to the production of history. Each approach is associated with constraints on historical concepts and meta-concepts. We outline differences and similarities between these broad approaches through a framework that merges epistemic cognition and historical theory. Currently, there exists no singular conception of history to set as an unproblematic aim of epistemic education, and conceptual change must therefore embrace the aim of understanding of multiple conceptions.</p

The diagnosis of scientific reasoning skills: how teachers' professional knowledge predicts their diagnostic accuracy

Diagnostic competences of teachers are an essential prerequisite for the individual support of students and, therefore, highly important. There is a substantial amount of research on teachers’ diagnostic competences, mostly operationalized as diagnostic accuracy, and on how diagnostic competences may be influenced by teachers’ professional knowledge base. While this line of research already includes studies on the influence of teachers’ content knowledge (CK), pedagogical content knowledge (PCK), and pedagogical-psychological knowledge (PK) on the diagnosis of subject-specific knowledge or skills, research on the diagnosis of cross-domain skills (i.e., skills relevant for more than one subject), such as scientific reasoning, is lacking although students’ scientific reasoning skills are regarded as important for multiple school subjects (e.g., biology or physics). This study investigates how the accuracy of pre-service teachers’ diagnosis of scientific reasoning is influenced by teachers’ own scientific reasoning skills (one kind of CK), their topic-specific knowledge (i.e., knowledge about a topic that constitutes the thematic background for teaching scientific reasoning; which is another kind of CK), and their knowledge about the diagnosis of scientific reasoning (one kind of PCK) and whether the relationships between professional knowledge and diagnostic accuracy are similar across subjects. The design of the study was correlational. The participants completed several tests for the kinds of professional knowledge mentioned and questionnaires for several control variables. To ensure sufficient variation in pre-service teachers’ PCK, half of the participants additionally read a text about the diagnosis of scientific reasoning. Afterwards, the participants completed one of two parallel video-based simulations (depicting a biology or physics lesson) measuring diagnostic accuracy. The pre-service teachers’ own scientific reasoning skills (CK) were a statistically significant predictor of diagnostic accuracy, whereas topic-specific knowledge (CK) or knowledge about the diagnosis of scientific reasoning (PCK), as manipulated by the text, were not. Additionally, no statistically significant interactions between subject (biology or physics) and the different kinds of professional knowledge were found. These findings emphasize that not all facets of professional knowledge seem to be equally important for the diagnosis of scientific reasoning skills, but more research is needed to clarify the generality of these findings

Innovating Pedagogy 2017: Exploring new forms of teaching, learning and assessment, to guide educators and policy makers. Open University Innovation Report 6

This series of reports explores new forms of teaching, learning and assessment for an interactive world, to guide teachers and policy makers in productive innovation. This sixth report proposes ten innovations that are already in currency but have not yet had a profound influence on education. To produce it, a group of academics at the Institute of Educational Technology in The Open University collaborated with researchers from the Learning In a NetworKed Society (LINKS) Israeli Center of Research Excellence (I-CORE). Themes: • Big-data inquiry: thinking with data • Learners making science • Navigating post-truth societies • Immersive learning • Learning with internal values • Student-led analytics • Intergroup empathy • Humanistic knowledge-building communities • Open Textbooks • Spaced Learnin

Sensitivities of the Proton-Nucleus Elastical Scattering Observables of 6He and 8He at Intermediate Energies

We investigate the use of proton-nucleus elastic scattering experiments using secondary beams of 6He and 8He to determine the physical structure of these nuclei. The sensitivity of these experiments to nuclear structure is examined by using four different nuclear structure models with different spatial features using a full-folding optical potential model. The results show that elastic scattering at intermediate energies (<100 MeV per nucleon) is not a good constraint to be used to determine features of structure. Therefore researchers should look elsewhere to put constraints on the ground state wave function of the 6He and 8He nuclei.Comment: To be published in Phys. Rev.