Some studies have shown that eating chocolate before a test can increase brain activity, thereby causing students to score higher on exams. when these findings were announced, the price and quantity sold of chocolate increased in college towns. one reason for this could have been that the:

One reason for this could be that consumers increased their demand for chocolate. This is an example of the economic model called supply and demand. This a model that refers to the process of price determination through the demand of the consumers. When the quantity of the product demanded by the consumers equals the quantity supplied, then an economic balance is set.