Are psychometrics used in the public sector? If it is used, how is it used? Where is it used? Which countries are using?
The wide majority of companies have different tests to measure different cognitive and personality features.

First of all IQ (intelligence quotient) - is a total score derived from several standardized tests designed to assess human intelligence.

It helps filter applicants before even meeting them. (IQ is the highest predictor of educational and work success)

Secondly, there are personality tests. Imagine you're looking for a lawyer. A lawyer preferably should be very emotionally stable and argumentative. In psychometric language, this can be measured with Big Five Personality Test - Low agreeableness and low neuroticism.

There are cooler psychometric tests that are in essence better than Big Five Personality, but they are not commonly used, because of their length or difficulty of analysis.

I'm going to list my personal favorite psychometrics here:


Minnesota Multiphasic Personality Inventory
Millon Clinical Multiaxial Inventory
The Alternative DSM-5 Model for Personality Disorders


But this psychometrics are more useful for clinical/forensic settings rather than Human Resources.

Hope this helps.