About

I am a Senior Researcher for the SCALE Initiative at Stanford University, affiliated with the GenAI in Education Hub and the National Student Support Accelerator.

My research applies natural language processing and causal inference to investigate effective practices in personalized instruction — developing tools that increase student engagement and learning.

Recent

News

Peer-reviewed

Publications

Adjusted vs. observed accuracy differences across countries

Journal of Educational Measurement · 2024

Differences in Time Usage as a Competing Hypothesis for Observed Group Differences in Accuracy, with an Application to Gender Differences in PISA Data

Kapoor, R., Fahle, E., Kanopka, K., Klinowski, D., Ribeiro, A. T., & Domingue, B. W.

PDF ↗Journal ↗
Fixed vs. growth mindset prevalence by family income bracket

Journal of Research on Adolescence · 2024

Measuring Student Mindsets at Scale in Resource-Constrained Settings: A Toolkit with an Application to Brazil During the Pandemic

Lichand, G., Ash, E., Arold, B., Gudino, J., Doria, C. A., Trindade Ribeiro, A., Bettinger, E., & Yeager, D.

PDF ↗Journal ↗

In progress

Working Papers

Average weekly platform minutes, treatment vs. control

EdWorkingPaper · 2026

Access Is Not Enough: Human Support Improves Engagement with AI Tutoring

Robinson, C. D., Gormley, D., Ribeiro, A. T., & Loeb, S.

Paper (PDF) ↗
Tutor CoPilot front-end interface and back-end system

EdWorkingPaper · 2024

Tutor CoPilot: A Human–AI Approach for Scaling Real-Time Expertise

Wang, R. E., Ribeiro, A. T., Robinson, C. D., Loeb, S., & Demszky, D.

Paper (PDF) ↗Media coverage ↓
Individual attention allocation by student achievement

EdWorkingPaper · 2025

How Tutors Share or Split Attention Across Students in Small-Group Tutoring

Zhang, Q., Wang, R. E., Ribeiro, A. T., Loeb, S., & Demszky, D.

Paper (PDF) ↗
Disruption frequency: overall composition and by group size

EdWorkingPaper · 2025

Understanding Disruptions to Virtual Learning: Causes of and Variation in Lost Instructional Time

Beberman, X., Novicoff, S., Ribeiro, A. T., Robinson, C., & Loeb, S.

Paper (PDF) ↗
Other works (drafts in preparation)Show fewer
Engagement RCT

Working paper · Draft coming soon

Enhancing Student Engagement in Virtual Math Tutoring Sessions: A Randomized Trial of a Tutoring Intervention

Strouse, E., Ribeiro, A. T., Robinson, C. D., & Loeb, S.

Draft coming soon
Test-taking behavior

Working paper · Job market paper

About Time: How Gender Differences in Test-Taking Behavior Explain the Gender Gap in Performance

Ribeiro, A. T.

Draft coming soon
Mindset & challenge

Working paper

Can a Growth Mindset Intervention Reduce the Gender Gap in Challenge-Seeking Behavior and Competitiveness?

Ribeiro, A. T.

Draft coming soon
Long-term outcomes

Working paper

Long-Term Outcomes of Affirmative Action: Evidence from a Selective Law School

Estevan, F., & Ribeiro, A. T.

Draft coming soon

Early-stage

Work in Progress

  • Moving Past Human Labels: Best Practices for Annotating Conversational Data

    Bernado, J., Ribeiro, A. T., Beberman, X., & Loeb, S.

    SCALE Initiative, Stanford University

  • Identifying Effective Tutoring Strategies Through NLP Analysis of High- and Low-Value-Added Tutors

    Ribeiro, A. T., Beberman, X., Robinson, C. D., & Loeb, S.

    SCALE Initiative, Stanford University

  • Practicing How to Teach with AI: Do Simulated Tutoring Sessions Improve Tutor Instructional Skills?

    Yoo, P., Ribeiro, A. T., Robinson, C., & Loeb, S.

    SCALE Initiative, Stanford University

In the press

Media Coverage

Access Is Not Enough: Human Support Improves Engagement with AI Tutoring has been featured in:

The 74K-12 Dive

Tutor CoPilot: A Human–AI Approach for Scaling Real-Time Expertise has been featured in:

Economic Report of the President 2025MIT Technology ReviewEducation WeekThe 74K-12 DiveMarkTechPostDan Meyer’s blogAI for EducationStanford Accelerator for Learning