PPI Validation and Reliability
Ernalyn Grace Bautista
• University of Santo Tomas
• Philippines
• 04/15/23
• 0 Comments
Hi! We would very much like to use PPI for our undergraduate thesis. However, we are required to present evidences of its validity and reliability, which I cannot find in this site. Would you be able to provide me a link to a site or paper I can review to obtain such values? Thank you!
