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Biomedical subjects

M Spranca

Publications and source records attributed to M Spranca.

2 recordsLinked to original sources

Protected Values

Protected values are those that resist trade-offs with other values, particularly economic values. We propose that such values arise from deontological rules concerning action. People are concerned about their participation in transactions rather than just with the consequences that result. This proposal implies that protected values, defined as those that display trade-off resistance, will also tend to display quantity insensitivity, agent relativity, and moral obligation. People will also tend to experience anger at the thought of making trade-offs, and to engage in denial of the need for trade-offs through wishful thinking. These five properties were correlated with tradeoff resistance (across different values, within subjects) in five studies in which subjects answered several questions about each of several values, or in which they indicated their willingness to pay to prevent some harmful action. These correlations were found even when the subjects could not tell the experimenters which values they were responding to, so they cannot be ascribed entirely to subjects' desire to express commitment. We discuss implications for value measurement and public policy.

Journal Article↗

Omission bias and pertussis vaccination.

BACKGROUND: Several laboratory studies have suggested that many people favor potentially harmful omissions over less harmful acts. The authors studied the role of this omission bias in parents' decisions whether to vaccinate their children against pertussis. METHODS: Two hundred mail surveys were sent to subscribers to a magazine that had published articles favoring and opposing pertussis vaccination. Subjects were asked about their beliefs about the vaccine and the disease, and whether they had vaccinated their own children or planned to, and they were given test items to identify omission bias in their reasoning. RESULTS: One hundred and three subjects (52%) responded to the survey. Respondents who reported they did not or would not allow their children to be vaccinated (n = 43; 41%) were more likely to believe that vaccinating was more dangerous than not vaccinating (p < 0.001). They were also more likely to exhibit omission bias (p = 0.004), holding constant their stated beliefs about the danger of the vaccine. CONCLUSIONS: Omission bias plays a role in decisions not to vaccinate with pertussis vaccine, beyond the role played by belief about the risk of vaccination.

Adult↗