Research Participants Institute
Research Participants Institute, or RPI, is a national market research company located in the United States. They conduct both online studies and in-person projects which always reward you for your time spent. Best of all – RPI is fun, easy and free to join!
- Survey invitations following demographics
- It does exactly as it says on the tin.
- Surveys that are well-structured, logical
- These are some of the top brands' surveys
- Repetitive email invitaticontent
- There were many redirections to reach the survey.
- Sometimes, there is a mismatch between survey topic and survey topic