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

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Research Finds Police Officers Less Respectful to African-American Drivers

Police officers are less respectful of African-American motorists during routine traffic stops than they are of white drivers, according to a report by Stanford University researchers, including MacArthur Fellows Jennifer Eberhardt and Daniel Jurafsky. More

Why States Should Focus on Reducing Jail Growth

A report by the Prison Policy Initiative, supported by the Safety and Justice Challenge, assesses the drivers of jail growth, jail growth trends across the country, and the impacts of jails on the U.S. criminal justice system.  More

Identifying Cyberespionage and Disinformation in Russia

Hackers are increasing efforts to steal and manipulate emails from critics of the Russian government, according to a report from Citizen Lab, recipient of the MacArthur Award for Creative and Effective Institutions. More

Enhancing Transparency in the Criminal Justice System

A data portal created by Measures for Justice, a MacArthur grantee, tracks how criminal cases are being handled at the county level from arrest to post-conviction, offering unprecedented transparency into local justice systems. More

Evaluations of the Models for Change Initiative and the National Campaign to Reform State Juvenile Justice Systems

This evaluation reveals insight on two initiatives that influenced juvenile justice policies and outcomes for youth and public safety throughout the country. More

How Policymakers Prioritize Evidence-Based Programs

An issue brief from the Pew-MacArthur Results First Initiative illustrates how policymakers are using legislation to prioritize evidence-based decision-making when it comes to what programs receive funding. More

College Students Offer Policy Ideas

The Roosevelt Institute, recipient of the MacArthur Award for Creative and Effective Institutions, has released 10 Ideas, a journal that elevates top student-generated policy proposals from across the country. More

Survey Finds 62 Percent Global Decline in New Coal Plants

The Sierra Club’s third annual survey of the coal plant pipeline, Boom and Bust 2017, finds a 62 percent drop in new coal plant construction starts globally, including an 85 percent decline in new Chinese coal plant permits. More

Reframing Public Defense

As part of the Safety and Justice Challenge, the National Legal Aid & Defender Association developed a communications toolkit to help defenders better articulate the role the public defender can play in an effective criminal justice system. More

How Silicon Valley Reengineered Journalism

Social media platforms and technology companies are having a greater effect on American journalism than the shift from print to digital, according to a MacArthur-supported report by the Tow Center For Digital Journalism. More