An experiment was designed to test the hypothesis that abstract materials increase accuracy in solving categorical syllogisms. In an attempt to encourage subjects to reason their way through the problems rather than to make judgments about the truth or desirability of the proffered conclusions, the premises were composed of familiar words in…

A study continued a series of empirical investigations into the psychological criteria people use to determine whether or not to make particular arguments. Two hundred volunteers enrolled in a required public-speaking course (1) responded to several demographic questions, (2) described the persuasive choices they would make in the scenario…