Oral History in the Classroom: A Comparison of Traditional and On-line Gerontology Classes

In this study, the effectiveness of an oral history assignment was assessed in a traditional gerontology class versus a distance education (DE) gerontology class. Attitudes toward older adults and the aging process were measured before and after students in the traditional (n = 29) and DE (n = 16) setting completed an oral history assignment. Scores were evaluated at posttest for differences between groups. The assignment positively influenced students' attitude toward older adults in both classes. Results indicate that this assignment was as effective in the DE setting as in the traditional setting. Findings suggest that oral history is an effective teaching assignment in a DE gerontology class.     

Collaborating With a Skilled Peer: The Influence of Achievement Goals and Perceptions of Partners' Competence on the Participation and Learning of Low-Achieving Students

The authors examined whether motivational goals influenced the participation and performance of low-achieving students during collaborative problem solving with a high-achieving partner. Thirty-five pairs of 4th- and 5th-grade students were randomly assigned a set of instructions designed to induce students to adopt a learning goal or a performance goal. The following day, the students were individually given a posttest on problems similar to those worked on collaboratively. The low-achieving students given learning-goal instructions performed better on the posttest problems and perceived their partner's competence as more similar to their own than did the low-achieving students given performance-goal instructions. No differences in overall amount or level of low achievers' participation during collaborative problem solving were observed. Implications of the findings for the use of peer learning in heterogeneous classrooms are discussed.     

Kieferchirurgische Operationsplanung mit Hilfe von Techniken der virtuellen Realit?t

Zusammenfassung.   Für ein vollst?ndig computergestütztes Planungssystem zum Zwecke der kieferchirurgischen Operationsplanung ist die Bereitstellung von virtuellen Werkzeugen für den Chirurgen eine grundlegende Voraussetzung. Ausgehend von den Volumendaten mit Sch?del- und Kieferknochen des Patienten erm?glicht ein einfaches Interface unter Verwendung einer geeigneten Visualisierung und haptischer Eingabeger?te die interaktive Definition und Manipulation einzelner virtueller Knochensegmente. Wir haben moderne kraftrückgekoppelte Ger?te aus dem Niedrigpreisbereich eingebunden und auf ihre F?higkeit untersucht, das dreidimensionale Verst?ndnis im Planungsproze?durch Anlehnung an die Vorg?nge bei der chirurgischen Prozedur zu erh?hen. Durch diese Eingabeger?te ist es m?glich, die Knochensegmentierung für eine Osteotomie des Unterkiefers intuitiver und schneller durchzuführen. Die definierten Teilvolumina ergeben zusammen mit ihrer r?umlichen Neuanordnung auf Grundlage einer kephalometrischen Analyse einen Operationsplan. Nach erfolgter Planung werden die Planungsergebnisse in den Operationssaal übertragen. Die intraoperativen Techniken beinhalten die Visualisierung der Planungsergebnisse, die Steuerung der Anwendung über Sprache und die Bestimmung der Patientenposition mittels eines elektromagnetischen 3D-Trackingsystems. Eingegangen am 27. April 2000 / Angenommen am 21. Februar 2001     

Funktionelle gastrointestinale St?rungen Funktionelle Dyspepsie und Reizdarmsyndrom

Ohne Zusammenfassung     

Learning Benefits of Self-Controlled Knowledge of Results in 10-Year-Old Children

Abstract

The leg strength of 70 college men was measured in a position designed to involve the power thrust of the major muscle groups used in the vertical jump. The subjects then performed a modified Sargent jump that used no arm snap. Although the reliability of all measures was high, individual differences in the ratio of tested strength to body mass showed only a low and nonsignificant correlation with jumping performance. The results are interpreted to support the hypothesis that strength exerted against a dynamometer involves a different neuromotor pattern than strength exerted by the muscles during a movement. Tables of means, variabilities, and intercorrelations are included in the report.     

The Scientific Value of Cognitive Load Theory: A Research Agenda Based on the Structuralist View of Theories

In this paper, two methodological perspectives are used to elaborate on the value of cognitive load theory (CLT) as a scientific theory. According to the more traditional critical rationalism of Karl Popper, CLT cannot be considered a scientific theory because some of its fundamental assumptions cannot be tested empirically and are thus not falsifiable. According to the structuralist view of theories introduced by Joseph D. Sneed, a theory may be considered scientific even if it comprises nontestable fundamental assumptions. Rather, the scientific value of a theory results from the holistic empirical content of the overall theory net built around fundamental assumptions and from the successful applications of this theory net to explain and predict empirical findings. This latter view is helpful to explicate some implicit methodological assumptions of CLT research and to avoid the potential circularity of CLT’s fundamental assumptions. Additionally, the structuralist view of theories can be directly used to derive a research agenda for the future development of CLT.     

Identifying paths to audience success of media products: the media decision-makers’ perspective

Research on media success factors is a fragmented field. Definitions, measures, and methods vary, and findings are often inconsistent. In an attempt to fill this perceived research gap, we distilled generic success factors of media products from the literature. Guided by theory and empirical findings, these factors were aggregated to complex concepts, building blocks of success that we further investigated in an exploratory qualitative study. We found that the building blocks are applicable to all types of media, independent of seriality and content types of media products. Subsequently the research question of this article is: Which building blocks of success are most important for media products? To answer this question, we conducted an online survey of 255 media professionals in print, audio-visual, and online media in Austria, Germany and Switzerland. To analyze our data, we deployed qualitative comparative analysis, a method based on set theory that is suitable to investigate complex causality. We conclude that four building blocks are necessary for success: “good” distribution, environmental orientation, form/design, and human resources are preconditions for achieving success in terms of audience market share. In addition, three patterns emerge in the sufficient paths (combinations of building blocks) to success. Which route to success a media product shows can be related to the width of its topical scope and the corresponding projected audience size.     

An external focus of attention is a conditio sine qua non for athletes: a response to Carson,Collins, and Toner (2015)

In this invited response to a Letter to the Editor by Carson, Collins, and Toner (2015), I comment on various issues raised by the authors. I highlight the broad range of tasks and dependent measures used in studies comparing the effectiveness of external versus internal foci of attention. These studies – many of which involved sport skills – have consistently found performance or learning benefits when an external focus was adopted. There is no convincing evidence that performers’ preferences, or their familiarity with a certain focus, have a moderating effect. Anecdotal evidence reported by coaches who have compared the two types of foci is consistent with research findings. An external focus presumably promotes functional connectivity and contributes to goal-action coupling.