Today is the first day of the annual ATP Conference (Association of Test Publishers). This afternoon I will present a workshop titled, “Strategies and Tactics for Limiting Item Exposure.” We will be exploring innovative ideas for protecting tests and items from theft. It’s easy to understand why test publishers are concerned about test theft. High-quality [...]

When it comes to supporting an allegation of cheating on tests, there is rarely better statistical evidence than having two (or more) tests with identical sets of responses, or identical answers. Having a great interest in this topic, I have read carefully the abstracts of Rice University Honor Council meetings where these types of allegations [...]

There is a children’s game known by various names as “Whisper,” “Secrets,” or “Gossip” where a secret is shared and passed from one player to the next. The last player hearing the secret says it aloud, often with hilarious results. These same distortions happen in the news media, as journalists cite other reports or each [...]

Elf mistress Heloise entered Elvin’s office (Head of Section K) quickly. “For the eighth week in a row, the reject rate from Section K is three times the rate from the previous twelve months,” she said, handing the weekly quality report to Elvin. She continued, “I was so impressed when your section scored higher on [...]

In 1965, Gordon Moore of Intel observed that transistor densities were doubling roughly every 2 years. Since then the exponential nature of faster, smaller and more powerful computational units has continued. Initially, the observation was a remarkable statement of trends. Later, it became an expectation. And, it is now considered an unrelenting challenge for high [...]