Are you a self-published author? Do you review books for self-published authors? Would you be willing to help a Ph.D. student researching the importance of reviews for self-published authors in her research by taking one of these two surveys?
Author Survey: https://www.surveymonkey.com/s/selfpublishedauthorsurvey
Reviewer Survey: https://www.surveymonkey.com/s/selfpublishedreviewersurvey
She would appreciate your help in gathering data, and it would help clarify the relationship between self-published authors' book sales and obtaining reviews. Please consider helping her by taking the appropriate survey.