SUMMARY
Consumer behavior includes all thoughts,feelings and actions involved in the selection, purchase, use of products orservices. When they watching an advertisement on TV, when they read a book orrecycled packaging, people fall into a certain behavior. The decision processis the software of the whole model, and involves the crossing of some specificstages: recognition of the problem, gathering the information, evaluation ofalternatives, product selection and post-purchase evaluation. The succession ofthese stages can be interrupted at a moment in time temporarily or permanently.