Our Students

A Graduate School of Education, Health & Psychology

Meet Our Doctoral Students


Ben Atzmon

Ben Atzmon

Ph.D. Student, Cognitive Science in Education

Ben E. Atzmon received his bachelor of arts in psychology with combined studies of qualitative and quantitative research methods from Richmond, the American International University in London, and is currently pursuing his Ph.D. in cognitive science in education at Teachers College, Columbia University. He is interested in how STEM college students’ problem solving choices and motivations are impacted by failure experiences in the STEM classroom environment.
Human Development First-Generation College Student
Ishaq Chowdhury

Ishaq Chowdhury (He/Him/His)

Ph.D. Student, Cognitive Science in Education

Dissertation Advisor: John B Black

Ishaq Chowdhury is currently a PhD candidate studying how educational technology can be better implemented to facilitate learning. He is exploring ways for digital tools to be more effective in supporting classroom environments. His immediate focus is investigating how different types of feedback in formative assessments can influence student performance and understanding of learned material. Currently, Ishaq is conducting studies comparing different levels of interactive feedback to examine how they play a role in cognitive load, student engagement, and student reception towards feedback.
Human Development First-Generation College Student
Yoojin Hahn

Yoojin Hahn

Ph.D. Student, Cognitive Science in Education

Dissertation Advisor: Robert S Siegler
I am a PhD student in the Cognitive Science in Education program. My research broadly explores mathematical learning and performance across different age groups. Currently, I am investigating how children and adults understand graphs and how specific aspects of the learning environment influence their learning.
Human Development
Jullia Lim

Jullia Lim

Ph.D. Student, Cognitive Science in Education

Jullia is a PhD candidate in Cognitive Science in Education, currently researching the effects of AI-generated videos with pedagogical agents (virtual instructors) on cognition and learning. She is particularly interested in the dynamics of human-AI interaction within educational contexts.

As an interdisciplinary researcher, Jullia approaches complex problems from multiple perspectives, informed by her diverse professional experiences, including running an edtech startup, serving as a PM for an education app, and teaching in the classroom.

Her research interests focus on the interaction between individuals and technology. She has designed immersive experiences, such as an augmented reality (AR) social skills game for autistic individuals and a virtual reality (VR) speech therapy app for stuttering patients. Through her work, Jullia aims to leverage technology to create more equitable and inclusive learning environments, ensuring that tech tools meet the diverse needs of all learners.
Human Development
Xinyu Pan

Xinyu Pan

Ph.D. Student, Cognitive Science in Education

Dissertation Advisor: John B Black

Xinyu Pan is a Ph.D. Candidate in Cognitive Science in Education. She is trained in both quantitative and qualitative research methods. Inspired by her previous experience as a high school teacher and Program Director at NYC Department of Education, her primary research interests are teacher beliefs’ influence on instructional behaviors and the longitudinal effect of school-based skills interventions. Outside of her Ph.D. studies, she is a Research Associate at Bank Street College of Education and an Instructional Coach for NYC Public Schools.

Notable projects:

- evaluated the longitudinal effects of a randomized control-trial early childhood skills intervention as part of two multi-year grants funded by the Institute for Educational Sciences and the National Institute of Child Health and Human Development

- designed curriculum that promotes storytelling as a means for mathematics learning and engagement as part of a three-year project funded by the National Science Foundation
Human Development Student-Parent
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