There is a common misconception, says Timothy Shanahan, that it doesn’t matter what children and young people read, “as long as they’re reading”. The distinguished professor emeritus at the University of Illinois Chicago explains that the rationale for this is that “if kids are practising, it’ll make them better readers”. This is something Shanahan believed himself in the past. Yet over the course of his career, he has changed his mind about how much it matters what children are reading.