I was told a long time ago that a writer finds his or her "voice" through the repetition of writing long hand. As early as 14, I began keeping a journal and writing in it, daily. My everyday thoughts, frustrations and actions were recorded in such and the world around me became bearable. In novel and short story writing, I often make a concept "map" or "web" to organize and strategize the entire scope of my work. The process of writing long hand is usually comprised of short sections of the work, such as a dialogue between two characters, a description of scenery that I want to employ, or perhaps some internal dialogue for a given character.
Usually, when I write in long hand there is more editing involved, rather when I type out the story first hand. However, I believe that there is more freedom and informality than using strictly an electronic device to hone into a story, whether short or long.
I hope that answers your question.