The book Thinking, Fast and Slow, by Daniel Kahneman, put forward the idea that we reason using not one but two systems, System 1 and System 2, which are fast and slow, respectively. According to Kahneman’s model, we use System 1 when stress is very low or very high and we use System 2 when stress is moderate. Studies that explore how we use these systems for decision-making in various stressful conditions have recently been summarized in a systematic review that asks three questions: What experimental protocols should be used? How should physiological responses to stress be measured? How can physiological measurements be used to represent stress quantitatively? The open access review article, titled “Measurement and Quantification of Stress in the Decision Process: A Model-Based Systematic Review”, was published Sep. 18 in Intelligent Computing, a Science Partner Journal.