The idea of a "psychological novel" has been around since the 19th century, when writers began to explore the inner lives of their characters in depth. Today, there are many other terms that can be used to describe this type of fiction. Some synonyms for the psychological novel include "character study," "introspective narrative," or "psychological fiction." Other terms that might be used to describe works in this genre include "stream-of-consciousness fiction," "experimental fiction," or "literary fiction." Regardless of the term used, the psychological novel continues to be an important genre in modern literature, exploring the complexities of human emotions and the depths of human psychology.