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Research

Did you know that completing Unit 5 of Spanish or French is comparable to 4 university semesters of language classes in reading and listening? We’re committed to keeping ourselves accountable for the success of our learners. Learn more about how we measure our efficacy, and other exciting research happening on our team.

January 20, 2023

Keep going! Doing more lessons leads to better learning

by Xiangying Jiang Research
October 17, 2022

How does Duolingo evaluate effectiveness?

by Xiangying Jiang and Farrah Neumann Research
September 19, 2022

Research report: Duolingo's English learners show strong reading and listening skills

by Xiangying Jiang Research
September 16, 2022

Our 2022 Duolingo Research Grant Winners!

by Cassie Freeman and Jacqueline Bialostozky Research
August 24, 2022

Special report: Understanding English learners around the world

by Danielle Dionne Research
June 29, 2022

Special report: Language-learning trends in Latin America

by Cindy Blanco Research
May 11, 2022

Young people want to work and study abroad—but testing makes it difficult

by Sophie Wodzak and Tamsin Thomas Duolingo English Test
April 4, 2022

How our learners (that’s you!) help improve Duolingo

by Ben Reuveni and Billy Leet Research
December 8, 2021

How family and culture are driving language learners to branch out

by Cindy Blanco Research
December 2, 2021

Two simple tricks for remembering what you've learned on Duolingo

by Lucy Portnoff Research
November 19, 2021

Announcing the Duolingo English Test’s 2021 Doctoral Award Winners!

by Sophie Wodzak Research
October 25, 2021

New study shows learning a language with Duolingo supports brain health

by Cindy Blanco Research
September 28, 2021

Truly Global: 12,000+ cities where students took the Duolingo English Test

by Mark Pavic and Tamsin Thomas Research
September 14, 2021

What if tests were delightful?

by Sophie Wodzak Research
September 9, 2021

Our 2021 Duolingo Research Grant winners

by Cindy Blanco Research
August 12, 2021

Personalized feedback through smart tips

by Cindy Blanco, Xiangying Jiang and Chris Research
July 31, 2021

Can you reach intermediate reading and listening proficiency with Duolingo?

by Lucy Portnoff and Xiangying Jiang Research
July 21, 2021

Duolingo’s most popular course turned high-stakes test

by Sophie Wodzak Research
June 30, 2021

Is the Duolingo English Test fair?

by Sophie Wodzak Research
June 14, 2021

How difficult is the Duolingo English Test?

by Sophie Wodzak and Ramsey L. Cardwell Research
June 1, 2021

How well does Duolingo teach speaking skills?

by Xiangying Jiang, Erin Gustafson and Cindy Blanco Research
May 21, 2021

How we’re improving learning with anonymized speech data

by Gretchen Swecker, Tyler Tape, Kevin Lenzo and Natalia Castillejo Learning
May 13, 2021

Special report: Asian and Pacific language trends on Duolingo

by Cindy Blanco Research
May 6, 2021

International education trends via the world's most accessible English test

by Mark Pavic and Jennifer Dewar Research
April 23, 2021

Born Digital: How we leveraged human-in-the-loop AI to create a more secure high-stakes test

by Sophie Wodzak Research
March 18, 2021

AQuAA: Innovative quality control for the future of testing

by Sophie Wodzak Research
December 16, 2020

Congratulations to the Duolingo English Test’s 2020 Doctoral Award Winners!

by Sophie Wodzak Research
December 15, 2020

2020 Duolingo Language Report: United Kingdom

by Colin Watkins
December 15, 2020

2020 Duolingo Language Report: Global Overview

by Cindy Blanco Research
December 15, 2020

2020 Duolingo Language Report: United States

by Michaela Kron Research
December 15, 2020

2020年版Duolingo言語レポート: 日本の言語トレンド

by Sho Mizutani
December 15, 2020

2020年中国语言学习报告:疫情期间中国用户规模同比增长301%

by Haina Xiang
December 15, 2020

Relatório de Idiomas Duolingo 2020: Brasil

by Analigia Martins
December 15, 2020

Reporte de idiomas de Duolingo 2020: México

by Rebeca Ricoy
October 7, 2020

Learning how to help you learn: Introducing Birdbrain!

by Klinton Bicknell and Claire Brust Research
September 10, 2020

Introducing the 2020 Duolingo Research Grant winners!

by Cindy Blanco Research
September 3, 2020

“Hi, it’s Duo”: Meet the AI behind the meme

by Kevin Yancey and Burr Settles Research
August 31, 2020

Using AI to open up bottlenecks in course content creation

by Stephen Mayhew Research
August 19, 2020

How well does Duolingo work?

by Xiangying Jiang, Joseph Rollinson and Cindy Blanco Research
April 30, 2020

The Duolingo English Test: AI-driven language assessment

by Burr Settles and Geoffrey T. LaFlair Research
April 8, 2020

Changes in Duolingo usage during the COVID-19 pandemic

by Cindy Blanco Research
December 16, 2019

How machine learning helps Duolingo prioritize course improvements

by Will Monroe Research
September 23, 2019

The Duolingo CEFR Checker: An AI tool for adapting learning content

by Bill McDowell and Burr Settles Research
January 9, 2017

How do your country, age and gender impact your New Year’s resolutions?

by Michaela Kron Research
December 14, 2016

How we learn how you learn

by Burr Settles Research
August 30, 2016

For which courses do students make the most progress?

by Marcy Meinert Research
May 5, 2016

Which countries study which languages, and what can we learn from it?

by Bozena Pajak Research
March 31, 2016

Which countries are the best at keeping their New Year’s resolutions?

by Bozena Pajak Research

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