https://www.ifmparis.fr/en/academic-research/the-grid-scale-a-new-tool-for-measuring-service-mixed-satisfaction
"The GRID Scale: a New Tool for Measuring Service Mixed Satisfaction" - Alice AUDREZET | Institut...
The Evaluative Space Grid (GRID scale) provides a common measure for both positivity and negativity through 25 grid cells. The authors propose to use the GRID...