What is the concept of zero-risk preference in cognitive biases?

Zero-risk preference is a cognitive bias where individuals prefer to eliminate one specific risk entirely rather than reducing multiple risks simultaneously. This bias was notably discussed by Daniel Kahneman and Amos Tversky, who contributed to the field of behavioral economics. The preference for zero risk can be attributed to the subjective value individuals place on the elimination of a single risk, which can be more psychologically comforting than a general reduction of risk across multiple areas. For example, a person may choose a path that eliminates the risk of a specific danger, even if that path has a higher overall risk, because the certainty of removing one threat is perceived as more valuable.