1. A system configured to reduce computational load involved in processing measurements of affective response of a user to content, comprising: a content emotional response analyzer (content ERA) configured to: receive a first segment of content, analyze the first segment, and output a first indication indicating that a first value related to an emotional response to the first segment does not reach a first predetermined threshold; and a controller configured to select, based on the first indication, a first processing level for a processor to process measurements of affective response of the user to the first segment; the content ERA is further configured to: receive a second segment of content, analyze the second segment, and output a second indication indicating that a second value related to a prediction of emotional response to the second segment reaches a second predetermined threshold; the controller is further configured to select, based on the second indication, a second processing level for the processor to process measurements of affective response of the user to the second segment; wherein, per volume unit of measurement data, number of computation cycles utilized by the processor to process, at the first processing level, measurements of the affective response of the user to the first segment, is at least 50% lower than number of computation cycles utilized by the processor to process, at the second processing level, measurements of the affective response of the user to the second segment.