5.1 Research Appointment Structure5.2 Sponsored Research Staff Appointments5.2.1 Principal Research Scientist, Principal Research Engineer, Principal Research Associate5.2.2 Research and Program Scientists, Engineers, and Associates5.2.3 Research Specialist, Technical Associate II, Technical Associate I5.2.4 Sponsored Research Technical Staff5.2.5 Research Administrators5.2.6 Lincoln Laboratory Staff5.3 Academic Research Staff Appointments5.3.1 Senior Research Scientist, Senior Research Engineer, Senior Research Associate5.3.2 Postdoctoral Associate, Senior Postdoctoral Associate5.3.3 Postdoctoral Fellow, Senior Postdoctoral Fellow, Research Fellow5.3.4 Visiting Engineer, Visiting Scientist, Visiting Scholar5.3.5 Research Affiliate5.3.6 Guests of the Institute5.3.7 Staff Affiliate5.4 Procedures for Campus Research Appointments5.4.1 Affirmative Action Serious Search5.4.2 Periodic Review5.4.3 Numerical Limitations5.4.4 Reporting Outside Activities and Interests5.4.5 Student Status5.5 Visiting Students