Jakub Tesař is a lecturer at the Institute of Political Studies at Charles University in Prague. In his Ph.D. project, he examined possible applications of the quantum theory in the Social Science, namely quantum game theory and quantum models of reasoning and decision-making.
The disjunction effect introduced in the famous study by Shafir and Tversky (1992) and confirmed in subsequent studies remains one of the key "anomalies" for the standard model of the Prisoner's Dilemma game. In the last 10 years, a new approach has appeared that explains this effect using quantum probability theory. However, the existing results do not allow for a parameter-free test of these models. This article develops a simple quantum model of the Prisoner's Dilemma game as well as a new experimental design that enables one to test the predictions of this model. The results show the viability of the quantum model and a substantial difference between women's and men's representations of the game.
DetailSocial norms can be understood as the grammar of social interaction. Like grammar in speech, they specify what is acceptable in a given context (Bicchieri in The grammar of society: the nature and dynamics of social norms, Cambridge University Press, New York, 2006). But what are the specific rules that direct human compliance with the norm? This paper presents a quantitative model of self- and the other-perspective interaction based on a ‘quantum model of decision-making’, which can explain some of the ‘fallacies’ of the classical model of strategic choice. By (re)connecting two fields of social science research—norms compliance, and strategic decision-making—we aim to show how the novel quantum approach to the later can advance our understanding of the former. From the cacophony of different quantum models, we distill the minimal structure necessary to account for the known dynamics between the expectations and decisions of an actor. This model was designed for the strategic interaction of two players and successfully tested in the case of the one-shot Prisoners’ Dilemma game. Quantum models offer a new conceptual framework for examining the interaction between self- and other-perspective in the process of social interaction which enables us to specify how social norms influence individual behavior.
DetailSocial norms can be understood as the grammar of social interaction. Like grammar in speech, they specify what is acceptable in a given context. But what are the specific rules that direct human compliance with the norm? This paper presents a quantitative model of self- and the other-perspective interaction based on a ‘quantum model of decision-making,’ which can explain some of the ‘fallacies’ of the classical model of strategic choice.
DetailSocial norms can be understood as the grammar of social interaction. Like grammar in speech, they specify what is acceptable in a given context. But what are the specific rules that direct human compliance with the norm? This paper presents a quantitative model of self- and the other-perspective interaction based on a ‘quantum model of decision-making,’ which can explain some of the ‘fallacies’ of the classical model of strategic choice.
Detail