What We're Learning

We are committed to sharing the results of our grantmaking and the lessons we learn as we carry out our work. We believe it is important to evaluate and reflect regularly, study the findings of research and reports generated with our support, and communicate the results with those in the field and with the public.Read more about our learning philosophy

Now Showing Type: Research and Results

Neuroscience Could Reveal Criminal Intent

Researchers at Vanderbilt, Virginia Tech, and Yale universities have discovered that brain scans can identify differences between criminal intent and reckless behavior, in a study supported by the MacArthur Foundation Research Network on Law and Neuroscience. More

Assessing Perceptions of Local Justice Systems

A nationwide poll on perceptions of jails and local criminal justice systems reveals that the majority of Americans believe the role of jails should not be to punish, and shows broad support for treatment and rehabilitation. More

Mass Incarceration by the Numbers

Correctional facilities in the United States confine 2.3 million people, according to a report from the Prison Policy Initiative that seeks to provide clarity about the nation’s systems of confinement More

Assessing Maternal Mortality in India

A report by Sahayog, a MacArthur grantee, documents the stories of women in marginalized communities across India who did not survive pregnancy. More

Reviewing Abortion Laws in India

A report by Ipas takes an in-depth look at India’s Medical Termination of Pregnancy Act and related laws, which govern abortion services. More

High-tech Maps of Forest Diversity Identify New Conservation Targets

Remote sensing maps of the forest canopy in Peru are testing the strength of current forest protections and identifying new regions for conservation efforts, according to a report by the Carnegie Airborne Observatory. More

Civic Federation Plan to Address Illinois Financial Crisis

A Civic Federation report proposes a five-year plan to address the State of Illinois’ ongoing financial crisis and budget impasse. More

Cyber-espionage Targets Public Health Advocates in Mexico

A report by the University of Toronto’s Citizen Lab, recipient of the MacArthur Award for Creative and Effective Institutions, describes a cyber-espionage operation targeting public health advocates in Mexico. More

Following the Money of Mass Incarceration

The U.S. system of mass incarceration costs the government and families of justice-involved people at least $182 billion every year, according to a report from the Prison Policy Initiative. More

How States Stack Up in Evidence-Based Policymaking

Connecticut, Washington, Utah, Minnesota, and Oregon lead the nation in evidence-based policymaking, according to a report from the Pew-MacArthur Results First Initiative. More