What is Schiffman & Kanuk’s model of consumer decision-making?

Schiffman & Kanuk’s model of consumer decision-making:

          This model is related to the problem solving consumer & to some extent the emotional consumer model. This model is made up of three major components:

1. Input
2. Process
3. Output

https://www.youtube.com/watch?v=n6udYmbJLxw