+ wishlist Design for the Mind: Seven Psychological Principles of Persuasive Design [9781617292958] Add to Cart The item has been added Author: Victor Yocco Design for the Mind: Seven Psychological Principles of Persuasive Design [9781617292958] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 99 15% 100 - 249 16% 250 - 499 17% 500 - 999 18% 1000+ 20% List Price As Low as $39.99 Format: Paperback