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Impact Laboratory

Quantitative
& Qualitative
Methods

Impact & Methods Research Lab — UFRN

We produce rigorous evidence on public policy and economic phenomena, combining causal inference, applied econometrics and qualitative analysis. We also develop indicator tracking systems and analytical reports that transform data to support institutional decision-making.

Researchers
Students & Fellows
Partner Institutions
0+ Active Projects
0 Past Projects
0 Publications
0 Researchers
0 Years of Experience
Approach

Rigorous methods,
applied evidence

We integrate causal inference, qualitative methods and advanced data analysis to produce robust research — and transform it into actionable knowledge for managers, policymakers and institutions.

01 — QUANTI

Quantitative Methods

Advanced econometrics and causal inference to identify causal relationships and measure the impact of public policies with scientific rigor. We work with large national administrative databases (RAIS, INEP, DATASUS, SNIS).

Diff-in-Diff RDD IV Panel Data Machine Learning DEA · Malmquist Experiments
02 — QUALI

Qualitative Methods

Interpretive approaches that capture mechanisms, contexts and perceptions that quantitative data cannot capture. They complement quantitative analysis and add depth to policy recommendations.

Systematic Review Theory of Change Logic Model Interviews Case Study Discourse Analysis Focus Group
03 — DATA

Data Analysis & Visualization

We transform raw data into strategic information. We develop interactive indicator dashboards, structured analytical reports and continuous monitoring systems for managers and institutions — delivering results that guide decisions in real time.

Interactive Dashboards Analytical Reports Strategic Visualization Indicator Monitoring R · Stata · Python
Research Areas

Research Focus

Our projects cover central themes for the economic development of Northeast Brazil and the country as a whole, with a focus on evidence applied to local realities.

Labor Economics

Labor Market and Regional Inequality

Analysis of wage differentials, informality and the impacts of employment policies in Northeast Brazil.

Economics of Education

Returns to Education and Access to Higher Education

Evaluation of educational policies, full-time schooling, UAB, PROUNI, FIES and their effects on social mobility and income.

Health Economics

Impacts of the Public Health System and Coverage

Evaluation of the Family Health Program, impacts of the Mais Médicos Program and socioeconomic determinants of health in the semi-arid region.

Social Policies

Evaluation of Federal Social Programs

Bolsa Família, Auxílio Brasil and other conditional transfers: effects on poverty and consumption.

Regional Development

Northeast Brazil Economy and Convergence

Regional economic dynamics, income convergence and territorial development policies in Northeast Brazil.

Public Finance

Municipal Fiscal Management and Transfers

Impact of constitutional transfers and revenue efficiency through NFC-e on the quality of municipal public services.

Institutional Data Analysis

Indicator Monitoring and Management Reports

Development of continuous tracking systems for educational, health and management indicators — with interactive dashboards and structured analytical reports to support institutional decision-making.

Researchers

The LIMQ team

Full professors, associate researchers and PhD researchers committed to producing rigorous evidence for public policy.

