This document discusses several key ethical issues in research including authorship, plagiarism, peer review, conflicts of interest, and research with human subjects. It provides definitions and guidelines for each topic. For authorship, all authors must significantly contribute to the research and writing. For plagiarism, ideas and words from others must be properly cited. Peer review ensures research quality and ethics. Conflicts of interest can arise from financial interests that compromise research objectivity. Research with human subjects must protect participant welfare.