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Explaining versus describing human decisions: Hilbert space structures in decision theory
No full textDespite the impressive success of quantum structures to model long-standing human judgement and decision puzzles, the quantum cognition research programme still faces challenges about its explanatory power. Indeed, quantum models introduce new parameters, which may fit empirical data without necessarily explaining them. Also, one wonders whether more general non-classical structures are better equipped to model cognitive phenomena. In this paper, we provide a realistic–operational foundation of decision processes using a known decision-making puzzle, the Ellsberg paradox, as a case study. Then, we elaborate a novel representation of the Ellsberg decision situation applying standard quantum correspondence rules which map realistic–operational entities into quantum mathematical terms. This result opens the way towards an independent, foundational, rather than phenomenological, motivation for a general use of quantum Hilbert space structures in human cognition
Applicazioni del Formalismo Quantistico alle Scienze Cognitive
Full text linkIn questo articolo verranno presentati alcuni risultati recenti sull'applicazione del formalismo matematico della meccanica quantistica (QM) ai domini cognitivi e socioeconomici, ottenuti nell'ambito di una decennale collaborazione tra i gruppi di ricerca di Bruxelles e Leicester. In particolare, si mostrerà come il formalismo quantistico in spazi di Hilbert permetta di modellizzare e fornire una spiegazione unitaria per una serie di fenomeni cognitivi complessi, compresi i giudizi e le decisioni in presenza di incertezza, per i quali l'applicazione di formalismi di tipo classico porta invece a risultati paradossali. I risultati presentati in questo articolo supportano un programma di ricerca emergente, noto con il nome di quantum cognition programme, che presuppone l'esistenza di strutture quantistiche in domini non-fisici
Turing Video-based Cognitive Tests to Handle Entangled Concepts
Full text linkWe have proved in both human-based and computer-based tests that natural concepts generally `entangle' when they combine to form complex sentences, violating the rules of classical compositional semantics. In this article, we present the results of an innovative video-based cognitive test on a specific conceptual combination, which significantly violates the Clauser-Horne-Shimony-Holt version of Bell's inequalities (`CHSH inequality'). We also show that collected data can be faithfully modelled within a quantum-theoretic framework elaborated by ourselves and a `strong form of entanglement' occurs between the component concepts. While the video-based test confirms previous empirical results on entanglement in human cognition, our ground-breaking empirical approach surpasses language barriers and eliminates the need for prior knowledge, enabling universal accessibility. Finally, this transformative methodology allows one to unravel the underlying connections that drive our perception of reality. As a matter of fact, we provide a novel explanation for the appearance of entanglement in both physics and cognitive realms
I Fondamenti della Meccanica Quantistica. Analisi Storica e Questioni Aperte - Cesena, 4-9 Ottobre 2004
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