What are the causes of a change in demand?

Tastes and Preferences of the Consumers: ADVERTISEMENTS

Income of the People

Changes in Prices of the Related Goods

Advertisement Expenditure

The Number of Consumers in the Market

Consumers' Expectations with Regard to Future Prices

hope this help

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answer; ( insanity );