THE CLASSROOM PASSWORD: A CLASS‐WIDE INTERVENTION TO INCREASE ACADEMIC ENGAGEMENT

The present study investigated the effectiveness of a novel class‐wide intervention, the Classroom Password, for increasing the academic engaged behavior of middle school students. The effectiveness of an independent group contingency was evaluated using a concurrent multiple baseline design across three seventh‐ and eighth‐grade classrooms. Results indicated that the intervention was effective across all three classrooms in increasing students’ academic engagement, or on‐task behavior, as evidenced by visual analysis and moderate to large effect sizes. Decreases in disruptive behavior were also observed across all three classrooms. Off‐task behavior was not substantially affected in any of the three classrooms. The intervention received mixed ratings by the classroom teachers regarding its social validity. Results of the present study suggest that the Classroom Password may be an effective class‐wide intervention for increasing the academically engaged behavior and decreasing the disruptive behavior of middle school students during instructional time.     

Initial hydration status, fluid balance, and psychological affect during recreational exercise in adults

There is little information on the impact of hydration status on the psychological response to exercise despite potential implications for adherence to an exercise programme and for overall health and fitness. We investigated initial hydration status, fluid balance, and psychological responses associated with a typical recreational exercise session in healthy adults. Fifty-two participants performed a freely chosen gymnasium-based exercise session at a fitness centre, with ad libitum access to fluids. Urine samples were collected on arrival for analysis of osmolality. Sweat loss was estimated from the change in body mass after correction for fluid intake and urinary losses. Subjective psychological ratings were recorded before and after exercise. Pre-exercise urine osmolality was above 900 mOsmol · kg(-1) (used as a threshold for hypohydration) in 37% of participants. Fluid intake during exercise was 390 ± 298 mL, while estimated sweat loss was 794 ± 391 mL. The percentage change from pre-exercise body mass was -0.62 ± 0.20%. Physically active adults who arrived to take part in exercise hypohydrated reported more negative changes in psychological affect in response to their subsequent freely chosen recreational exercise session than those classified as euhydrated prior to exercise (-0.2 ± 0.7 vs. 0.8 ± 0.7; P < 0.005).     

Student difficulty in constructing proofs: The need for strategic knowledge

The ability to construct proofs is an important skill for all mathematicians. Despite its importance, students have great difficulty with this task. In this paper, I first demonstrate that undergraduates often are aware of and able to apply the facts required to prove a statement but still fail to prove it. They thus fail to construct a proof because they could not use the syntactic knowledge that they had. By comparing doctoral students and undergraduates constructing proofs in abstract algebra, I have hypothesized four types of `strategic knowledge' – knowledge of how to choose which facts and theorems to apply – which the doctoral students appeared to possess and undergraduates did not. The doctoral students appeared to know the powerful proof techniques in abstract algebra, which theorems are most important, when particular facts and theorems are likely to be useful, and when one should or should not try and prove theorems using symbol manipulation. This revised version was published online in July 2006 with corrections to the Cover Date.     

Community Engagement at an Emerging Academic Medical Library: A Three-Pronged Outreach Model

The Oakland University William Beaumont School of Medicine’s (OUWB) service-oriented mission and vision is reflected in all aspects of the school including its culture, curriculum, research, community engagement, and the OUWB Medical Library. Though starting informally, the OUWB Medical Library’s outreach program has matured and now sustains a wide array of activities each year. This outreach program has blossomed into a three-pronged model that is inclusive of activities and endeavors engaging the institution and local community: integrate, partner, and create. Among its successes and challenges, the library’s ongoing outreach efforts have showcased the value of libraries in promoting community health and meaningfully contributing to the institutional mission.     

Framing Wind Energy: Strategic Communication Influences on Journalistic Coverage

The dominance of political communication over an issue like wind energy has the power to overwhelm attempts to frame wind farming as a scientific or environmental issue in the mediated public sphere. Using regulation as the primary newsmaker, politicians instead of scientists or environmental organizations become journalists’ sources in framing the issue. Wind energy is a special issue that is framed in unique ways due to environmental, political, and industry ties. Contest framing ensues between institutional stakeholders to win favorable media coverage. Through a sociological lens, this analysis examines how contemporary political communications continue to influence the media through professional routines and relationships even in a scientifically grounded industry during a surge of public environmentalism. Comparisons of political, energy industry, and environmental advocacy communications show that political and energy industry frames dominate newspaper coverage of energy issues even when environmental and scientific issues are inherent to the story.     

Undergraduate projects in mathematics

Conclusion We have claimed that project work introduces the student to a wide range of mathematical activities: critical reading, selection of material, mathematical exposition, talking about mathematics, formulation of problems, investigation of open problems, and so forth. It also encourages an active personal involvement in mathematics. Our aim in presenting this report has been to focus attention on some of the questions facing university mathematics teachers at this time, in the hope that others may be encouraged to seek their own answers.     

Book reviews

DIGITAL SENSATIONS: SPACE, IDENTITY, AND EMBODIMENT IN VIRTUAL REALITY. By Ken Hillis. Minneapolis: University of Minnesota Press, 1999; pp. xi + 271. $47.95 cloth; $18.95 paper.

THOMAS KUHN: A PHILOSOPHICAL HISTORY FOR OUR TIMES. By Steve Fuller. Chicago and London: The University of Chicago Press, 2000; pp. xvii + 472.

PROMETHEUS WIRED: THE HOPE FOR DEMOCRACY IN THE AGE OF NETWORK TECHNOLOGY. By Darin Barney. Chicago: Chicago University Press, 2000; pp. 340. $29.00.

DEWEY ON DEMOCRACY. By William R. Caspary. Ithaca, NY: Cornell University Press, 2000; pp. 256. $39.95.

THE ORGANIZING PROPERTY OF COMMUNICATION. By François Cooren. Philadelphia and Amsterdam: John Benjamins, 2000; pp. 272. $50.00.

CRAFTING SOCIETY: ETHNICITY, CLASS, AND COMMUNICATION THEORY. By Donald G. Ellis. Mahwah: Lawrence Erlbaum Associates, Publishers, 1999; pp. xvi + 229. $49.95.

PROGAY/ANTIGAY: THE RHETORICAL WAR OVER SEXUALITY. Ralph R. Smith and Russel R. Windes. Thousand Oaks, CA: Sage Publications, Inc., 2000; pp. xxiv + 240.

THEORIES OF CULTURE IN POSTMODERN TIMES. By Marvin Harris. Walnut Creek, CA: AltaMira Press, 1999; pp. 224. Cloth $62.00; Paper $22.95.

PRESIDENTIAL CRISIS RHETORIC AND THE PRESS IN THE POST‐COLD WAR WORLD. By Jim A. Kuypers. Westport, CT: Praeger, 1997; pp. xi + 242.     

Ecological Validity in Understanding Sport Performance: Some Problems of Definition

One of the most significant aspects of current sport psychology research is the trend toward developing the relationship between theoretical concepts and practical applications. There have been many recent calls for the development of specific experimental paradigms closely linked to critical features of movement control and social interaction within specific frames of reference such as competitive sport (e.g., Lee & Young, 1985; Martens, 1979). The concept of ecological validity has been proposed as a crucial element of this current research thrust, and this paper attempts to identify and define some of the more important criteria underpinning ecologically valid research in sport psychology. Vision and sport performance is used as an exemplary area of investigation in which problematic and specific issues are examined. The basis of this critique has important implications for other areas of interest in the application of the behavioral sciences to sport. It is concluded that much greater debate must be stimulated concerning this important methodological principle, and a preliminary definition is provided for this purpose as well as to aid in the process of research evaluation in sport psychology.