Heuristics structure and pervade formal risk assessment

Area of Science:

• Environmental Science
• Risk Analysis
• Science and Technology Studies

Background:

• Public risk perception often uses heuristics, not reason, potentially influencing policy.
• A technocratic approach to risk regulation emphasizes formal analysis and cost-benefit assessments.

Purpose of the Study:

• To investigate the role of heuristics in formal risk assessment processes.
• To analyze the methods, conventions, and biases within chemicals regulation.

Main Methods:

• Examined two case studies of chemicals regulation.
• Analyzed the heuristics used in formal risk assessment, including data categorization, validity, causal inference, and model selection.

Main Results:

• Formal risk assessment employs its own set of heuristics, similar to public perception.
• These heuristics, while essential for scientific practice, can lead to systematic errors, masked uncertainties, and manipulation.
• Heuristics in risk assessment can be seen as rules for problem definition, data collection, and evidence interpretation.

Conclusions:

• Heuristics are inherent in risk assessment but can become problematic when treated as fixed laws rather than provisional rules.
• Studying risk assessment heuristics offers a new perspective on the methods, conventions, and biases in the field.
• Recognizing these heuristics is crucial for improving the transparency and accuracy of risk regulation.