Coordination
Luciano Menezes Bezerra Sampaio
Luciano Menezes Bezerra Sampaio
General Coordinator
PhD in Economics (UFPE/Sorbonne) · Postdoc Illinois · CNPq PQ · Impact Evaluation · Econometrics · DEA
Raquel Menezes Bezerra Sampaio
Raquel Menezes Bezerra Sampaio
Quantitative Methods
PhD in Economics (Toulouse School of Economics) · Policy Evaluation · Econometrics · Industrial Organization · Efficiency
Anne Emília Costa Carvalho
Anne Emília Costa Carvalho
Qualitative Methods
PhD in Business Administration (UFRN) · Policy Evaluation · Literature Review · Theory of Change · Efficiency · External Control
Marcelo de Andrade Lima Maia
Marcelo de Andrade Lima Maia
Data Science
Specialist in Data Science and Artificial Intelligence · MSc student in Business Administration (UFRN)
Associate Researchers
Dayane da Silva Rodrigues de Souza
Dayane da Silva Rodrigues de Souza
Associate Researcher · IFRN
PhD in Business Administration (UFRN) · MSc in Information and Communication Technology applied to Distance Education (UFRPE) · Distance Education · Educational Policy Evaluation · Teacher Training
Galileu Batista de Sousa
Galileu Batista de Sousa
Associate Researcher · IFRN
PhD candidate in Computer Science (Univ. of Coimbra) · MSc in Computer Science (UNICAMP) · Information Security · Digital Forensics
Lucas Fernandes Barbosa
Lucas Fernandes Barbosa
Associate Researcher
PhD candidate in Economics (UFRN) · MSc in Urban and Regional Planning (UFMG) · Food Security · Family Farming
Lucas Martorelli Gondim Luz
Lucas Martorelli Gondim Luz
Associate Researcher · SESAP-RN
PhD in Business Administration (UFRN) · DEA · Primary Health Care · Municipal Efficiency
Roberto José Vieira de Sousa Lima
Roberto José Vieira de Sousa Lima
Associate Researcher · IFRN
PhD in Business Administration (UFRN) · Accounting Sciences · Educational Funding · Fiscal Policies
Students
Amanda Kelle de Sousa
Amanda Kelle de Sousa
PhD Student
PhD student in Economics (UFRN) · MSc in Regional and Urban Economics (URCA) · Educational Policies · Outcome Evaluation
Ana Maria Jerônimo Soares
Ana Maria Jerônimo Soares
PhD Student · IFAL
PhD student in Business Administration (UFRN) · MSc in Business Administration (UFRN) · Affirmative Action · Entrepreneurship · Educational Policies
Augusto Santana Veras de Medeiros
Augusto Santana Veras de Medeiros
PhD Student · IFRN
PhD student in Business Administration (UFRN) · MSc in Economics (UFPB) · BSc in Statistics (UFRN) · Impact Evaluation of Technical Education
Danyelle Mestre de Souza
Danyelle Mestre de Souza
PhD Student
PhD student in Business Administration (UFRN) · MSc in Economics (UFRN) · Labor Market · Informality
Gustavo Rodrigues de Oliveira
Gustavo Rodrigues de Oliveira
PhD Student
PhD student in Business Administration (UFRN) · MSc in Business Administration (UFRN) · Public Administration · Public Policy Evaluation · Wind Energy
Ríchila Sharon Diniz de Aquino
Ríchila Sharon Diniz de Aquino
PhD Student
PhD student in Business Administration (UFRN) · MSc in Business Administration (UFRN) · Health Efficiency · Dynamic DEA
Research Output

Recent Publications

Papers published in peer-reviewed journals, with evidence applied to education, health, public policy and organizational efficiency.

2025
Does municipality size matter? The impact of introducing the electronic consumer invoice (NFC-e)
Lucena, J. P. O.; Sampaio, R. M. B.
Economic Analysis and Policy · Vol. 87, p. 1763–1781  DOI ↗
JIF8.7
SJR1.873
H73
2024
Does the area and learning modality of teacher qualification matter to middle school students' performance in mathematics?
Souza, D. S. R.; Sampaio, L. M. B.; Sampaio, R. M. B.
International Journal of Educational Development · Vol. 109, p. 103085  DOI ↗
JIF2.3
SJR0.984
H77
2024
Relationship between school spending and educational outcomes: A systematic literature review
Lima, R. J. V. S.; Sampaio, L. M. B.; Sampaio, R. M. B.
Archivos Analíticos de Políticas Educativas · Vol. 32, p. 1–28  DOI ↗
JIFn/a
SJR0.381
H42
2023
The impact of regulation on the Brazilian water and sewerage companies' efficiency
Carvalho, A. E. C.; Sampaio, R. M. B.; Sampaio, L. M. B.
Socio-Economic Planning Sciences · Vol. 87, p. 101537  DOI ↗
JIF5.4
SJR1.326
H76
2023
Does student aid make a degree more likely? Evidence of the permanence scholarship program from survival models
Sampaio, L. M. B. et al.
International Journal of Educational Development · Vol. 96, p. 102697  DOI ↗
JIF2.3
SJR0.984
H77
2022
Airlines' cooperation in the US domestic market: Measuring the evolution of price gaps
Sampaio, R. M. B.; Urdanoz, M.
Transportation Research Part A: Policy and Practice · Vol. 166, p. 424–443  DOI ↗
JIF6.4
SJR2.124
H182
2022
Student retention policies in higher education: reflections from a literature review for the Brazilian context
Sampaio, L. M. B. et al.
Revista de Administração Pública · Vol. 56, p. 603–631  DOI ↗
JIF1.1
SJR0.388
H23
2022
The dynamics of informality in Brazil and Argentina (2012–2019) and the vulnerability of the working class
Souza, D. M.; Trovão, C. J. B. M.
Trabalho, Educação e Saúde (Online) · Vol. 20, p. 01–27  DOI ↗
JIF0.4
SJRn/a
Hn/a
2020
Dynamic efficiency of primary education in Brazil: Socioeconomic and infrastructure influence on school performance
Queiroz, M. V. A. B.; Sampaio, R. M. B.; Sampaio, L. M. B.
Socio-Economic Planning Sciences · Vol. 70, p. 100738  DOI ↗
JIF5.4
SJR1.326
H76
Projects & Consulting

Applied Impact

Impact evaluations, consulting for international organizations and applied projects for ministries, agencies and universities — research that informs real-world decisions.

