Investigative Principles and Practices
Investigative Principles and Practices
This domain covers the foundational principles that underpin every investigation: objectivity, integrity, confidentiality, proportionality, due process, and documentation. Candidates must understand these as governing standards, not abstract ideals-they determine whether findings survive scrutiny.
Key concepts include the investigative mindset (skeptical inquiry without prejudgment), the presumption of innocence in workplace and criminal contexts, conflict-of-interest avoidance, and the duty to report and preserve evidence. Understand the rights of subjects and witnesses, the importance of impartiality, and the requirement to follow policy and law even when inconvenient. Know the principle that investigations serve the organization's legitimate interests while respecting individual rights, and that findings must be evidence-based and reviewable.
Traps include treating a subject's silence or demeanor as evidence of guilt, allowing a personal relationship to compromise objectivity, and disclosing case information to unauthorized parties. Questions often test whether you recognize a conflict of interest that should trigger recusal, or a confidentiality breach framed as helpful cooperation. Another trap is assuming that a policy violation justifies skipping procedural steps-due process is not optional.
Rule of thumb: if you would be uncomfortable defending the action in a hearing or to a regulator, it likely violates a core principle.
Worked example: An investigator discovers the subject is a close friend. The correct practice is to disclose the relationship and request reassignment; proceeding while concealing the relationship compromises objectivity and the credibility of the findings, regardless of the outcome.