Estimated Effect (IMAGE) Proceedings of the National Academy of Sciences Caption The estimated effect by country of by-second news story tone on skin conductance levels, a measure of physiological activation, 30 seconds into news stories Credit Image courtesy of Stuart Soroka, Patrick Fournier, and Lilach Nir. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.