A study involving 105 sixth-graders examined three aspects of technical adequacy with respect to two general outcome measures in mathematics: the effects of aggregating scores and correcting for random guessing on reliability and validity and the extent to which the measures were sensitive to changes in performance. (Contains references.)…

A study compared the performance of 21 sixth graders receiving Title I services, 13 with learning disabilities, 9 gifted students, and 58 others on a legal knowledge test after a 3-week course in a mainstream setting. The groups differed significantly on declarative knowledge tasks, but not on procedural and conditional knowledge tasks. Results…