The difficulties in comparing profile variability (a measure of test scatter) are briefly discussed and the limitations of current techniques pointed out. Test scatter is defined as individual variation in test scores between or within various psychological and educational tests. Currently, no statistical technique for the comparison of profile…

This paper demonstrates that an electronic tutoring program can collect data that enables a far more reliable assessment of students' skills than a standard examination. Socratic electronic homework tutor, CyberTutor can integrate effectively instruction and assessment. CyberTutor assessment has about 62 times less variance due to random test…

The University of Iowa has been involved with the development, implementation, and operation of computer-based test-item pools and a test construction and course management system titled IPSIM (Iowa's Item Pool System for Instructional Management), originally devised for a freshman medical course in the Pathology Department of the College of…

The Microcomputer Diagnostic Testing Project (MDTP) was designed to broaden the use of microcomputers in student testing, for elementary and secondary school use, and for a variety of test item formats. MDTP was designed to administer tests, to allow teachers to create or revise tests, to print out test forms when desired, to score tests, to…