Comparison of Students' Knowledge Structure Coherence and Understanding of Force in the Philippines,Turkey, China,Mexico, and the United States

This study investigates the ongoing debate in the conceptual change literature between unitary and elemental perspectives on students' knowledge structure coherence. More specifically, the current study explores two potential explanations for the conflicting results reported by Ioannides and Vosniadou (2002 Ioannides, C. and Vosniadou, S. 2002. The changing meanings of force. Cognitive Science Quarterly, 2(1): 5–62.  [Google Scholar])and diSessa, Gillespie, and Esterly (2004 diSessa, A. A, Gillespie, N. and Esterly, J. 2004. Coherence versus fragmentation in the development of the concept of force. Cognitive Science, 28: 843–900. [Crossref], [Web of Science ®] , [Google Scholar]) in terms of differences in coding schemes and differences in student populations. The current study addresses these questions by applying the coding schemes from both studies to interviews with 201 students drawn from the United States, the Philippines, Turkey, China, and Mexico. The analyses focus first on the coding schemes, suggesting that differences in coding schemes seem unlikely to account for the differences in the original studies. The analyses then focus on potential differences between student populations, suggesting that some differences exist in terms of consistency and meanings that might result from language, culture, or educational systems, but that these differences are too small to account for the radical differences in the findings of the original studies. Two additional explanations are then proposed and explored involving the instruments and the epistemological stances invoked for the students. Overall, the results align more closely with the findings of diSessa, Gillespie, and Esterly (2004 diSessa, A. A, Gillespie, N. and Esterly, J. 2004. Coherence versus fragmentation in the development of the concept of force. Cognitive Science, 28: 843–900. [Crossref], [Web of Science ®] , [Google Scholar]). [Supplemental materials are available for this article. Go to the publisher's online edition of Journal of the Learning Sciences for the following free supplement: Coding Schemes and Rules.]     

The impact of alternative approaches to comforting,closeness of relationship,and gender on multiple measures of effectiveness

The impact of 6 approaches to comforting (suggesting a diversion, expressing optimism, providing an external account, offering assistance, explaining the perspective of the offender, and a combination of the first 5), attributed to either a good friend or a casual acquaintance, was assessed for 2 situations by 394 students. Distressed individuals responded to comforting messages along two dimension: feeling less upset and feeling demeaned, with some indications that yet a third dimension (appreciating the concern of the comforter) may exist. The message that combined elements from the other 5 approaches yielded generally the most positive responses, but responses to specific message approaches varied with situation and dimension of response. Messages from good friends were more successful than those from casual acquaintances in helping the distressed individual to feel less upset.     

An assessment of methodological options for investigating the development of persuasive skills across childhood

This study compared two fundamentally different approaches to assessing the development of persuasive skills in children: asking them to generate messages versus having them select from preformulated messages or strategies. Also investigated was the approach of asking children to indicate their rationale for choosing a particular message. Using criteria of showing a developmental progression with age and positive correlation with social cognitive measures presumed to be relevant to persuasive skills, the present study suggests more success with message generation than with selection of preformulated messages. Elicitation of the rationale may prove a useful supplement to either of the former approaches.     

Freshman Overconfidence and Library Research Skills: A Troubling Relationship?

This study focuses on the relationship between freshman college students’ self-reported confidence level in library research and their actual library research skills. A demographic survey and skills test were administered to 377 freshmen at East Carolina University in their first-semester English composition classes. The article addresses two research questions: What is the correlation between freshman students’ self-reported confidence level and tested skills? Do other factors such as age, gender, high school grades, or previous library instruction have an impact on students’ confidence level or skills? Results examine implications for library instruction.     

General Media,Minorities, and Research

Ronald G. Hick A Survey of Mass Communication (Gretna, La.: Pelican Publishing Co., 1977—$7.95, paper)

Everette E. Dennis The Media Society: Evidence About Mass Communication in America (Dubuque, Iowa: Wm. C. Brown, 1978—$6.95, paper)

Leslie J. Friedman Sex Role Stereotyping in the Mass Media: An Annotated Bibliography (New York: Garland Publishing, 1977—$25.00)

Maurine Beasley and Sheila Silver Women in Media: A Documentary Source Book (Women's Institute for Freedom of the Press, 3306 Ross Place, N.W., Washington, D.C. 20008—$5.95, paper)

Preben Sepstrup Consumption of Mass Communication: Construction of a Model on Information Consumption Behavior (Handelsvidenskabelig Boghandel, Fuglesangsalle 4, DK-8210 Aarhus V, Denmark—D. kr . 12, paper)

J. Michael Crabtree and Kenneth E. Moyer Bibliography of Aggresive Behavior: A Reader's Guide to the Research Literature (Alan R. Liss, Inc., 150 Fifth Ave., New York, N.Y. 10011—$35.00).

Marcia Guttentag and Shalom Saar, Evaluation Studies Review Annual, Volume 2: 1977 (Beverly Hills, Calif.: Sage Publications, 1977—$29.95)

Paul C. Cozby Methods in Behavioral Research (Palo Alto, Calif.: Mayfield Publishing, 1977—$6.95, paper)     

Factors Influencing the Adoption of HD Radio™ by Local Radio Station Managers

A sample of 114 radio stations measured attitudes toward the adoption of HD Radio? and found that stations that have gone digital were motivated the most by 2 of 5 identified factors: image enhancement and programming considerations. The lesser factors were competition, revenue, and cost. The study also examined the relation between risk and survival. The data confirmed the importance of managerial attitudes toward disruptive technologies and their relation to image, programming, and competition.     

Social Media and Communications: Developing a Policy to Guide the Flow of Information

The use of social media is ubiquitous in the daily lives of nearly three quarters of the population in the United States. This article addresses the process and results of a policy development project for a National Network of Libraries of Medicine Regional Medical Library. Content, scheduling, editing, and author responsibilities are addressed for each of the chosen media outlets, as well as the preparation of prefatory material using an online social media policy development tool.