Differential reinforcement and resistance to change of divided-attention performance

Behavioral momentum theory provides a framework for understanding how conditions of reinforcement influence instrumental response strength under conditions of disruption (i.e., resistance to change). The present experiment examined resistance to change of divided-attention performance when different overall probabilities of reinforcement were arranged across two components of a multiple schedule. Pigeons responded in a delayed-matching-to-sample procedure with compound samples (color + line orientation) and element comparisons (two colors or two line orientations). Reinforcement ratios of 1:9, 1:1, and 9:1 for accurate matches on the two types of comparison trials were examined across conditions using reinforcement probabilities (color/lines) of .9/.1, .5/.5, and .1/.9 in the rich component and .18/.02, .1/.1, and .02/.18 in the lean component. Relative accuracy with color and line comparisons was an orderly function of relative reinforcement, but this relation did not depend on the overall rate of reinforcement between components. The resistance to change of divided-attention performance was greater for both trial types in the rich component with presession feeding and extinction, but not with decreases in sample duration. These findings suggest promise for the applicability of quantitative models of operant behavior to divided-attention performance, but they highlight the need to further explore conditions impacting the resistance to change of attending.     

Delayed matching to sample: Reinforcement has opposite effects on resistance to change in two related procedures

The effects of reinforcement on delayed matching to sample (DMTS) have been studied in two within-subjects procedures. In one, reinforcer magnitudes or probabilities vary from trial to trial and are signaled within trials (designated signaled DMTS trials). In the other, reinforcer probabilities are consistent for a series of trials produced by responding on variable-interval (VI) schedules within multiple-schedule components (designated multiple VI DMTS). In both procedures, forgetting functions in rich trials or components are higher than and roughly parallel to those in lean trials or components. However, during disruption, accuracy has been found to decrease more in rich than in lean signaled DMTS trials and, conversely, to decrease more in lean than in rich multiple VI DMTS components. In the present study, we compared these procedures in two groups of pigeons. In baseline, forgetting functions in rich trials or components were higher than and roughly parallel to those in lean trials or components, and were similar between the procedures. During disruption by prefeeding or extinction, accuracy decreased more in rich signaled DMTS trials, whereas accuracy decreased more in lean multiple VI DMTS components. These results replicate earlier studies and are predicted by a model of DMTS from Nevin, Davison, Odum, and Shahan (2007).     

Measuring patrons' technology habits: an evidence-based approach to tailoring library services

Librarians continually integrate new technologies into library services for health sciences students. Recently published data are lacking about student ownership of technological devices, awareness of new technologies, and interest in using devices and technologies to interact with the library. A survey was implemented at seven health sciences libraries to help answer these questions. Results show that librarian assumptions about awareness of technologies are not supported, and student interest in using new technologies to interact with the library varies widely. Collecting this evidence provides useful information for successfully integrating technologies into library services.     

Comparison of 3D reconstructive technologies used for morphometric research and the translation of knowledge using a decision matrix

The use of three‐dimensional (3D) models for education, pre‐operative assessment, presurgical planning, and measurement have become more prevalent. With the increase in prevalence of 3D models there has also been an increase in 3D reconstructive software programs that are used to create these models. These software programs differ in reconstruction concepts, operating system requirements, user features, cost, and no one program has emerged as the standard. The purpose of this study was to conduct a systematic comparison of three widely available 3D reconstructive software programs, Amira^®, OsiriX, and Mimics^®, with respect to the software's ability to be used in two broad themes: morphometric research and education to translate morphological knowledge. Cost, system requirements, and inherent features of each program were compared. A novel concept selection tool, a decision matrix, was used to objectify comparisons of usability of the interface, quality of the output, and efficiency of the tools. Findings indicate that Mimics was the best‐suited program for construction of 3D anatomical models and morphometric analysis, but for creating a learning tool the results were less clear. OsiriX was very user‐friendly; however, it had limited capabilities. Conversely, although Amira had endless potential and could create complex dynamic videos, it had a challenging interface. These results provide a resource for morphometric researchers and educators to assist the selection of appropriate reconstruction programs when starting a new 3D modeling project. Anat Sci Educ 6: 393–403. © 2013 American Association of Anatomists.     

