Once the information has been collected, the next step is for it to be evaluated. This is something that is often overlooked in traditional investigations and law enforcement, however, it cannot be ignored. Within the intelligence community, a standardized system of evaluation has been developed which is better known as the 4×4 system.

There are three basic fundamentals which consist of the evaluation process:

  1. The evaluation must be based on professional judgment, unbiased from personal feelings, emotions, and beliefs.
  2. You must always evaluate the source independently of the information itself.
  3. It has to be carried out within a close proximity to the source.

Evaluation tables using the 4×4 system

Source: UNODC

Source: UNODC

Source: UNODC


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