Which type of evidence is NOT typically collected at a crime scene?

Emotional evidence is not typically collected at a crime scene because it does not consist of physical materials or objects that can be documented or preserved in a forensic investigation. Unlike biological, digital, and chemical evidence, which can include tangible items such as DNA, computer files, or substances like drugs, emotional evidence is subjective and relates to feelings or states of mind that cannot be physically gathered or analyzed.

In forensic investigations, the focus is on items that can provide concrete information about the crime, such as biological samples that may contain DNA, digital evidence that may offer insights into communications or activities associated with the crime, and chemical evidence that can indicate the presence of illegal substances or explosives. Emotional evidence, being intangible and inherently personal, does not fit into the categories of evidence that forensic science typically examines or collects at a crime scene.