The Science of Human Behavior, Measured.
Buried inside the PISA questionnaire, alongside the reading passages and mathematics problems, is a deceptively simple question: What kind of job do you expect to have when you are about 30 years old? Fifteen-year-olds answer in their own words, and their responses are coded using ISCO-08, the International Standard Classification of Occupations. The result is … Read more
On September 9, 2026, the OECD released the PISA 2025 results, and Georgia had good news to celebrate. The country improved across all three core domains compared to 2022. The government highlighted that Georgia ranked first among 91 participating countries for improvement in science, achieved its best mathematics and science results in a decade, and … Read more
A student takes a national exam and scores 75 out of 100. The number appears on their certificate, determines their university options, and follows them for years. It looks precise. It looks final. It looks like a fact about the student, in the same way that their height or weight is a fact. It isn’t. … Read more
Imagine a test where the questions you see depend on how well you’re doing. Get an item right, and the next item gets harder. Get it wrong, and the next one gets easier. The test calibrates itself to you, in real time, item by item, narrowing in on your true ability with each response. This … Read more
Welcome – and thank you for visiting Psycholo.ge. This site is something I’ve wanted to build for a long time: a dedicated space where psychometrics, research methodology, and the psychology of the digital world come together. After years of working in educational assessment and teaching at the university level, I felt it was time to … Read more