Trauma Analysis : Anxiety + Hypervigilence with regards to Expectations of Others

Trauma analysis : 

 Subject (S) impresses upon themselves, that others (O) are placing expectations (E) upon subject + subject becomes anxious (A) as a result of feeling obligated (Ob) to match E. 

Where does this come from, and how does it come about? The mere placement of E upon S should not result in A, except if ... S has been repeatedly conditioned by trauma in the past, for failing to react to E with A. So, 

• Trauma Reaction 1 : S reacts to E, with A
• Trauma Reaction 2 : S preemptively assumes E, as a matter of hypervigilance

Very interesting.