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High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
Published on: November 15, 2013
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1L'auteur est professeur titulaire au département d'information et de communication de l'Université Laval (Québec). Jacques de Guise est chercheur associé. Nathalie Lachance et Jean-François Rivard, professionnels de recherche, ont largement contribué à la réalisation de cette étude, financée par une subvention du réseau de télévision TQS au Centre d'études sur les médias de l'Université Laval.
Abstract:
Over the past twenty years, the question of the effects of violence on television has figured prominently in public opinion and hundreds of studies have been devoted to this subject. Many researchers have determined that violence has a negative impact on behaviour. The public, broadcasters and political figures all support the idea of reducing the total amount of violence on television - in particular in shows for children. A thousand programs aired between 1993 and 2001 on major non-specialty television networks in Canada were analyzed: TVA, TQS, as well as CTV and Global, private French and English networks, as well as the English CBC Radio and French Radio-Canada for the public networks. The methodology consists of a classic analysis of content where an act of violence constitutes a unit of analysis. The data collected revealed that the amount of violence has increased regularly since 1993 despite the stated willingness on the part of broadcasters to produce programs with less violence. The total number of violent acts, as well as the number of violent acts per hour, is increasing. Private networks deliver three times more violence than public networks. Researchers have also noted that a high proportion of violence occurs in programs airing before 2100 hours, thereby exposing a large number of children to this violence. Finally, the author would also like to indicate that psychological violence is taking on a more significant role.