The role of the economist is to identify and solve puzzles. Unsolved puzzles seem to crop up more frequently these days or perhaps my ability to solve them has diminished. The purpose of this paper is to set forth selected enigmas in hope that someone (perhaps a briqht, younq mind who fails to...

This study reports the development of a computer assisted testing (CAT) system and the use of this system over the past five years to develop a normative testing tool in an introductory microeconomics theory course. The CAT system is more than a testing tool and can be used to aid in...

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