Any tool that you may use to collect or obtain data, measure data, and analyze data that is relevant to the subject of your research, the format may consist of questionnaires, surveys, interviews, checklists, simple tests, a good research instrument is one that has been validated and has proven reliability, it should be able to assist in answering the research aims, objectives and research questions, as well as prove or disprove the hypothesis of the study, it should not have any bias and should be clear as to how it should be used appropriately