This study examined whether familiarity with content influences performance on conditional reasoning problems of the form P implies Q independently of ease of generation of specific examples of "Q and not-P." Results indicated that increased content familiarity resulted in higher performance levels. (Author/JAZ)

Two studies examined abstract conditional reasoning. Findings indicated an increase in use of formal justifications with grade, and that abstract reasoning was facilitated by realistic context. Findings supported the idea that such reasoning may represent a qualitative change in reasoning abilities and that its development relies on appropriate…