An ambitious anti-crime program called “CeaseFire” just released study results on its effectiveness in inner-city Baltimore and Chicago. The program is based on the idea that killing is a disease psychologically transmitted from one person to another, particularly in economically deprived areas.
The program employs a unique psychological angle, in that it chiefly targets potential retaliators of violence rather than all potential perpetrators of violence. An epidemiological analogy might be a program that targets potential re-transmitters of HIV instead of a much broader population.
Outreach specialists (called “violence disruptors”) are trained to use social norm pressure to target those most likely to retaliate for violence committed against them or others close to them — as if stopping the transmission of a disease before it reaches the next host. While that’s happening, other outreach specialists work on communicating the message in schools that retaliation isn’t “cool,” thus building a climate of social norm pressure against retaliatory violence. The program also recruits reformed violent criminals to communicate the anti-violence message.
The results of the three-year study are impressive:
– Shootings and killings dropped between 41 and 73% in Baltimore and Chicago. Of that, study authors claim that 17-35% is attributable to CeaseFire alone
– Retaliated murders dropped 100% in 5 of 8 communities
– Overall violence was statistically reduced in every community
Evaluating effectiveness of programs like this is notoriously difficult. For example, murder rates in Chicago have been falling overall since the 1990s. It’s a massive research challenge to tease apart the drop in violence percentage attributable to the program versus what would have occurred anyway. No surprise then that CeaseFire has has its share of detractors (not the least of which is the National Rifle Association).
But, the underlying theory is sound: changing social norms is a powerful way to change behavior. The reason, as discussed in a study in the journal Neuron, is that there appears to be a neural network in the brain associated with social norm compliance. Strong messaging–including messages about punishment–activates this network to varying degrees, resulting in particular behavioral responses. It would seem that CeaseFire has been successful in communicating messages that tap into this neural apparatus, eliciting genuine behavior change.
Moving forward, I wonder if this approach can be systematized to work in any given city — sort of an anti-violence social norming franchise. As with most public initiatives, I’m sure it’ll be a question of resources and will; the science seems to be in place.
For more information, link to the New Scientist article about the program.
David DiSalvo is a freelance writer and research wonk who has written and lectured on topics involving public health, air and water quality, branding, education, energy efficiency, healthcare and social marketing. More info 
4 Comments
July 7, 2009 at 12:25 am
[...] This post was Twitted by DavidDiSalvo [...]
July 7, 2009 at 11:09 am
[...] Can kids be immunized to violence? — some data imply yes — but data here is notoriously difficult to [...]
July 14, 2009 at 4:35 pm
[...] Contagion: Social Norm Psychology is a Potent Anti-violence Vaccine. More mimetic theory at work. David DiSalvo reports on Cease-Fire, an ambitious program used in [...]
July 15, 2009 at 4:55 pm
[...] Neuronarrative CeaseFire Evaluation Report Newscientist Lingnende indlæg:Behandling af farlige personer med svære personlighedsforstyrrelserForbindelsen mellem social udstødelse og aggressiv adfærd forklaret ved ny forskningUnge lovovertræderes sundhed er kritisk for succesfuld rehabiliteringEnkeltpersoner med genetisk risiko for at udvikle psykiske lidelser har også mest gavn af et positivt miljøRet og PligtShare this on del.icio.usDigg this!Share this on RedditBuzz up!Stumble upon something good? Share it on StumbleUponShare this on FacebookEmail this to a friend?Share this on LinkedinAdd this to Google Bookmarks [...]