Developed by Dr. Stephen Porges, the SSP began as a five-day sound-based intervention designed to reduce stress and auditory sensitivity while enhancing social engagement and resilience. It has evolved from 1 hour per day for 5 days to less time over more days to allow the nervous system time to adjust.  It was determined that less is more.  This non -invasive intervention involves listening to music specifically processed to re-tune the nervous system (regulating state) to introduce a sense of safety and the ability to socially engage or increase engagement. This allows the client to better interpret not only human speech, but, more importantly, the emotional meaning of language. Once interpersonal interactions improve, spontaneous social behaviors and an enhanced ability to learn, self -regulate and engage are often seen.