title: Quantum Bayesianism as the basis of general theory of decision-making.
abstract: We discuss the subjective probability interpretation of the quantum-like approach to decision making and more generally to cognition. Our aim is to adopt the subjective probability interpretation of quantum mechanics, quantum Bayesianism (QBism), to serve quantum-like modelling and applications of quantum probability outside of physics. We analyse the classical and quantum probabilistic schemes of probability update, learning and decision-making and emphasize the role of Jeffrey conditioning and its quantum generalizations. Classically, this type of conditioning and corresponding probability update is based on the formula of total probability-one the basic laws of classical probability theory.
authors.affiliation: International Center for Mathematical Modeling in Physics and Cognitive Sciences, Linnaeus University, Växjö-Kalmar, Sweden andrei.khrennikov@lnu.se.
authors.forename: Andrei
authors.identifier: http://orcid.org/0000-0002-9857-0938
authors.initials: A
authors.lastname: Khrennikov
keywords: Jeffrey conditioning; decision-making; formula of total probability; quantum Bayesianism; quantum-like models; subjective probability