Verbal abuse is the most common of all the abuses. In the early 90s I met an author, Pat Evans, who has written a series of seven books on verbally abusive relationships. She has sold more than 700,000 books.
That means there are nearly a million people who have been concerned enough about verbal abuse to buy her books. Hopefully, the majority of them have been able to do something about their reactions to verbal abuse and influenced those in a positive manner who were abusing them.