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TY - GEN ID - cogprints3415 UR - http://cogprints.org/3415/ A1 - Aerts, Diederik A1 - D'Hondt, Ellie A1 - Gabora, Liane Y1 - 2000/10// N2 - The quantum logical `or' is analyzed from a physical perspective. We show that it is the existence of EPR-like correlation states for the quantum mechanical entity under consideration that make it nonequivalent to the classical situation. Specifically, the presence of potentiality in these correlation states gives rise to the quantum deviation from the classical logical `or'. We show how this arises not only in the microworld, but also in macroscopic situations where EPR-like correlation states are present. We investigate how application of this analysis to concepts could alleviate some well known problems in cognitive science. PB - Plenum/Kluwer KW - quantum KW - nondisjunction KW - correlation KW - potential KW - logic KW - concept KW - classical KW - state KW - conjunction KW - negation KW - category KW - pet fish problem TI - Why the Disjunction in Quantum Logic is Not Classical SP - 1473 AV - public EP - 1480 ER -