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Home > Press > Survey Finds Emotional Reactions to Nanotechnology:U.S. Attitudes Could Divide Like Those on Nuclear Power and Global Warming

"The U.S. public's perception of nanotechnology is up for grabs. It could divide along the lines of nuclear power, global warming and other contentious environmental issues absent a major public education and engagement effort by industry, government, civic groups and scientists. People who know little or nothing about ‘nanotechnology' instantly react in an emotionally charged way to the concept, and their opinions divide along cultural lines as they learn more about it," according to Dan M. Kahan, the Elizabeth K. Dollard Professor at Yale Law School.

Survey Finds Emotional Reactions to Nanotechnology:U.S. Attitudes Could Divide Like Those on Nuclear Power and Global Warming

Washington, DC | Posted on March 7th, 2007

His conclusions are based on the findings of a new web-based public opinion survey of U.S. public perceptions of nanotechnology. "Essentially, when asked what they think about this new technology, Americans go with their gut instinct—which usually reflects their views toward other issues like climate change and nuclear power. When they learn more, they tend to adopt a stance about nanotechnology that fits their political and cultural predispositions," said Kahan, one of the principal investigators in the study.

"Nothing in our findings suggests that public polarization over nanotechnology is inevitable," noted Don Braman, a professor at The George Washington University. "Our results indicate that another outcome is possible but unlikely unless government, business, and educators take a more proactive approach to nanotechnology public engagement and communication. How people learn about nanotechnologies, from whom, and with what message, will be critical to public perceptions in the future."

The results from this study of 1,800 persons who were recruited to participate in an online survey experiment were released today by the Project on Emerging Nanotechnologies at the Woodrow Wilson International Center for Scholars. The research was conducted by The Cultural Cognition Project—an interdisciplinary team of top experts from Yale University, the University of Washington, The George Washington University, and Decision Research.

The study produced two major findings. The first is that "affect," or emotion, plays a major role in people's perceptions toward nanotechnology. According to Paul Slovic, a professor of psychology at the University of Oregon and president of Decision Research, "individuals' visceral reactions to nanotechnology play a bigger role in their perception of its risks and benefits than any other factor." "This is perfectly consistent," Slovic said, "with research on how people form opinions on complicated issues involving environmental and technological risks."

The second major finding of the study is that individuals' values determine their reaction to information about nanotechnology. "We exposed one group of subjects to information about the benefits and risks of nanotechnology, and we compared their views to those subjects who did not receive such information," explained Kahan.

"We found that when people who hold largely ‘individualistic' values—and who tend to dismiss claims that commerce and industry are dangerous and need regulation—receive information about nanotechnology, they tend to focus on the benefits. When those who hold ‘egalitarian' and ‘communitarian' values—and who are relatively more community-oriented and sensitive to environmental and technological risks—get the same information, they focus on the risks."

"Social psychologists call this a polarization effect," Kahan said. The study showed that political liberals and conservatives polarize, too, when exposed to information about nanotechnology. Differences also emerged between whites and African Americans.

"Based on our results, it is fair to anticipate that as nanotechnology assumes a higher profile in the media and public imagination, people's attitudes may divide along the same lines that nuclear power or climate change have," said John Gastil, professor at the University of Washington. Gastil indicated that the Cultural Cognition Project team plans to engage in future research on ways to communicate about nanotechnology that doesn't polarize people.

The study also confirmed a major finding of an earlier poll conducted by Hart Research that Americans remain largely unaware of nanotechnology—despite government and industry investments of $10 billion annually in nanotechnology research and development. The new survey found that over 80 percent of U.S. respondents had heard "little" or "nothing at all" about nanotechnology.

Nevertheless, the vast majority of subjects—more than 90 percent—held an opinion about whether nanotechnology's benefits would outweigh its risks, even when supplied with no additional information.

"When it comes to nanotechnology, the American public is probably like people from Missouri—the ‘Show Me' State," according to David Rejeski, director of the Project on Emerging Nanotechnologies. "They have to be convinced that the benefits of this new technology—with its valuable applications in medicine, the environment, and energy production—will outweigh its risks. This survey indicates that just providing the public with factual scientific information about nanotechnology will not guarantee popular acceptance and support. The window of opportunity for reaching out to the public about nanotechnology—before polarization occurs—is closing fast. The current government strategy for educating and engaging the public is weak, and industry strategies are almost nonexistent," said Rejeski.

This study was supported by the National Science Foundation, the Oscar M. Ruebhausen Fund at Yale Law School, and the Project on Emerging Nanotechnologies.

About Nanotechnology

Nanotechnology is the ability to measure, see, manipulate and manufacture things usually between 1 and 100 nanometers. A nanometer is one billionth of a meter; a human hair is roughly 100,000 nanometers wide. More than $30 billion in products incorporating nanotechnology were sold globally in 2005. By 2014, Lux Research estimates this figure will grow to $2.6 trillion.


About The Project on Emerging Nanotechnologies
The Project on Emerging Nanotechnologies is an initiative launched by the Woodrow Wilson International Center for Scholars and The Pew Charitable Trusts in 2005. It is dedicated to helping business, government and the public anticipate and manage possible health and environmental implications of nanotechnology. For more information about the project, log on to

The Pew Charitable Trusts is a national charitable organization serving the public interest by informing the public, advancing policy solutions and supporting civic life. Based in Philadelphia, with an office in Washington, D.C., the Trusts will invest $248 million in fiscal year 2007 to provide organizations with fact-based research and practical solutions for challenging issues.

The Woodrow Wilson International Center for Scholars is the living, national memorial to President Wilson established by Congress in 1968 and headquartered in Washington, D.C. The Center establishes and maintains a neutral forum for free, open, and informed dialogue. It is a nonpartisan institution, supported by public and private funds and engaged in the study of national and international affairs.

For more information, please click here

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