What is the author's style in The Noonday Demon: An Atlas of Depression by Andrew Solomon?

Solomon uses a colloquial style in his writing, as if he is speaking directly to his reader. Any psychological words or phrases he uses that are not well-known are briefly defined for the reader to fully understand his meaning. Though the book is written primarily about depression and other related topics and is directed toward the psychological, it is not mean for only those familiar with the field. On the contrary, Solomon has made it easy for anyone interested in the subject to read and understand the book. His purpose to inform his readers on the subject of depression is done through his personal experience, case examples and informational passages, which add varying degrees of meaning to his ideas.