Which pressure point technique is used when a subject is seated or prone?

The technique that is used when a subject is seated or prone is the hollow behind the ear. This pressure point can be effectively accessed in both positions and is known for its ability to create an immediate compliance response due to the sensitivity of that area on the body. The hollow behind the ear is located near the mastoid process and manipulates the nerves and soft tissue, making it an effective point for controlling a subject without causing serious injury.

This technique is particularly useful because it allows an officer to maintain control over a subject who may be resistant or non-compliant while applying pressure in a manner that does not require the subject to be standing. The effectiveness of this pressure point relies on the anatomical vulnerability in that area, making it a strategic choice in tactical defensive situations.

In contrast, the other options may have specific applications but do not offer the same level of effectiveness for seated or prone subjects. For instance, the under the jaw technique is more applicable when the subject is upright; the hollow behind the collarbone can be more challenging to reach or apply pressure to effectively in a prone position; and the elbow under the shoulder blade technique requires specific positioning that isn't ideal for a seated subject.