Writing a composition requires a complex set of skills such as knowledge of spellings, handwriting and rudimentary linguistic understanding. It also involves all of the processes associated with reading comprehension. The four categories of composition writing are narration, argumentation, description and exposition. Each type has a unique purpose and organizational pattern. People can express emotions, ideas, political views, feelings, arguments, thoughts and many other forms of communication through this medium. Writing a composition has various effects on the brain such as improving memory and reducing stress. The act of writing engages more areas of the brain compared to reading. It also helps in dealing with negative emotions and traumatic memories. This book is compiled in such a manner, that it will provide in-depth knowledge about the psychology of written composition. It book provides the readers with a thorough understanding of the subject.