Optical Pulsars and Black Arrows: Discoveries as Occasioned Productions     

Timothy Koschmann  Alan Zemel 《学习科学杂志》2013,22(2):200-246

The current article represents a methodological proposal. It seeks to address the question of how one might recognize a discovery as a discovery without knowing in advance what is available to be discovered. We propose a solution and demonstrate it using data from a study previously reported by J. Roschelle (1992) Roschelle, J. 1992. Learning by collaborating: Convergent conceptual change. Journal of the Learning Sciences, 2: 235–276. [Taylor & Francis Online] , [Google Scholar]. Roschelle investigated 2 students' developing understandings of certain abstract features of Newtonian mechanics while working within a computer-based microworld, the Envisioning Machine. We employ an approach we term discovery as occasioned production to reexamine his data. Such an approach proceeds stepwise from the identification of some matter discovered, working backward to see just where that matter entered the conversation and then, finally, tracing from that point forward to illuminate how the proposal for a possible discovery was ultimately transformed into a discovery achieved. The notion of “evident vagueness,” borrowed from H. Garfinkel, M. Lynch, and D. Livingston's (1981) Garfinkel, H., Lynch, M. and Livingston, D. 1981. The work of discovering science construed with materials from the optically discovered pulsar. Philosophy of Social Science, 11: 131–158. [Crossref], [Web of Science ®] , [Google Scholar] account of the discovery of an optical pulsar, emerges as an important feature of our analysis. Following H. Garfinkel (2002) Garfinkel, H. 2002. Ethnomethodology's program: Working out Durkheim's aphorism. Lanham, MD: Rowman & Littlefield..  [Google Scholar], we present our findings as a “tutorial problem” and offer a suggestion for how a program of practice studies in the learning sciences might be pursued.  相似文献   

The role of model building in problem solving and conceptual change     

Chwee Beng Lee  David Jonassen  Timothy Teo 《Interactive Learning Environments》2013,21(3):247-265

This study examines the effects of the activity of building systems models for school-based problems on problem solving and on conceptual change in elementary science classes. During a unit on the water cycle in an Asian elementary school, students constructed systems models of the water cycle. We found that representing ill-structured problems as system models improves problem solving as well as creating beneficial conceptual change related to the topic.  相似文献   

Criminal justice doctoral programs in the United States and Canada: Findings from a national survey     

Timothy J. Flanagan 《Journal of Criminal Justice Education》2013,24(2):195-213

Characteristics of 13 doctoral programs in criminal justice and criminology are examined. Features described include the age and size of the programs, representation of women and minorities among faculty and graduate students, admissions requirements and admissions activity, financial support available to graduate students, and characteristics of the curricula. Criminal justice doctoral programs vary widely on each of these characteristics.  相似文献   

Practicality in Virtuality: Finding Student Meaning in Video Game Education     

Timothy Barko  Troy D. Sadler 《Journal of Science Education and Technology》2013,22(2):124-132

This paper looks at the conceptual differences between video game learning and traditional classroom and laboratory learning. It explores the notion of virtual experience by comparing a commonly used high school laboratory protocol on DNA extraction with a similar experience provided by a biotechnology themed video game. When considered conceptually, the notion of virtual experience is not limited to those experiences generated by computer aided technology, as with a video game or computer simulation. The notion of virtuality can apply to many real world experiences as well. It is proposed that the medium of the learning experience, be it video game or classroom, is not an important distinction to consider; instead, we should seek to determine what kinds of meaningful experiences apply for both classrooms and video games.  相似文献   

Participative Leadership: Perspectives of Community College Presidents     

Lauren Grasmick  Timothy Gray Davies 《Community College Journal of Research & Practice》2013,37(2):67-80

This grounded theory study addressed the issue of how community college presidents foster active, broad-based participation in campus decision-making processes. This study was based on in-depth interviews with nationally recognized community college presidents selected on the basis of their work in implementing participative governance within their respective institutions. The findings of this study are presented according to the emergence of four axial categories, and a core category is described and explained. Participative leadership is highly interactive and dynamic. Perhaps most importantly, participative leadership is a developmental process for building environments for broad participation. The core category, Visioning Participative Environments, reveals the centrality of the visioning process throughout each sequence of the participative leadership process. This model identifies and explains key participative leadership practices that flow from the theoretical cornerstones.  相似文献   

