How does the binding of a book affect reader expectations? What about the size?
The actual individual appearance of of individual books is just as obvious an example of how prior expectations control our responses to stories; it influences our attitude to the stories the books contain before we even begin to read them. We expect more distinctive literature from hardcover books with textured, one-color cover and more conventionally popular material from books with luridly colored plastic coatings. We tend to think differently about paper-covered books and ones with hard covers, and as a result we respond differently to the same story in different formats; what might seem forbidding and respectable in hardcover often seems disposable and unthreatening in soft.
The size of a book also influences our response to it. We tend to expect rambunctious, energetic stories like the ones by Dr. Seuss from large books and more fragile, delicate stories like those by Beatrix Potter from smaller ones. In fact, larger books do allow larger effects, while smaller ones demand restraint from an illustrator, lest they appear overly fussy; but these differences are as much a matter of convention as of technical limitations. We tend to read smaller books expecting charm and delicacy — and to find it even if it is not there — and to read large books expecting energetic rambunctiousness— and to find it even if it is not there.Words About Pictures by Perry Nodelman
We shouldn’t underestimate the effect of binding and size. One disadvantage of book apps and ebooks is that the reader is not provided with any textural information, and the size is fixed according to the dimensions of the device.
That said, a universal book app created for iOS (for instance) may well be interpreted very differently depending on whether it is read on an iPhone, an iPad mini, an iPad, a Mac screen or projected onto a smart board.