1. (autoshape lever pressing) locate the lever near the food hoper and the food hoper under the red light.
2. first habituate the food hoper so that the rat approaches the hoper/lever and light when food presented on FT schedule
3. reinforce lever presses when they occur in presence of red light on FR1, fade to intermittent schedule
4. shape response of button pressing by presenting the red light as a reinforcer for meeting successive approximations
5. present blue light, when rat orients toward button, present red light and reinforce lever pressing
6. present blue light, when rat approaches button, present red light and reinforce lever pressing with food
7. present blue light, when rat pushes button, present red light and reinforce lever pressing with food