Q: What are the characteristics of acceptable research instruments?
What would be considered an acceptable research instrument depends on the methodology selected for your research. At the very least, a research instrument should allow you to collect unbiased data in an objective manner to meet your research goals.
For more information on research instruments and important related aspects, you may find the following resources useful:
- What is a research instrument?
- How to choose the research methodology best suited for your study
- How should I respond to a reviewer's comment regarding selection bias?
Hope that helps.