Collaborative Scholarship in Academic Library Literature: Who,What, and When

Academic librarianship is very much concerned with the scholarship of others, but what do we know about the scholarship of librarians? This empirical study examines the relationship between author demographics, article topic, and, in particular, faculty and librarian authorship collaboration in the academic library literature. Extensive data collection facilitated the analysis of trends, correlations, and frequencies. Significant findings were found regarding the number of authors, article type, and paper topic in the context of faculty and librarian authorship collaboration.     

British Media Works

DYNAMICS OF THE BRITISH PRESS, 1961–1984: PATTERNS OF CIRCULATION AND COVER PRICES by Harry Henry (NTC Publications, Symot House, 22 Reading Rd., Henley-on-Thames, Oxon RG9 1AG, 1986, 178 pp.—L40, paper, no ISBN)

STRIKES AND THE MEDIA: COMMUNICATION AND CONFLICT by Nicholas Jones (Oxford: Blackwell, 1986, 220 pp.—L17.50, ISBN 0-631-14697-0)

LEARNING THE MEDIA: AN INTRODUCTION TO MEDIA TEACHING by Manuel Alvarado, et al. (Basingstoke: Macmillan Educational, 1987, 306 pp.—L25, ISBN 0-333-30522-1)

POWER WITHOUT RESPONSIBILITY: THE PRESS AND BROADCASTING IN BRITAIN by James Curran and Jean Season (London: Routledge, 1988, 372 pp. price not given, paper, ISBN 0-415-00653-8)

IMAGES INCORPORATED: ADVERTISING AS INDUSTRY AND IDEOLOGY by John Sinclair (London: Croom Helm, 1987, 214 pp.—L9, paper, no ISBN given)

NOISE: THE POLITICAL ECONOMY OF MUSIC by Jacques Attali (Manchester: Manchester University Press, 1985, 180 pp.—L7.50, paper, no ISBN given)

POLICING DESIRE: PORNOGRAPHY, AIDS AND THE MEDIA by Simon Watney (London: Comedia, 1987, 160 pp—L7, paper, no ISBN given)

BEHIND AND IN FRONT OF THE SCREEN: TELEVISION'S INVOLVEMENT WITH FAMILY LIFE by Barrie Gunter and Michael Svennevig (London: John Libbey, 1987, 98 pp.—L9.50, paper, no ISBN given)

TELEVISION AND SOCIAL CONTROL by Mallory Wober and Barrie Gunter (Aldershot: Gower, 1988, 274 pp.—L25, ISBN 0-566-00764-9)

VIOLENCE ON TELEVISION: WHAT THE VIEWERS THINK by Barrie Gunter and Mallory Wober (London: John Libbey & Co. Ltd., 1988, 74 pp.—L9.50, paper, ISBN 0-86196-172-2)

SEX, CLASS AND REALISM: BRITISH CINEMA, 1956–1963 by John Hill (London: British Film Institute, 1986, 228 pp.—L7.95, paper, ISBN 0-85170-133-7)

BOND AND BEYOND: THE POLITICAL CAREER OF A POPULAR HERO by Tony Bennett and Janet Woollacott (Basingstoke: Macmillan Educational, 1987, 316 pp.—L6.95, paper, ISBN 0-333-28621-9)

CINEMA, LITERATURE & SOCIETY: ELITE AND MASS CULTURE IN INTERWAR BRITAIN by Peter Miles and Malcolm Smith (London: Croom Helm, 1987, 271 pp.—L25, no ISBN given)

NATIONAL BROADCASTING UNDER SEIGE: A COMPARATIVE STUDY OF AUSTRALIA, BRITAIN, ISRAEL, AND WEST GERMANY by Eva Etzioni-Halevy (Basingstoke: Macmillan Press, 1987, 228 pp. price and ISBN not given)

