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The belief that greater understanding leads to more positive attitudes informs many practical initiatives in the public understanding of science. However, there has been comparatively little empirical study of the justification for this belief. This paper explores the relationship between understanding of science and levels of support for science using a national sample of over 2000 British respondents. The analysis indicates that the internal consistency of attitudes towards science is poor, and that the links between attitudes towards science in general and attitudes towards specific areas of scientific research are weak. Understanding of science is weakly related to more positive attitudes in general: but, more significantly, it is also associated with more coherent and more discriminating attitudes. Of particular importance is the finding that while knowledgeable members of the public are more favourably disposed towards science in general, they are less supportive of morally contentious areas of research than are those who are less knowledgeable. Although an informed public opinion is likely to provide a slightly more supportive popular basis for some areas of scientific research, it could serve to constrain research in controversial areas such as human embryology.
Evans et al. (Sun,) studied this question.