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Scientific Information Largely Ignored When Forming Opinions About Stem Cell 
Research
ScienceDaily (Jun. 6, 2008) - When forming attitudes about embryonic stem 
cell research, people are influenced by a number of things. But 
understanding science plays a negligible role for many people.
That's the surprising finding from a team of University of Wisconsin-Madison 
communications researchers who have spent the past two years studying public 
attitudes toward embryonic stem cell research. Reporting in the most recent 
issue of the International Journal of Public Opinion, the researchers say 
that scientific knowledge - for many citizens - has an almost negligible 
effect on how favorably people regard the field.
"More knowledge is good - everybody is on the same page about that. But will 
that knowledge necessarily help build support for the science?" says Dietram 
Scheufele, a UW-Madison professor of life sciences communication and one of 
the paper's three authors. "The data show that no, it doesn't. It does for 
some groups, but definitely not for others."
Along with Dominique Brossard, a UW-Madison professor of journalism and mass 
communication, and graduate student Shirley Ho, Scheufele used national 
public opinion research to analyze how public attitudes are formed about 
controversial scientific issues such as nanotechnology and stem cells. What 
they have found again and again is that knowledge is much less important 
than other factors, such as religious values or deference to scientific 
authority.
In the case of stem cells, values turn out to be key, says Scheufele. For 
respondents who reported that religion played a strong role in their lives, 
scientific knowledge had no effect on their attitudes toward stem cell 
research. But for those who claimed to be less religious, understanding the 
science was linked to more positive views of the research.
"Highly religious audiences are different from less religious audiences. 
They are looking for different things, bringing different things to the 
table," explains Scheufele. "It is not about providing religious audiences 
with more scientific information. In fact, many of them are already highly 
informed about stem cell research, so more information makes little 
difference in terms of influencing public support. And that's not good or 
bad. That's just what the data show."
On the other hand, a value system held by a much smaller portion of the 
American public works in just the opposite direction. The attitudes of 
individuals who are deferential to science - who tend to trust scientists 
and their work - are influenced by their level of scientific understanding.
Overall, says Brossard, "more understanding doesn't always change attitudes. 
A lot depends on people's values. And those values need to be considered 
carefully when we communicate with the public about these issues."
Adapted from materials provided by University of Wisconsin-Madison.

Rayilyn Brown
Board Member AZNPF
Arizona Chapter National Parkinson Foundation
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