Working Paper

Digit Ratio Measurement Guide


  • Neyse
  • L.
  • Brañas-Garza
  • P.
Publication Date

Literature on Digit Ratio is rapidly growing in Economics. Quite surprisingly we observe that

there is no consensus about how to make an accurate measurement in such a delicate task.

Along this brief document we offer some concise guidance of how to scan the hands using

digital scanners and provide a comprehensive guideline to make a reliable measurement of

the 2D:4D. Furthermore, we point out the most common imaging and measurement errors.

We also provide a number of hints aimed to avoid these errors that in some cases may cause

systematic inaccuracies.


Key Words

  • 2D:4D
  • Digit Ratio
  • Guide
  • Measurement