Equidade.Info / Instituto Lemann 2026

Impact of Extreme Heat on Educational Performance in Brazil (4th Call)

Investigates, in a quasi-experimental framework, the impact of extreme climate events (heat, drought, flooding) on reading and writing literacy indicators. Analyzes the mediating role of school attendance and the moderating effect of school infrastructure, using Equidade.Info data across multiple waves (2023–2025). This project continues the 1st Equidade.Info Call, expanding the dataset with subsequent waves and incorporating new analyses from performance variables available in those waves.

Climate and Education Quasi-Experimental School Infrastructure Equity
CNPq (PQ) 2025

Full-Time Education in Brazilian Secondary Schools: Models, Impacts and Equity Challenges

Research that characterizes state models of full-time education in secondary schools by dosage (teaching hours), use (activities) and context (schools, managers and teachers); investigates mechanisms via logic models and theory of change; and evaluates the impacts of different models on student performance, incorporating access equity indicators.

Impact Evaluation Theory of Change Educational Equity Scientific Article
CPA / UFRN 2025

Career Trajectories of UFRN Undergraduates in the Labor Market

Project in partnership with UFRN's Permanent Evaluation Commission (CPA). Tracks professional trajectories of graduates from on-campus undergraduate programs, cross-referencing institutional administrative data with RAIS and Federal Revenue records. Results are delivered through interactive dashboards and analytical reports to support institutional management and self-evaluation processes.

Data Analysis RAIS / Federal Revenue Interactive Dashboards Institutional Self-Evaluation
Funpec / SEINFRA / City of Natal 2025

Environmental Programs for Coastal Erosion Control Works at Ponta Negra Beach

Coordination of the Socioeconomic Environment component in the development and monitoring of environmental programs for coastal erosion control and beach nourishment works at Ponta Negra Beach. Covers six programs: Environmental Education, Socioeconomic Indicator Monitoring, Worker Support, Social Assistance, Cultural Incentive and Strengthening, and Integrated Social Communication.

Socioeconomic Environment Environmental Programs Environmental Licensing Indicator Monitoring
Ministry of Science, Technology and Innovation / CGEE 2025

Methodology for Social Impact Evaluation of ST&I Policies in the Humanities and Social Sciences

Development of a methodological framework for evaluating the social impact of Science, Technology and Innovation policies, including applicability testing of the methodology in SEPPE/MCTI pilot programs.

Impact Evaluation Methodological Framework ST&I Technical Report
SEDIS / UFRN 2025

Career Trajectories of UFRN Distance Education Graduates

Tracking the professional trajectories of graduates from SEDIS/UFRN's distance education programs, cross-referencing institutional administrative data with RAIS and Federal Revenue records. Delivered through interactive dashboards and analytical reports to support distance education management at the university.

Data Analysis RAIS / Federal Revenue Interactive Dashboards Analytical Report
SEDIS / UFRN 2025

Dropout Analysis in UFRN Distance Education Programs

Econometric modeling of the determinants of dropout in distance undergraduate programs offered by SEDIS/UFRN. Uses institutional administrative data and machine learning techniques to identify risk profiles and inform retention policies in distance education.

Econometrics Machine Learning Interactive Dashboards Technical Note
UNESCO / MCTI 2024

Access and Retention of Young People in Brazilian Higher Education

Study using INEP and PNADC microdata on higher education access policies, with a survey of ~10,000 secondary school graduates and content analysis of state education plans.

Impact Evaluation Literature Review Survey Final Report
Equidade.Info / Instituto Lemann 2025 · Completed

Full-Time Education Models in Brazilian Secondary Schools: Equity, Mechanisms and Impact (3rd Call)

Analysis of full-time education policy across three dimensions — dosage, use and context — estimating the probability of students and teachers being in full-time schools based on socioeconomic characteristics and school network. Includes regressions linking reading (comic strip test) and participation in full-time schooling.

