A relationship was found to exist between attitude toward the conclusion and errors in the judgment of logical validity of syllogisms. After a reasoning test, the 19 subjects were given an attitude test in which they signified whether they agreed or disagreed with the conclusion. More errors in judgments of logical validity of syllogisms were found to belong to the 'agree-invalid' than to the 'agree-valid,' and to the 'disagree-valid' than to the 'disagree-invalid' category. (PsycINFO Database Record (c) 2006 APA, all rights reserved)