I am sure this is mostly seen as a positive but this can also backfire in an interview, and later, at work (I see a sibling comment addresses this). If a person

I am sure this is mostly seen as a positive but this can also backfire in an interview, and later, at work (I see a sibling comment addresses this). If a person leads with saying he has written a book on a topic, and then is unable to provide adequate responses to basic questions, the panel opinion goes south very soon. I have seen this happen. Think of it as when a candidate claims she knows a language X well, but then is unable to answer reasonable questions around X. Saying you have written a book is like this claim, except dialing up expectations to the max. Not saying advertising a book is a bad idea, but be aware of the expectations you are setting up.