Retail stores put a number of items in the aisles leading to the checkout station. These are placed there to remind customers of things they may have overlooked, or to show products that customers may not have thought of buying until they are seen

Retailers know that some items are purchased on impulse. In other words, the customer simply sees a product and purchases it. Create a fourth hierarchy of effects that would combine the three components of the ABC model when a product is selected on impulse.

The customer simply buys the product, and then explains to herself later why, and how she feels. Consequently, there are two possibilities, both of which begin with behavior.
-The first hierarchy could be:
Behavior>Beliefs>Affect
-The second hierarchy could be:
Behavior>Affect>Beliefs