20. The method according to claim 1 , wherein the method further comprises a step of determining the end response of the person toward the retail element using a Bayesian graphical model based on the changes in affective states and interest, wherein the end response includes likelihood of purchase, a rating for a purchased product, and degree of satisfaction.
20. The method according to claim 1 , wherein the method further comprises a step of determining the end response of the person toward the retail element using a Bayesian graphical model based on the changes in affective states and interest, wherein the end response includes likelihood of purchase, a rating for a purchased product, and degree of satisfaction. 21. The method according to claim 20 , wherein the method further comprises a step of decoding the intermediate responses of the person toward the retail element as the progression of hidden states in the Bayesian graphical model, wherein the intermediate responses are defined as progression of the person's attitude changes toward the retail element.