Describes the design, construction, administration, and results of networked campuswide placement testing for mathematics and chemistry at Stanford University. Reasons for online testing are discussed; software requirements and programing details are explained; and the impact on students and their advisors is considered. (Contains seven…

Four discussions of test construction based on item response theory (IRT) are presented. The first discussion, "Test Design as Model Building in Mathematical Programming" (T. J. J. M. Theunissen), presents test design as a decision process under certainty. A natural way of modeling this process leads to mathematical programming. General…

The difficulty of computer programming and other design tasks is a function of the multiple abstractions that combine to form a program's meaning. Thus, comprehension of the final form of a program design, the program text, involves retrieving multiple sets of relationships between parts. The research presented here addresses which, if any,…

Discussion of the use of microcomputers in education focuses on the use of microcomputers for evaluation purposes. A study that collected performance data on both college students and the evaluation instrument is described, reliability and validity of the test are discussed, and the use of microcomputers to redesign instructional systems is…