Hitchcock's Techniques for Suspense

Some techniques mentioned that are used in Rear Window is Point of View Editing and this is shown when the main character Jimmy gives two smiles one form looking at a Dog and another from watching a women undress. Also the technique where dialogue mean nothing is used when Jimmy is paying attention to looking out the window instead of listening to the nurse. Fram of emotion is used to show Jimmy's girlfriends disappointment that Jimmy won't live with her or chose a safe profession.