Answer:
Lifestyle.
Explanation:
The psychological factor driving Patrik's behavior is his lifestyle because he bought Timberland boots, not for his outdoor activities but to fit with the image that he has about his ideal lifestyle.
This is a psychological need where he chooses how to spend his money to reach and ideal image of himself and how he wants to live, but it is not a functional need since he is not buying the pair of boots for his daily outdoor activities.
