Decades of mass incarceration have proven to be a costly and ineffective strategy to reduce crime, a groundbreaking report published Thursday found.
In fact, increased punishments and jailings have been declining in effectiveness for more than 30 years, according to the report, titled What Caused the Crime Decline? (pdf) and released by the Brennan Center for Justice.
Violent crime rates fell by more than 50 percent between 1991 and 2013, while property crime declined by 46 percent, according to FBI statistics. Yet between 1990 and 2009, the prison population in the U.S. more than doubled, jumping from 771,243 to over 1.6 million. While incarceration may have initially had a positive outcome on the crime rate, it has reached a point of diminishing returns, the researchers said during a press call Thursday.
Mass incarceration is “a tragedy,” writes Nobel Prize winning economist Dr. Joseph Stiglitz in the foreword to the report. “With almost 1 in 100 American adults locked away behind bars, our incarceration rate is the world’s highest… nearly 40 percent of whom are African American. Yet lawmakers are slow to take action and public outrage is largely absent.”
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Inimai Chettiar, director of the Brennan Center’s Justice Program, said Thursday that she hoped the report would “provide a wake-up call for the country regarding our incarceration policy.”
Income growth and an aging population each had a greater effect on the decline in national crime rates than jailings, write the authors, Oliver Roeder, Lauren-Brooke Eisen and Julia Bowling. Likewise, data-based policing techniques such as CompStat, which maps where crime takes place, has helped reduce rates in bigger areas such as New York City, Los Angeles, and Chicago.
Because CompStat relies on empirical data to identify crime, it is particularly effective in comparison with other, more controversial tactics such as broken windows, stop-and-frisk, and “hot spot” policing, which focuses resources on areas where law enforcement says crime is “more likely” to exist.
“It is difficult to study cause and effect of these tactics on a national level because each city and department defines and applies these tactics differently,” the report states.
Declining alcohol consumption and “consumer confidence” also contributed to the crime drop.
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