Examination of the Adjudicative Guidelines, Appendix B, Part 2: Adjudicative Guidelines Literature Review: the 'National Conflict' Cluster [open pdf - 2MB]
"A review of current social science research was undertaken to provide evidence about the meaning and effectiveness of the Adjudicative Guidelines for making security clearance decisions. This White Paper reviews that evidence for four Guidelines, [A.] Allegiance to the US, [B.] Foreign Influence, [C.] Foreign Preference and [L.] Outside Activities. These four Guidelines focus on different types of evidence of foreign relationships that may create divided loyalties and opportunities for inducement or coercion."
Office of the Director of National Intelligence: http://www.dni.gov/