About
I’m Giorgi Tchumburidze – Associate Professor of Psychology and head of the Psychology in the Digital World program at BTU (Business and Technology University) in Tbilisi, Georgia. My work focuses on educational assessment, psychometric validation, and large-scale studies like PISA, PIRLS, and TIMSS. This site is my professional home: a place for research, tools, and writing about the measurement of human behavior.
Read full bio →Current Research
Psychological Predictors of Reading Achievement
Evidence from PISA Georgia — examining how self-efficacy, growth mindset, and belonging predict reading literacy.
Digital Divide 2.0
Combining PISA 2022 data with primary survey research to examine digital inequality among Georgian students.
PSS-10 & Self-Efficacy Scale Validation
Psychometric validation of Georgian versions of the Perceived Stress Scale and General Self-Efficacy Scale.
Cultural Life Scripts Replication
A 2026 replication of the 2016 Cultural Life Scripts study in the Georgian context.
Teaching
Psychology in the Digital World
A program at BTU exploring how digital technologies shape human cognition, behavior, and well-being. Courses cover research methodology, psychometrics, and the intersection of psychology with technology.
Latest from the Blog
Recent articles on psychometrics, R tutorials, research notes, and more.
- PsychoMetrika APP – Item Analysis for Teachers and Lecturers, Without the CodeIf you teach, you give tests. Quizzes, midterms, finals, classroom assessments. They’re a core part of how we measure what students have learned. But here’s a question most teachers never ask: how good are your tests, actually? Most assessment in … Read more
- Why I Run All My Research on LimeSurveyIf you do research that involves collecting data from human participants, and most psychology research does, you need a survey platform. Most people default to Google Forms because it’s free and familiar. Some go to commercial tools like Qualtrics or … Read more
- Reliability and Validity – The Two Words Every Psychologist Should UnderstandImagine I bring a bathroom scale into the room and tell you it measures height. You’d laugh. The instrument is wrong for the construct. It doesn’t matter how precise the scale is, how consistent its readings are, or how trustworthy … Read more