If it is your experience, I suggest you write it yourself. Whether the teacher looks at it or not, it is an exercise of his own ability.
You should write around these aspects:
1. What do you think of consumer psychology?
2. What do you think is the function of consumer psychology? Give a few examples.
3. Give some suggestions on how to do it in concrete implementation and how to improve it.
4. Say importance, sublimate and end.
Like those mandarin cliches, it is good to have some, not too much. Write realistically, not by the book.