Psychometric Tools

C-NRSBTool

Explore whether your country list correlates with the Human Development Index

About this tool

This tool helps researchers detect and quantify selection bias in cross-national studies. It may be used to check whether data availability is systematically related to countries' development levels. Thus, it addresses a widespread but often overlooked methodological problem: assuming missing data is random when it may be actually related to national capacity to collect and report statistics.

World Map

Click countries to select / deselect
Low HDI
High HDI ■ Selected

Enter countries in your sample:

Comma-separated names, codes or ISO-3 codes. E.g.: Spain, USA, DEU, 日本

0 countries selected