The repertory grid method was used to determine what terminology respondents use to distinguish between different applications of genetic engineering drawn from food- related, agricultural, and medical applications. Respondents were asked to react to fifteen applications phrased in general terms, and results compared with a second study where fifteen more specific applications were used as stimuli. Both sets of data were submitted to generalized Procrustes analysis. Applications associated with animals or human genetic material were described as causing ethical concern, being (...) unnatural, harmful, and dangerous. Those involving plants or microorganisms were described as beneficial, progressive, and necessary. The results were validated in survey research, which indicated that general applications ofgenetic engineering were perceived as either positive or negative, whereas specific applications were more highly differentiated in perceptual terms. The results imply that the public debate about genetic engineering must take due account of the complexity of public concerns. (shrink)

Source credibility has been thought to bean important determinant of peoples‘ reactions toinformation about technology. There has also been muchdebate about the need to communicate effectively withthe public about genetic engineering, particularlywithin the context of food production. Questionnaireswere used to investigate the impact of sourcecredibility, admission of risk uncertainty, andinitial attitude towards genetic engineering onattitudes of respondents after information provision.120 respondents with positive attitudes towardsgenetic engineering in food production were providedwith persuasive information about the technology,where both source attribution and admission (...) of riskuncertainty were systematically varied within theexperimental design. Impact on perceptions of sourcecredibility, informational qualities, and postintervention attitudes were examined, and compared toa second group of respondents who held initiallynegative attitudes towards genetic engineering, andwho had been exposed to similar informationinterventions. As predicted by Social Judgment Theory,initial attitude was found to be an importantdeterminant of post-intervention attitude. However,admission of risk uncertainty was also found to beinfluential in increasing acceptance and reducingrejection of the technology, possibly through thefacilitation of elaborative processing. Contrary toprevious research, prior attitudes had an impact onperceptions of both source credibility andinformational quality. In terms of effectiveinformation provision about genetic engineering, itwas concluded that scientific honesty is the bestpolicy, and that lay understanding of scientificprocess is probably greater than hitherto assumed byexperts. (shrink)

Whilst there has been much debateregarding the importance of public acceptance ofgenetic engineering and its applications, there isevidence to indicate that objections to the technologyare likely to focus on specific applications of thetechnology, rather than genetic engineering per se.Thus it becomes important to examine the extent ofobjections associated with individual applications,rather than to assess public feeling regarding thetechnology overall. Survey data were collected from200 respondents regarding their objections to generalapplications of genetic engineering (where thetangible benefits were not obvious). Similar objectiondata (...) were collected from 200 different respondents,who were presented with specific applications withmore obvious tangible benefits. Overall patterns ofobjection to different applications were identifiedusing a novel method of objection mapping, inconjunction with analysis of variance to identifyindividual differences in the samples. For generalapplications, the results indicate that mostrespondents object less to applications involvingplants and microorganisms than to those involvinganimals or human genetic material. Individualdifferences in objection focus on applicationsinvolving animals or human genetic material, withwomen and those who are very concerned with theenvironment having greatest objections to theseapplications. Individual differences tend to reducewhen specific applications are used as stimuli,although the focus of concern is still on applicationsinvolving animals and human genetic material. However,gender differences were not statistically significant,and those respondents who have high levels ofenvironmental concern are differentiated by increasedobjections to large-scale agricultural applications.It is argued that effective communication regardingthe technology should focus on specific applications,and address issues of environmental impact within thecontext of these applications, if the public is tomake an informed choice regarding their acceptance ofthe products of the technology. (shrink)