Here is what I retain from my reading of this book: * E. Castello, Text Complexity and Reading Comprehension Tests, Bern: Peter Lang, 2008.
To begin with, Castello identifies two types of complexity, and states that research in this field attempts to quantify inherent complexity and receiver-oriented complexity, i.e. complexity or difficulty per se on one side and in terms of reader and text on the other.
He cites C.J. Alderson and L. Merlini Barbaresi (strangely enough, we are not related, as far as I know) for their definition of linguistic complexity, M. Halliday and T. Gibson …more ...