There are multiple definitions:

1. encephalization quotient(English)

   • ratio between brain size and body weight
   • Anatomy, Ratio-based metric
   • https://doi.org…bio.2013.02.009

2. emotional intelligence quotient(English)

   • TEIQue, DERS-16, TEIQue-SF, UCLALS-BR
   • Emotional aspects, Scoring systems/scales, Psychology
   • https://doi.org…OC.2023.3273517
   • https://doi.org…syg.2022.735934