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Quantum Structure in Cognition
We show that quantum mechanical principles, such as superposition and interference, are at the origin of the guppy effect and the overextension and underextension of membership weights of items with respect to the conjunction and disjunction of pairs of concepts. Expand
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Description of many separated physical entities without the paradoxes encountered in quantum mechanics
We show that it is impossible in quantum mechanics to describe two separated physical systems. This is due to the mathematical structure of quantum mechanics. It is possible to give a description ofExpand
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A possible explanation for the probabilities of quantum mechanics
It is shown that a lack of knowledge about the measurements of a physical system gives rise to a nonclassical probability calculus for this physical system. It is also shown that the nonclassicalExpand
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Classical theories and nonclassical theories as special cases of a more general theory
We analyze the difference between classical mechanics and quantum mechanics. We come to the conclusion that this difference can be found in the nature of the observables that are considered for theExpand
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Toward an Ecological Theory of Concepts
This article summarizes the history and current status of concepts research and provides a nontechnical summary of work toward an ecological approach to concepts. Expand
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Foundations of Quantum Physics: A General Realistic and Operational Approach
We present a general formalism with the aim ofdescribing the situation of an entity, how is, how itreacts to experiments, how we can make statistics withit, and how it ‘changes’ under the influence of the rest of the universe. Expand
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A Theory of Concepts and Their Combinations II: A Hilbert Space Representation
We present a numerical mathematical model for the representation of a concept, built with a mathematical formalism originally used in quantum mechanics, and we show that the data of the above mentioned experiment can be reproduced. Expand
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A Theory of Concepts and Their Combinations I: The Structure of the Sets of Contexts and Properties
A theory for modeling concepts that incorporates how a context influences the typicality of an exemplar and the applicability of a single property of a concept. Expand
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Concepts and Their Dynamics: A Quantum-Theoretic Modeling of Human Thought
We analyze different aspects of our quantum modeling approach and, more specifically, focus on the quantum effects of contextuality, interference, entanglement, and emergence, illustrating how each of them makes its appearance in specific situations of the dynamics of human concepts and their combinations. Expand
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