Which factor does NOT relate to the establishment of a suspect's Modus Operandi?

The establishment of a suspect's Modus Operandi (MO) involves analyzing the patterns and methods that a suspect typically employs during the commission of a crime. This encompasses various elements such as the weapon used, the time the crime occurs, and the location where it takes place. These factors contribute to understanding how a suspect operates, which can aid in identifying and apprehending them.

In contrast, the social background of the suspect, while it may provide contextual information about their behavior or motivations, does not directly inform the specific methods or patterns of criminal activity that the suspect engages in. Modus Operandi focuses more on the repeated behaviors and techniques a suspect uses during a crime rather than their personal history or social circumstances. Thus, social background is less relevant when establishing the patterns characteristic of a suspect's criminal conduct.