There is a certain detachment in this book which feels inappropriate for a novel and it took me a long time to warm to it. This is partly because the charatcters are rarely referred to by name and instead referred to by role or characteristic: 'The psychologist', 'the four o'clock appointment', 'the pink-haired girl' and so on. This, combined with a lack of any speech or quotation marks, leads to a real sense of distance.
So, the book generally engages at the cognitive rather than affective level; and I began to wonder if it isn't a novel at all, but rather a manual on cognitive behavioural therapy cast in the form of a novel. You can certainly learn a lot about the therapeutic process from the book and much of it rings very true.
But there is emotional engagement, though only in the subplot, which concerns a forbidden love which wracks the psychologist and almost derails him emotionally. Sadly, the general 'arms-length' sense in the writing kept me from caring deeply about the outcome, which was a shame.
But I've still given the book four stars because it is well written, if a little stiff and mannered in places, and the development and narrative thrust kept me interested and wanting to read to the end. Ultimately, an enjoyable read.