A programme is a line of work that runs for years and keeps returning to the same question; the studies are the individual pieces done inside one.
Measurement comparability
Whether a measure means the same thing in every group being compared, and what follows when it does not. The longest-running line of work here.
See the studies6studiesInstrument development and validation
Building an instrument from construct blueprint through piloting to structure, invariance and reference data.
See the studies6studiesSSES: Social and Emotional Skills
The OECD Study on Social and Emotional Skills, from conceptual framework through instruments to cross-country delivery and reporting.
See the studies5studiesInternational comparative policy research
Secondary analysis of international assessment data, and what it can and cannot support in policy terms.
See the studies5studiesPersonality and individual differences
How stable differences between people are described, structured and measured.
See the studies3studiesIELS: Early Learning
The OECD International Early Learning and Child Well-being Study, and what it shows about measuring young children.
See the studies3studiesSkills assessment
Measuring what adults know and can do, and what low proficiency actually means.
See the studies3studiesWork and job quality
Job quality, workplace learning and how work is organised, using European survey evidence.
See the studies2studiesAI literacy measurement
Whether AI literacy can be measured objectively, and whether the measure travels across languages.
See the studies1studyProgramme evaluation
Evaluation architecture and empirical evaluation studies for education and development programmes.
See the studiesHow this fits together
Most studies sit under one programme. Some sit under two, because a study of how a measure behaves across countries is both a comparability study and a study of the thing being measured. Those appear in both places rather than being forced into one.