Evidence organized by domain.

Tax & Revenue

Compliance, enforcement, and administrative simplification.

5

experiments

3

replicated

Basic Income

Unconditional cash, guaranteed income pilots, and direct transfer programs.

4

experiments

0

replicated

Benefits Enrollment

Take-up of public programs and friction reduction in eligibility systems.

8

experiments

2

replicated

Cash Transfers

Conditional and unconditional income support programs.

5

experiments

2

replicated

Energy & Environment

Conservation, emissions, and behavior change for environmental outcomes.

6

experiments

4

replicated

Education

Schools, class size, curriculum, and learning outcomes.

9

experiments

2

replicated

Early Childhood

Prenatal through age 5 — the highest-return period for public investment.

7

experiments

1

replicated

Libraries

Public library programming, attendance, and community services.

2

experiments

2

replicated

Public Health

Coverage, behavior change, and health system design.

18

experiments

9

replicated

Parks & Public Space

Physical environment, community space, and active living.

2

experiments

0

replicated

Administrative Process

Government service delivery, permit systems, and bureaucratic friction.

6

experiments

1

replicated

Voter Engagement

Turnout, registration, and civic participation.

6

experiments

5

replicated

Housing

Mobility, affordability, eviction prevention, and neighborhood effects.

7

experiments

3

replicated

Public Safety

Crime reduction, policing strategies, and community violence intervention.

21

experiments

11

replicated

Financial Services

Savings, retirement, credit access, and behavioral finance.

9

experiments

3

replicated

Transportation

Congestion, mode-shift, transit demand, and road safety.

5

experiments

3

replicated

International Development

Poverty reduction programs in low- and middle-income countries.

11

experiments

7

replicated