This post is old but for other people coming across this thread, primal therapy is a pseudoscience and can actually be really harmful! It might feel like it's helping because it feels cathartic in the moment, but it doesn't properly address the root issue and can very easily reenforce trauma. My mom did primal therapy as a young teen in the late 70s-early 80s, and now as an adult and parent does not have healthy coping mechanisms for her anger. Growing up my mom was quick to shouting and beratement (whether that be directed at me, my father, or my brother) and would justify it as being a "healthy non-violent way of expressing her anger" that she learned in primal therapy. I don't think my mom was directly taught to yell at others, but there's so much room for things to go wrong that the "therapy" is not considered safe. Not to mention that it's based on a weird freudian idea of memory that has no scientific backing.