A Constructive Development Approach to Assessing Variations within a Community College Population     

Timothy R. Boyer 《Community College Journal of Research & Practice》2013,37(10):781-795

This study utilized a constructive-developmental approach to accomplish 3 purposes: to create a developmental stage profile for a population of students attending a single community college, to analyze variations within and between subpopulations, and to explore the implications for administrators and planners seeking to provide supportive environments for different populations of students. The resulting profile indicated a wide range of variation within the overall population and significant variations between traditional and non-traditional age students. Implications for educational programming and supportive services were identified by using a constructive-developmental approach as an interpretive framework.  相似文献   

Binomial index of model fit: An elaboration     

Isadore Newman  John W. Fraas  Timothy Norfolk 《Structural equation modeling》2013,20(2):155-162

This article is an elaboration on the use of the binomial test of model fit value, which in this article will be referred to as the binomial index of model fit value, to gauge the degree that the data fit a path analytic or structural equation model. In addition, this article responds to the criticisms and comments made by Hsu (this issue), Drezner and Drezner (this issue), and Raykov and Penev (this issue) regarding the use of this approach to measuring the degree of model fit. We appreciate the comments provided by these authors. Their comments have assisted us in clarifying our reason for developing the binomial index of model fit procedure as well as our perception of its use.  相似文献   

Teachers' Emotional Support Consistency Predicts Children's Achievement Gains and Social Skills     

Timothy W. Curby  Laura L. Brock  Bridget K. Hamre 《Early education and development》2013,24(3):292-309

Research Findings: It is widely acknowledged that consistent, high-quality teacher–student interactions promote optimal developmental outcomes for children. Previous research on the quality of teacher–student interactions provides empirical support for this premise. Little research has been conducted on the consistency of teacher–student interactions. This study examines whether consistency in teachers' emotional support is related to better academic and social outcomes for children. Multiple observations were conducted in 694 prekindergarten classrooms. Mean levels of emotional support and consistency of emotional support were used as predictors in multilevel models. Results indicated that when mean levels of emotional support were controlled, within-day consistency of emotional support predicted several academic outcomes in prekindergarten as well as social competence in kindergarten. Practice or Policy: Results indicate that teachers' consistency of emotional support is a salient aspect of children's classroom environment. Findings suggest that consistency should be considered when evaluating teachers' emotionally supportive interactions.  相似文献   

Work–family conflict,relational turbulence mechanisms,conflict tactics and marital satisfaction*     

Timothy R. Worley  Marina R. Shelton 《Journal of Applied Communication Research》2020,48(2):248-269

ABSTRACT

This study examined how work–family conflict (WFC) is associated with mechanisms of relational turbulence, conflict tactics, and marital satisfaction. Six hundred and thirty-three married workers completed an online survey. Family interference with work and spouses’ work interfering with one’s family predicted greater relational uncertainty and interference from partners, whereas one’s own work interfering with family did not predict these mechanisms of turbulence. All three sources of relational uncertainty, and interference from partners, predicted increased avoidance and distributive tactic use. Facilitation from partners predicted increased use of integrative tactics. Finally, relational uncertainty, interference from partners, and distributive conflict tactics partially mediated the associations of WFC with marital satisfaction.  相似文献   

Diversity,Performance, and Satisfaction in Student Group Projects: An Empirical Study     

Schoenecker  Timothy S.  Martell  Kathryn D.  Michlitsch  Joseph F. 《Research in higher education》1997,38(4):479-495

This paper focuses on the effect that diversity has on the performance and satisfaction of student groups in a computer simulation project. Using structural equation modeling, we find evidence to support the contention of previous research that diversity negatively affects group satisfaction. This finding was strongest for undergraduate groups. While the relationship between diversity and performance is inconclusive, groups that are dominated by one person tend to have below average performance.  相似文献