# Elise Hopman, Ph.D.

Elise Hopman is a Learning Scientist at Duolingo. They are from the Netherlands and have a PhD in Cognitive Psychology. They develop the different types of exercises that you see in your lessons!

## Articles by Xiangying Jiang, Ph.D.

- [**듀오링고 학습 효과를 증명하는 네 가⁠지 연⁠구 결⁠과**](https://blog.duolingo.com/research-about-duolingo/) - Apr 22
- [**4 conclusions des études sur l’efficacité de Duolingo**](https://blog.duolingo.com/resultats-des-etudes-efficacite-de-duolingo/) - Nov 21
- [**D⁠u⁠o⁠l⁠i⁠n⁠g⁠oで学習すると得られる⁠、4つの驚きの効果**](https://blog.duolingo.com/findings-of-duolingo-research/) - Nov 19
- [**4 Erkenntnisse aus Studien zur Wirksamkeit von Duolingo**](https://blog.duolingo.com/ergebnisse-duolingo-wirksamkeitsstudie/) - Nov 14
- [**4 descubrimientos de los estudios de eficacia de Duolingo**](https://blog.duolingo.com/resultados-estudios-eficacia-duolingo/) - Nov 12
- [**4 coisas que aprendemos com os estudos sobre a eficácia do Duolingo**](https://blog.duolingo.com/resultados-dos-estudos-sobre-a-eficacia-do-duolingo/) - Nov 12