Summary :
Noise: A Flaw in Human Judgment is a nonfiction book by professors Daniel Kahneman, Olivier Sibony and Cass Sunstein. It was first published on May 18, 2021. The book concerns 'noise' in human judgment and decision-making. The authors define noise in human judgment as "undesirable variability in judgments of the same problem" and focus on the statistical properties and psychological perspectives of the issue.[1] Examples they give include their own finding at an insurance company that the median premiums set by underwriters independently for the same five fictive customers varied by 55%, five times as much as expected by most underwriters and their executives.[2] Another example is that two psychiatrists who independently diagnosed 426 state hospital patients agreed on which mental illness the patient suffered from only in half of the cases[3] and a finding that French court judges were more lenient if it happened to be the defendant's birthday

Copies :