Pulling the trigger

Key to good writing is making the experience feel real for the reader, a major part of my teaching of authors.
You need to evoke a reaction in your reader and this is done through triggers, using your reader’s associations to evoke a reaction. How do you do that?
Well, why not start by playing on:
Their memories
Their connections to places and people
Their prejudices and preconceptions?
Their response to weather conditions - snow, rain, heat etc
Their deeply felt fears and phobias?
John Dean