US Patent 9015084 Estimating affective response to a token instance of interest

A user may be exposed to multiple token instances representing stimuli that may influence the affective state of the user. Described herein are embodiments of systems, method, and computer programs for estimating affective response to a token instance of interest, selected from among the token instances. In one example embodiment, the token instance of interest is a token instance for which attention level of the user is higher than at least one other token instance.