THE UN, UNESCO, AND THE POLITICS OF KNOWLEDGE by Clare Wells (London: Macmillan, 1987, 282 pp., L29.50, no ISBN given)

WORLD NEWSPAPER INDUSTRY by Peter J.S. Dunnett (Beckenham: Croom Helm, 1988, 276 pp.—L30, ISBN 0-07099-0834-2)

TRUTH BETRAYED by W. J. West (London: Gerald Duckworth, 1987, 262 pp.—L13, ISBN 0-7156-2182-3)

COMMUNICATIONS SATELITES: THE TECHNOLOGY OF SPACE COMMUNICATIONS by Larry Blonstein (London: Wm. Heinemann, 1987, 162 pp.—L12.95, paper, ISBN 0-434-90153-9)

EDUCATION ON DIRECT BROADCAST SATELLITES IN EUROPE: REPORT TO THE EUROPEAN SPACE AGENCY by George Wedell, et al. (Manchester: The European Institute for the Media, 1987, 148 pp. price and ISBN not given, paper)

THE QUESTION OF ARTIFICIAL INTELLIGENCE edited by Brian P. Bloomfield (Beckenham: Croom Helm, 1987, 286 pp.—L25, no ISBN given)

COMPUTER GRAPHICS AND APLICATIONS by Dennis Harris (New York and London: Chapman & Hall, 1984, 174 pp.—L21.00, paper, no ISBN given)

HOME IS WHERE THE HEART IS: STUDIES IN MELODRAMA AND THE WOMEN'S FILM edited by Christine Gledhill (London: British Film Insitute, 1987, 366 pp.—L7, paper, no ISBN given)

BOXED IN: WOMEN AND TELEVISION by Helen Baehr and Gillian Dyer (London and New York: Pandora Press, 1987, 234 pp.—L8, paper, no ISBN given)

A WOMAN'S GUIDE TO JOBS IN FILM AND TELEVISION by Ann Ross Muir (London and New York: Pandora Press, 1987, 342 pp.—L7, paper, no ISBN given)

G.C.H.Q.: THE SECRET WIRELESS WAR, 1900–1986 by Nigel West (London: Coronet Books, 1987, 400 pp. L3.95, paper, ISBN 0-340-41197-X)

2MT WRITTLE: THE BIRTH OF BRITISH BROADCASTING by Tim Wander (Capella Publications, Stowmarket, Suffolk, UK, 1988, 179 pp.—L12.95, ISBN 0-946443-10-6)

THE LAST DAYS OF THE BEEB by Michael Leapman (London: Coronet Books, 1987, 381 pp.—L3.50, paper, ISBN 0-340-41107-4)

THE ECONOMICS OF TELEVISION: THE UK CASE by Richard Collins, et al. (London/Beverly Hills, CA: Sage, 1988, 136 pp.—$29.95, ISBN 0-8039-8112-0)     

A Conversation with Leslie Weir

Leslie Weir talks about her career in librarianship, librarianship in general, and the development and governance of consortia, portals, digital initiatives, and open access in Canada. She discusses, among other things, CARL, Scholars Portal, OCUL-IR, CRKN, and Canadiana.org. in light of access to electronic resources.     

The relationship between student communication motives and perceived instructor communicator style

The purpose of this study was to examine the relationship between student communication motives (i.e., relational, functional, participatory, excuse‐making, sycophantic) and perceived instructor communicator style (i.e., friendly, impression leaving, relaxed, contentious, attentive, precise, animated, dramatic, open, dominant). Participants were 228 undergraduate students enrolled in a variety of communication courses at a small Midwestern university. Results indicate that (a) the perceived instructor communicator style attributes of impression leaving, friendly, and contentious predict student use of the relational motive, (b) the attribute of friendly predicts student use of the functional motive, (c) the attributes of animated, contentious, and friendly predict student use of the participatory motive, (d) the attributes of attentive and contentious predict student use of the excuse‐making motive, and (e) the attributes of contentious and friendly predict student use of the sycophantic motive.