Which document outlines procedures and protocols for conducting investigations?

The investigation policy or manual is the essential document that outlines procedures and protocols for conducting investigations. This manual serves as a comprehensive guide that defines the standards and methodologies that investigators should follow. It typically includes guidelines on evidence collection, interviewing techniques, report writing, and ethical considerations, ensuring that all investigations are conducted systematically and consistently.

By providing a structured approach to investigative practices, the manual helps to maintain the integrity of the investigation process and ensures compliance with legal requirements and organizational policies. This is crucial for producing reliable findings that can be used in legal proceedings or organizational decision-making.

In contrast, case reports summarize the findings of an individual investigation, field notes serve as a record of observations made during the investigative process, and evidence logs track the management and chain of custody of physical evidence. While these documents are important for their respective roles in an investigation, they do not serve to guide the overall investigative procedures and protocols in the same comprehensive manner as the investigation policy or manual.