Implicit media frames: Automated analysis of public debate on artificial sweeteners

Loet Leydesdorff loet at LEYDESDORFF.NET
Sat Oct 11 07:46:32 EDT 2008

 <> Implicit media
frames: Automated analysis of public debate on artificial sweeteners

Iina Hellsten, James Dawson, & Loet Leydesdorff 

The framing of issues in the mass media plays a crucial role in the public
understanding of science and technology. This article contributes to
research concerned with diachronic analysis of media frames by making an
analytical distinction between implicit and explicit media frames, and by
introducing an automated method for analysing diachronic changes of implicit
frames. In particular, we apply a semantic maps method to a case study on
the newspaper debate about artificial sweeteners, published in The New York
Times (NYT) between 1980 and 2006. Our results show that the analysis of
semantic changes enables us to filter out the dynamics of implicit frames,
and to detect emerging metaphors in public debates. Theoretically, we
discuss the relation between implicit frames in public debates and
codification of information in scientific discourses, and suggest further
avenues for research interested in the automated analysis of frame changes
and trends in public debates. 

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Loet Leydesdorff 
Amsterdam School of Communications Research (ASCoR)
Kloveniersburgwal 48, 1012 CX Amsterdam.
Tel. +31-20-525 6598; fax: +31-842239111
 <mailto:loet at> loet at ;

Visiting Professor 2007-2010,  <>
ISTIC, Beijing; Honorary Fellow 2007-2010,  <>
SPRU, University of Sussex 
Now available:
The Knowledge-Based Economy: Modeled, Measured, Simulated, 385 pp.; US$
The Self-Organization of the Knowledge-Based Society ;
The Challenge of Scientometrics

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