John Boyne has described the conception of his novel as an idea popping into his head instantly of "two boys, the mirror of each other, sitting either side of a wire fence". While the conception of the book came about fast, his inspiration for writing has a more lengthy foundation. Boyne has stated that his style and writing process has been influenced by Malcolm Bradbury at the University of East Anglia, who suggested he write every day without rest days.[16]
Unlike the other novels written by him, Boyne has described how he wrote the first draft of The Boy in the Striped Pyjamas in roughly two and a half days; the idea for the novel came to him on Tuesday, April 27, and he then wrote non-stop until Friday at noon. Afterwards, he ended up writing ten different drafts before sending his book to the editor.[16] As for the subject material and research that Boyne undertook to write the book, Professor Gerd Bayer from the University of Erlangen has stated that Boyne's reader should not rely on "the actual truth-value of his text".[17]