This test was sent to 245 participants. Each sample set contained a bolt cutter (Item 1) and two padlocks containing questioned toolmarks (Items 2 and 3). Participants were requested to examine these items and report their findings. Data were returned from 202 participants (82% response rate) and are compiled into the following tables: Page 2 Manufacturer's Information 3 Summary Comments 4 Tabl...

This test was sent to 173 participants. Each sample pack consisted of a questioned employment offer letter provided by employer Safe Haven Home Insurance (Q1) and a photocopy of the employment offer letter made by the employee at the time it was signed (K1). Participants were requested to analyze the questioned original letter to determine if the employee's contention that the document is not g...

We present a new approach to program testing which enables the programmer to specify test suites in terms of a versatile query language. Our query language subsumes standard coverage criteria ranging from simple basic block coverage all the way to predicate complete coverage and multiple condition coverage, but also facilitates on-the-fly requests for test suites specific to the code structure,...

Until recently, mutagenicity testing was done on preselected compounds in a manner in which the testing laboratories knew the identity of the substances under test and the "expected" results, i.e., positive for compounds selected because of their carcinogenicity and negative for food additives. There is no completed study in which substances were tested blind using a standardized protocol. Also...