* To test his work: King wanted to see if his books would be successful without the benefit of his already established name. He felt that using a pseudonym would allow him to gauge the quality of his writing without the influence of his existing fanbase.
* To explore different genres: King wanted to experiment with different genres and styles of writing without risking the reputation he had built with his horror novels. He wrote science fiction, suspense, and even a Western under the Bachman name.
* To increase his output: King was a prolific writer, and using a pseudonym allowed him to publish more books without overwhelming the market with Stephen King titles.
* To avoid pressure: King was concerned that the pressure associated with his fame could negatively impact his writing. He felt that using a pseudonym would give him more freedom and allow him to write without the constant scrutiny of the public.
However, the Bachman pseudonym was eventually revealed when a bookstore clerk noticed similarities in the writing styles of King and Bachman. King acknowledged the pseudonym and even published a collection of his Bachman books under the title "The Bachman Books."
Ultimately, the use of the Bachman pseudonym was a successful experiment for King, allowing him to explore new creative avenues and demonstrate his versatility as a writer.