Students were administered either conditional syllogism, biconditional syllogism, or conditional and biconditional syllogism tests. Analyses confirmed a tendency towards biconditionality. With conditional syllogisms, results indicated variations across forms of both major and second premises and a reversed developmental trend on problems which…

The content of 228 college student's writing samples appears to be a main determiner of how many and what types of preposition errors will appear. These results indicate that preposition errors point to cognitive lags and complex, abstract writing tasks may be the appropriate treatment. (Author/PN)

Describes two studies that assessed decision-making skills using common cognitive errors and evaluated the impact of computer-based role-playing exercises on the development of these skills. Results with high school students, undergraduates, and earth science professionals are discussed which indicate that well-designed computer-based laboratories…