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The Psychology-Logic Overlap
G. B. Keene
Behavior and Philosophy
Vol. 23, No. 2 (Summer, 1995), pp. 57-62
Published by: Cambridge Center for Behavioral Studies (CCBS)
Stable URL: http://www.jstor.org/stable/27759328
Page Count: 6
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The argument of this paper rests on the distinction between two types of what are, loosely speaking, logical claims: A general (speaker-independent) claim that some favoured principle of inference is both truth-preserving, and consistent with certain others. A claim by a particular speaker that he/she has reasonable deductive grounds for concluding that some particular statement is true. The first is a matter of pure logic—a question of what (allegedly) follows from what. The second is a matter of epistemic logic—a question of whether someone has, or more generally, whether there are, reasonable deductive grounds for concluding that something is the case. I shall argue that this distinction has a crucial bearing on the disagreement between classical logicians and non-classical logicians, which is essentially a disagreement about inferential behaviour. The argument is laid out in a manner designed to maximise the chances of any errors being detected. The paper concludes with some considerations of the relevance of relevant logic to the psychologist investigating inference behaviour.
Behavior and Philosophy © 1995 Cambridge Center for Behavioral Studies (CCBS)