The ability to create REAL characters in your writing is essential to set your work apart from others. Nothing can jar a reader out of your story faster than terrible or unbelievable characters. And having an excellent understanding of your characters can help drive the plot of your stories along.
You might have heard the phrase success leaves clues. Market research is our way of discovering those clues so we can incorporate them into our own works. It is not just about finding out what works, but identifying what we can do better than other books in the market place.