For the six available sets of empirical data, the discrimination (slope) parameter of the logistic item characteristic curve was found to have a significant positive correlation over items with the difficulty (location) parameter. This unpleasant situation can be eliminated by a suitably chosen transformation of the ability scale. (Author/RC)

A 15-stage pyramidal test and a 40-item two-stage test were constructed and administered by computer to 111 college undergraduates. The two-stage test was found to utilize a smaller proportion of its potential score range than the pyramidal test. Score distributions for both tests were positively skewed but not significantly different from the…

This paper discusses whether or not revisions of the Scholastic Aptitude Test (SAT) and the American College Test (ACT) have created such significant differences between the two tests that a student could conceivably score significantly higher on one than the other. The SAT has been revised to meet the needs of an increasingly diverse student…

Part of the New Canadian Study required the examination of general ability measures. The requisites were that the measure selected be applicable for Grades 5 to 9 and that it could be administered to students with a limited command of English. Included in this report are: (1) a summary of the considerations involved in selecting a general…

Discusses two methods for developing and assessing fluid abilities. In the first method, students are asked to solve increasingly unfamiliar problems in a domain; and in the second, students are required to organize knowledge in new ways or view it from different perspectives. (SLD)

The purposes of this study were to: (1) examine the psychometric properties of the Ball Aptitude Battery (BAB) on a high school freshman sample; (2) develop BAB norms for high school freshmen; (3) develop and evaluate four memory tests and a vocabulary test appropriate for freshmen; (4) examine level and structure differences for the BAB tests…

The Differential Aptitude Test (DAT) is a multiple aptitude battery designed to measure junior and senior high school students' and adults' ability to learn or succeed in certain areas. The test is suitable for group administration and is primarily for use in educational and vocational counseling, although it may be used in employee selection. The…