An example system includes a first headset including first sensor to gather first user data from a first subject during exposure to media, the first user data including at least one of psychophysiological data or physiological data； and a first processor to generate first data indicative of an emotional response of the first subject based on the first user data. The example system includes a second headset including a second sensor to gather second user data from the second subject during exposure to the media, the second user data including at least one of psychophysiological data or physiological data； a second processor to generate second data indicative of an emotional response of the second subject based on the second user data and synchronize the second data with the first data to generate synchronized response data； and a second transmitter to transmit the synchronized response data to a central processor.
