1. A system configured to utilize predicted attention levels to estimate affective response to a token instance of interest, comprising: a memory configured to store: a total affective response of a user to token instances to which the user was exposed and representations of first and second attention levels in respective first and second token instances from among the token instances; wherein the first and second attention levels are computed utilizing a model for predicting interest in token instances; wherein the first and second token instances have overlapping instantiation periods; and wherein the first attention level is greater than the second attention level; a processor configured to select, based on the representations of the first and second attention levels, the first token instance as the token instance of interest; and the processor is further configured to estimate the affective response to the token instance of interest from the total affective response.