An interactive response, storage and tracking system delivered through an interactive medium (e.g. mobile, internet, kiosk in shops) whereby the provided visual stimuli enables consumers/respondents/users to select a stimulus that best answers their response to a given question. These visual `answers` are then collated to form `clusters` of respondents that share the same or similar preferences thereby enabling the viewer of such information to understand the propensity of a given `cluster` to behave, react, respond, perform and/or purchase.