"The" interpretation(s) of conditionals.
Recent studies indicate that a vast majority of people judge the probability of a conditional <if A then C> as equivalent to the conditional probability of <A, given C>. This means that in evaluating the applicability of a conditional people do not seem to take into account situations in which the antecedent <A> is false. This has been taken as evidence against the model theory of Johnson-Laird and Byrne (2002). This theory, however, claims that the conditional interpretation in which false-antecedent cases are relevant is only one of many possible interpretations of "if." We present new evidence that confirms this flexibility of the interpretive system. When people are primed by thinking (1) about truth and the difference between the <if A then C> and <if A then possibly C> or (2) are invited to judge which situations are consistent with the conditional, they are more likely to select a probability estimate that takes into account the false-antecedent cases.
Laboratory of Experimental Psychology, University of Gent, Belgium. walter.schroyens@ugent.be
Walter
W
Schroyens
Walter
W
Schaeken
Kristien
K
Dieussaert
D003627:Data Interpretation, Statistical; D006801:Humans; D008128:Logic; D008960:Models, Psychological; D011340:Problem Solving