Articles Published by NIJ

Nanoparticles and other subvisible particles potentially present in nearly all trace evidence are often overlooked in forensic investigations. NIJ-supported researchers have characterized several types of particles and developed detection methods.

NIJ-funded research assessing video games designed to reduce sexual assault on campus yielded some positive results, but showed a lack of sustained benefits on key metrics.

Tip lines make possible confidential reporting of threats and problems and may benefit schools beset by safety and crime threats. More studies are needed on their effectiveness, but a new tip line toolkit instructs schools on how they work.

Cold case investigations have revealed that, in many cases, those responsible also are responsible for multiple crimes. Therefore, prioritizing cold case investigations can assist in both resolving crimes and preventing future ones.

Analyzing illicit drugs such as methamphetamine is difficult because the drugs break down when heated in gas chromatographs. Investigators determined that a new method can avoid the heat issue and improve results.

An expert workshop on a hidden hub of crime on the internet identified priority investigative needs, including demystifying the “dark web”, training investigators to identify dark web evidence and activity, and building cross-jurisdictional partnerships.

A program to reduce bullying in elementary schools by providing adult and peer support activities shows limited potential, a randomized controlled trial found – with the caveat that the program faced implementation challenges that affected the results.