From the following list of statements, identify the set which has negative implications for research ethics.
(i) a researcher critically looks at the findings of another research(ii) Related studies are cited without proper references
(iii) Research findings are made the basis for policy making
(iv) Conduct of practitioner is screened in terms of reported research evidences
(v) a research study is replicated with a view to verify the evidences from other Researches
(vi) both policy making and policy implementing processes are regulated in terms of preliminary studies.