About

What this is

The Center for Psychology publishes established psychological measures, free to take, and the research that decides whether a measure is worth trusting. The tests here are not a product line with a research page attached. They are the visible end of twenty years of work on how psychological and educational constructs are measured, and on whether a measurement still means the same thing once it crosses a language or a border.

Everything on the site is for self-understanding, education and research. Nothing here is a clinical assessment or a diagnosis, and nothing here is a personal service. Where an organisation, a clinic or a research team needs testing at scale, with accounts and full reporting, that is a different thing and it lives elsewhere.

Why the measurement question is the whole question

A questionnaire produces a number whatever you do. Whether that number means anything depends on questions most test sites never raise: does the instrument measure one thing or several, does it behave the same way for a 20-year-old and a 60-year-old, does a translated item still ask what the original asked, and is the reference group it compares you against anything like you. Those are the questions this practice works on, and they are why the test pages here state what is not known as plainly as what is.

Who runs this

Dr Milos Kankaras

Psychometrician and policy analyst. Founder and director of the Center for Psychology.

Twenty years of work on how psychological and educational constructs are measured, and on whether those measurements hold when they cross a language or a border. PhD in social sciences from Tilburg University, with methodological work in psychometric design, large scale assessment and measurement equivalence.

That work has been carried out with the OECD, UNESCO, Eurofound, Cedefop, the European Commission and the Minderoo Foundation, on international studies and on national programmes. It runs from instrument design and validation through to the analysis that policy conclusions are drawn from. He led the design and implementation of the OECD Study on Social and Emotional Skills across ten participating sites. The 250,000+ participant figure covers his international studies collectively. His doctoral work examined measurement equivalence in cross-cultural survey research. The full record is listed under publications.

ORCID | Google Scholar | LinkedIn | miloskankaras.com

Dr. Milos Kankaras is a member of the Psychometric Society, the International Test Commission (ITC), the International Association for Cross-Cultural Psychology (IACCP), and ACM SIGCHI (Special Interest Group on Computer-Human Interaction).