I haven't read the book yet, but judging by the content of the film, which included electroshock therapy, suicide, discussion of sexual and marital problems and heavy references to casual sex, I think probably not. However, the author famously wanted nothing to do with the finished film and claims never to have seen it all the way through, so perhaps there are significant differences? Either way, I would make sure your children do watch it or read it, perhaps when they are a little older, as there are valuable lessons to be learnt from both.
to A. Mahmood, YIKES! I just answered your other post, and now I see this one. Is it the child wanting to read these, and if so WHY???? This is not typical reading matter even for really bright 11-12-13 yr olds. I'd be very concerned. What is he/ she trying to find out? Is this a subtle cry for help, ie, "I feel this way too?"
The book is excellent for anyone from maybe mature 17 and up. Great study of a state-run psychiatric hospital back in the ?50's-60's. The author had experienced some of this, if I recall. They did use horribly destructive electro-shock back then, that tended to wipe out or change the personality and even destroy memories. NOW, when electro-shock is used, it is at MUCH lower settings, has few or no side effects and for some people with severe chronic long-lasting depression resistant to everything else, is IS the answer.
But getting back to why this kid wants to read this book....I'm not so much concerned that there is sex and/or violence in it as to the issue of what is going on that this kid is drawn to these books.
There are a lot more really good books out there for a kid of that age who is a precocious reader to try, not just ones dealing with psychotics, suicide, etc.
Talk to a reasonable librarian about what adult books would be suitable for this child that have other themes. I recall at that age reading books like Clavell's "Sho-Gun" about feudal Japan, and Michener's lengthy but fascinating books about "Hawaii" and others. Also, books like "Plagues and Peoples" ---that wasn't out when I was a child but the similar "Rats, Lice and History" was, and it completely fascinated me. Explains the role of disease in human history. (I did end up an RN!) Also, I used to skim through big chunks of the Will Durant series on the history of civilization, a series which is still available.
A lot of kids do like sci-fi and fantasy. Ursula LeGuin's books are excellent, start off with the "Earth Sea Trilogy" -- beautifully written books. Or CJ Cherryh's "The Cuckoo's Egg", or the series about King Arthur and Merlin etc by Marion Zimmer Bradley---NOT a child's story. There is also TH White's "The Once and Future King" also about King Arthur. A truly great book. The first part, his childhood, was turned by Disney into the movie "the Sword and the Stone" but the book, even the childhood part is NOT a kid's book. Its serious, dark in places, but definitely holds one's interest. "Ender's Game" by Orson Scott Card is another sci-fi book my kid's liked. Not to forget the Harry Potter series. Yes, the first book or even the first two are written more for youngsters, but as the boy ages in the series the whole tone of the series ages with him, until by the end the reader is dealing with adult issues and choices. Just some suggestions.