QUESTION 1: What is Secondary Traumatic Stress (STS) or vicarious traumatization?

The therapist's emotional and physiological response from empathic exposure to the client's trauma
The trauma suffered by the patient directly from the abuse
A genetic disorder affecting psychologists
Physical fatigue from sitting for long hours

2nd QUESTION: What is the fundamental difference between primary and secondary traumatic stress?

The primary is milder than the secondary
Primary is experienced directly by the victim, secondary is developed by the therapist out of empathy
The secondary occurs before the primary
There is no difference, they are the same