Samuel Pertl is a doctoral researcher at Stanford Graduate School of Business who specializes in behavioral economics and decision-making. In 2024 he co-authored a landmark study published in Nature Human Behaviour , marking his first peer-reviewed article ( nature.comphys.org ) . This research analyzed survey data from 77,242 people in 74 countries and demonstrated that emotional states do not shape financial choices in a uniform way around the world. In fact, positive mood
