Psychology Dictionary of Arguments

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Extensionality, philosophy: (also extensionality principle, extensionality thesis) an attempt to make the language distinct by taking complete sets of denoted objects as the meaning of the referring words. See also extensions, intensions, extensional language, ambiguity, propositional attitudes.
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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

 
Author Concept Summary/Quotes Sources

J.A. Foster on Extensionality - Dictionary of Arguments

I 10
Extensional / Foster: "x is true if p" - intensional "x means that p" - II 9 intensional: indirect speech - extensional: substantive equivalence
I 16
Nonextensionality/ Foster: is not a lifeblood for rich meaning, but a disease that threatens the possibility of a meaning theory. >Meaning theory/Foster.


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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

Foster I
John A. Foster
"Meaning and Truth Theory"
In
Truth and Meaning, G. Evans/J. McDowell, Oxford 1976


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