by Hamilton Bean, Brooke Liu, Stephanie Madden, Dennis Mileti, Jeannette Sutton, Michele Wood
This project sought to determine the optimized message contents of imminent threat wireless emergency alert (WEA) messages delivered over mobile communication devices. This report presents findings for the first WEA messages disseminated about imminent threats (i.e., first alert messages) from two research phases with U.S. adults: (1) eight experiments, seven focus groups and 50 think-out-loud interviews; and (2) a survey of an actual “real world” severe flood in Boulder, Colorado. It also integrates findings from across study methods and provides actionable guidance and considerations for optimized message contents of imminent one-hour-to-impact threat alerts delivered over mobile communication devices.
by J. Shi, J. Sutton, M.D. Kohler, J-P Ampuero
Recent results are presented to illustrate how predictions of tsunami wave impact and tsunami warning messages can be improved by including information about multiple large-amplitude wave arrivals over longer durations and at refined spatial resolution. Following focus group research, revised tsunami messages were evaluated via online experiments with the public, to determine how revised message content, in contrast with the original message, affects message receiver understanding, believing, and personalizing, all of which are pre-decisional decision making activities.