This paper presents an in-depth look at semantics and how it has been and continues to be studied in mass communication. The paper notes that modern communication scholars have largely ignored the importance of semantics to mass media research. The paper examines the historical roots of semantics, noting that the 1930s saw the intellectual…

This introduction to a symposium on the status of research in instructional technology discusses the ongoing debate among developmental researchers as to the instructional effectiveness of media. The controversy dates from the publication in 1983 of an article by Richard E. Clark, who presented the position that media do not really contribute to…

Albert Einstein and the Emergency Committee of Atomic Scientists (ECAS) conducted a reform-based public communication campaign for the international control of atomic energy after the Second World War. The Committee raised funds and sought publicity for its proposed solution to the problem of war and the management of peace. Its solution was the…

The emergence of frequency modulation or FM radio signals, which arose from the desire to free broadcasting of static noise common to amplitude modulation or AM, has produced the controversial development of stereo broadcasting. The resulting enhancement of sound quality helped FM pass AM in audience shares in less than two decades. The basic…

Psychographic analysis--combining demographic and attitudinal characteristics into groups and looking at variations in those characteristics--is useful in newspaper research to expand theories of media publics. One effective segmentation strategy (used at Minnesota Opionion Research Incorporated--MORI) is to divide the population into four groups,…

Historically, radio broadcasting has been affected by innovational, social, technological, and economic change. For instance, FM (frequency modulation) radio emerged out of a desire to free broadcasting of static noise common to AM (amplitude modulation) signals. The eventual response by AM was to improve the technology of the signal. The inquiry…

The role pictures and graphics can play in making Telidon, a Canadian home information retrieval videotex service, a viable communications medium is discussed. This report concentrates on contributions of theories of perception and cognition to knowledge of how different kinds of visual images can most effectively be used on Telidon. The issues of…

This report discusses the current state of research into the visual effects of screen layout design, i.e., the arrangement of design elements on a screen. First, two types of design elements are described: technical (those things that engineers work with and that users have little or no control over), and comprehensibility (those elements that a…

Based on an examination of 90 books and journal articles, this paper provides an analysis of the interpretations historians have used in explaining American journalism during the national crises of 1917-1945 (World War I, the Depression, and World War II). The paper concludes that, in general, the historians defined three divergent approaches to…

A review of the current situation regarding the media flow between the United States and Australia shows that the traditional pattern--American content dominating the Australian media--still holds, but that there is evidence of movement by the Australians to establish their own media identity. An analysis of the television ratings for Australia's…

This discussion of agenda setting reviews early theories of mass communication and traces the beginnings of agenda setting theory to the 1968 United States presidential campaign, during which researchers found a high correlation between what the media were saying about issues and what the people thought were important issues. The results of more…

This review identified over 140 media/attitude studies and categorized them according to the type of media and type of attitude investigated. This categorization made it possible to determine if identifiable relationships existed between instructional media and attitudes of viewers. The literature on experiments dealing with three types of…

The purpose of this study was to stimulate scholarly investigation of a conflict systems model for news media and the interaction of sources in the wake of an expose. A search of the literature led to nine tentative axioms that focus attention on systemic conflict of media and sources related to cover-ups and suggested additional theory…

This paper reviews press coverage of events surrounding the 1977 governmental decision to ban fluorocarbons in spray cans in the United States. The research reported focused on the years 1972 to 1978 and involved a count of the number of items published in selected newspapers and magazines or aired on the three major networks' evening news…

Considers how definitions of teaching and learning have informed educational broadcasters' rationales for their work and how these are manifested in the textual strategies of specific programs. A theoretical framework for accounting for the ways educational television seeks to implicate its viewers in the learning process is then developed. (RP)