The greatest achievement of the national crime victimization survey was its attempt to "fill the gap between reported and unreported crime".
The NCS was exchanged to the Bureau of Justice Statistics in 1979, where they started to assess the exactness of the overview instrument and the information accumulation process. Following a broad update process, the NCS was renamed the National Crime Victimization Survey in 1991. The best accomplishment of the NCVS lies in its endeavor to fill the gap among announced and unreported wrongdoing, regularly depicted as the dim figure of wrongdoing. The NCVS assembles extra information about wrongdoings carry out ted and gives criminologists a more prominent comprehension of the sorts of violations submitted and characteristics of the people in question.