Decision is made to solve a problem of any kind. Suppose the problem is to create a cool atmosphere in your living room. For this, what you will do? You will carry out information search, to find ways to cool the atmosphere of your living room, for example, by an air-conditioner, or by a water cooler, or by a wall fan. For this, you will evaluate all the known alternatives and made cost benefit analysis to decide which product and brand will be suitable. Finally, you will purchase that product.Consumer behaviour has two aspects – the final purchase activity which is visible to us and the decision making process interplay of various variables which are not visible to us.