Abstract: Mental state event signatures are used to assess how members of a specific social group react to various stimuli such as video advertisements. The likelihood that a video will go viral is computed based on mental state event signatures. Automated facial expression analysis is utilized to determine an emotional response curve for viewers of a video. The emotional response curve is used to derive a virality probability index for the video. The virality probability index is an indicator of the propensity to go viral for a given video. The emotional response curves are processed according to various demographic criteria in order to account for cultural differences amongst various demographic groups and geographic regions.

Abstract: Analysis of mental states is provided based on videos of a plurality of people experiencing various situations such as media presentations. Videos of the plurality of people are captured and analyzed using classifiers. Facial expressions of the people in the captured video are clustered based on set criteria. A unique signature for the situation to which the people are being exposed is then determined based on the expression clustering. In certain scenarios, the clustering is augmented by self-report data from the people. In embodiments, the expression clustering is based on a combination of multiple facial expressions.