But while the numbers show New York City is shifting gears on criminal justice reform, much harder is to establish, the experts said, is whether new policies are causing the drop in crime or whether they are a consequence of it…. Crime numbers have been decreasing for a long time nationwide, and even worldwide, said Jeffrey Butts, a professor who leads the Research and Evaluation Center at John Jay College of Criminal Justice. He has researched the juvenile justice system since the late 1980s. Continue reading JJIE — With Plunging Crime Rate, New York Experts Dreaming Big