Directionality and temporal factors in conditional reasoning |
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Authors: | J St B T Evans and M A Beck |
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Institution: | (1) Department of Psychology, Plymouth Polytechnic, PL4 8AA Plymouth |
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Abstract: | An experiment is reported which tests psycholinguistic hypotheses about conditional rules of the form ‘If p then q’ (IT) and
‘p only if q’ (OI). It is postulated that each rule has a ‘directionality’ determined by linguistic usage which is ‘forwards’
for IT rules and ‘backwards’ for OI rules. It is further suggested that where temporal relations exist between the events
denoted by p and q, the rules will be understood and processed more rapidly if the directionality of the rule is congruent
with the temporal order. The results supported these hypotheses and provide a useful replication and extension of previous
work. |
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Keywords: | |
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