Social Change
Social change action with informed and engaged societies
Social Change
After nearly 28 years, The Communication Initiative (The CI) Global is entering a new chapter. Following a period of transition, the global website has been transferred to the University of the Witwatersrand (Wits) in South Africa, where it will be administered by the Social and Behaviour Change Communication Division. Wits' commitment to social change and justice makes it a trusted steward for The CI's legacy and future.
 
Co-founder Victoria Martin is pleased to see this work continue under Wits' leadership. Victoria knows that co-founder Warren Feek (1953–2024) would have felt deep pride in The CI Global's Africa-led direction.
 
We honour the team and partners who sustained The CI for decades. Meanwhile, La Iniciativa de Comunicación (CILA) continues independently at cila.comminitcila.com and is linked with The CI Global site.
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Evidence: Reducing Violence by Transforming Neighborhoods: A Natural Experiment in Medellín, Colombia

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Reducing Violence by Transforming Neighborhoods: A Natural Experiment in Medellín, Colombia

Name(s) of author(s)?:

Magdalena Cerdá, Jeffrey D. Morenoff, Ben B. Hansen, Kimberly J. Tessari Hicks, Luis F. Duque, Alexandra Restrepo, and Ana V. Diez-Roux

Who published this paper, article, book (chapter) or other publication?:

American Journal of Epidemiology, Volume 175, Issue 10, 15 May 2012, Pages 1045–1053

What are the best extracts that highlight the evidence for the impact of a communication for development, social change, behaviour change, public engagement, or informed citizen strategy on a development issue and priority?:

The decline in the homicide rate was 66% greater in intervention neighborhoods than in control neighborhoods (rate ratio = 0.33, 95% confidence interval: 0.18, 0.61), and resident reports of violence decreased 75% more in intervention neighborhoods (odds ratio = 0.25, 95% confidence interval 0.11, 0.67).

To which development issue does this evidence and impact data relate?:

Violence, Health

To which strategic approach(es) does the evidence and impact data relate?:

Transit-oriented development was accompanied by municipal investment in neighborhood infrastructure.

What research methodology (ies) was/were used to produce this evidence and impact data?:

Permutation tests were used to estimate differential change in the outcomes of interest in intervention neighborhoods versus control neighborhoods.

What is the URL to access this paper, article, book (chapter) or other publication?:

https://academic.oup.com/aje/article/175/10/1045/89012

Participating organisations in the Global Alliance for Social and Behaviour Change - Building Informed and Engaged Societies were asked to identify, in their opinion, the 5 most compelling research and evaluation studies that demonstrate the direct impact of this field of work on a major development issue. This was one of the nominees. For the full compiled list, please click here. For the compilation of the key impact data across all research evidence identified, please click here.