Full-Time Education Educational Equity Linear Probability Models Report
Equidade.Info / Instituto Lemann 2024–2025 · Completed

School Funding and Management: Evidence on Equity in Educational Outcomes in Brazil (2nd Call)

Analysis of the influence of educational funding and school management on student outcome inequality. Used Fundeb data as an exogenous event to compare municipalities with significant positive and negative balances, linking per-student spending to reading outcomes (ROAR), cognitive tests (SMARTE) and decision-making (Balloon Test).

Educational Funding Fundeb Equity Report
CNPq / Ministry of Health / PPGA-UFRN 2024 · Completed

Dynamic Efficiency of Brazilian Municipalities and Primary Health Care Units with Demographic and Epidemiological Profiles

Development of a dynamic and network DEA model for Primary Health Care units, incorporating exogenous variables on municipalities' demographic and epidemiological profiles. Data: SISAB and APURASUS, 2017–2021.

Dynamic DEA Primary Health Care Technical Report Scientific Article
Ministry of Citizenship / NuPES-UFMT 2023 · Completed

Analysis of Operational Costs of the Criança Feliz Program

Project "Impact Evaluation of Public Policies" funded by the Ministry of Citizenship, in collaboration with the Center for Economic and Socio-Environmental Research (NuPES) of the Faculty of Economics/UFMT, focusing on the analysis of operational costs of the Criança Feliz Program.

Research Cost Analysis Technical Report
Setur Bahia / IDB 2023 · Completed

Final Evaluation of Prodetur Bahia

Evaluation of the National Tourism Development Program of Bahia (IDB contract) based on Relevance, Efficiency, Effectiveness and Sustainability criteria. Included a logic model, questionnaires with 30+ key stakeholders and field visits to interventions.

Program Evaluation Logic Model Final Report Executive Summary
Fapesq / SEECT PB / LEMA-UFPB 2022 · Completed

Evaluation of the Primeira Chance Program (PB)

Impact evaluation of the internship program for high school students and graduates in Paraíba, with a literature review on determinants of educational performance and econometric analysis of the program's effects.

Impact Evaluation Diff-in-Diff Report
UNDP / Ministry of Economy 2022 · Completed

Impact Evaluation of Enimpacto

Evaluation of the National Strategy for Impact Investments and Businesses: international literature review, development of a logic model with indicators per action, and impact analysis of the 2019 Law for impact businesses in RN.

Impact Evaluation Diff-in-Diff Logic Model Final Report
World Bank 2018 · Completed

Planting Seeds of Empowerment — Productive Inclusion in Northeast Brazil

Impact evaluation consulting for the World Bank on a project to expand women's economic participation through productive inclusion in rural areas of Northeast Brazil.

Impact Evaluation Gender UFGE Final Report
Collaboration Network

Partner Institutions

International organizations, ministries, regulatory agencies and universities that have collaborated with LIMQ on research and impact evaluation projects.

UFRN — Federal University of Rio Grande do Norte
CNPq
UNDP
CONSED
UFMT
World Bank
INEP
ABAR
Funpec
UFPB
Ministry of Health
IDB
Equidade.Info
Instituto Natura
European Union
Ministry of Citizenship
Fapesq
Setur Bahia
Ministry of Economy
City of Natal
Ministry of Science, Technology and Innovation
SEECT-PB
UNESCO
Opportunities

Join LIMQ

We offer undergraduate research fellowships, research internships and positions for collaboration on projects with institutional partners.

Undergraduate

Scientific Initiation Fellowship PIBIC/CNPq

Participate in research projects with direct supervision from PhD professors. Ideal for students of Economics, Statistics and related fields.

Requirements
  • Enrolled in an undergraduate program at UFRN
  • Minimum GPA of 7.0
  • Availability of 20 hours per week
  • Interest in quantitative methods
Apply
Collaboration

Institutional Partnership

Public organizations, NGOs and educational institutions may propose applied research projects in partnership with the laboratory.

How it works
  • Submit request via email
  • Methodological alignment meeting
  • Proposal and timeline development
  • Execution with a dedicated team
Get in Touch

Contact Us

Researchers, students and institutional partners are welcome.

📍
Address
UFRN · CCSA, Room F10, NEPSA II — University Campus
Lagoa Nova, Natal — RN, 59078-970
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Email
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Instagram
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Institutional Affiliations
UFRN · CCSA · PPECO · PPGA · CNPq
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