Given the potential of modern warning technology to save lives, discovering whether it is possible to craft mobile alerts for imminent events in a way that reduces people’s tendency to seek and confirm information before initiating protective action is essential. The purpose of this study was to examine the possibility of designing messages for mobile devices, such as Wireless Emergency Alert (WEA) messages, to minimize action delay. The impact of messages with varied amounts of information on respondents’ understanding, believing, personalizing, deciding, and intended milling was used to test Emergent Norm Theory, using quantitative and qualitative methods. Relative to shorter messages, longer public warning messages reduced people’s inclination to search for and confirm information, thereby shortening warning response delay. The Emergent Norm Theory used herein is broader in application than the context-specific models provided by leading warning scholars to date and yields deeper understanding about how people respond to warnings.
AguirreB. E.WengerD.VigoG. (1998). A test of the emergent norm theory of collective behavior. Sociological Forum, 13, 301-320. doi:10.1023/a:1022145900928
2.
BabbieE. R. (2016). The practice of social research (14th ed.). Boston, MA: Cengage Learning.
3.
BakerE. J. (1979). Predicting response to hurricane warnings: A reanalysis of data from other studies. Mass Emergencies, 4(7), 9-24.
4.
BeanH.LiuB. F.MaddenS.MiletiD. S.SuttonJ.WoodM. M. (2014). Comprehensive testing of imminent threat public messages for mobile devices. College Park, MD: National Consortium for the Study of Terrorism and Responses to Terrorism.
5.
BeanH.LiuB. F.MaddenS.SuttonJ.WoodM. M.MiletiD. S. (2016). Disaster warnings in your pocket: How audiences interpret mobile alerts for an unfamiliar hazard. Journal of Contingencies and Crisis Management, 24, 136-147. doi:10.1111/1468-5973.12108
6.
BeanH.SuttonJ.LiuB. F.MaddenS.WoodM. M.MiletiD. S. (2015). The study of mobile public warning messages: A research review and agenda. Review of Communication, 15, 60-80. doi:10.1080/15358593.2015.1014402
7.
BlumerH. (1939). Collective behavior. In ParkR. E. (Ed.), An outline of principles of sociology (pp. 219-280). New York, NY: Barnes & Noble.
8.
BurbyR. J.WagnerF. (1996). Protecting tourists from death and injury in coastal storms. Disasters, 20, 49-60. doi:10.1111/j.1467-7717.1996.tb00514.x
ChiuA. N. L.EscalanteL. E.MitchellJ. K.PerryD. C.SchroederT. A.WaltonT. (1983). Hurricane Iwa, Hawaii, November 23, 1982. Washington, DC: National Academies Press.
11.
CliffordR. A. (1956). The Rio Grande flood: A comparative study of border communities in disaster (Publication No. 458). Washington, DC: National Academy of Sciences, National Research Council.
12.
CohenJ. (1988). Statistical power analysis for the Behavioral Sciences (2nd ed.). Hillsdale, NJ: Lawrence Erlbaum.
13.
CohenJ. (1992). A power primer. Psychological Bulletin, 112, 155-159.
14.
CreswellJ. W. (2009). Research design: Qualitative, quantitative, and mixed method approaches (3rd ed.). Los Angeles, CA: SAGE.
15.
CutterS. L. (1987). Airborne toxic releases: Are communities prepared?Environment: Science and Policy for Sustainable Development, 29(6), 12-31. doi:10.1080/00139157.1987.9931330
DrabekT. E. (1969). Social processes in disaster: Family evacuation. Social Problems, 16, 336-348.
18.
DrabekT. E. (1986). Human system responses to disaster: An inventory of sociological findings. New York, NY: Springer-Verlag.
19.
DrabekT. E. (1999). Understanding disaster warning responses. The Social Science Journal, 36, 515-523. doi:10.1016/S0362-3319(99)00021-X
20.
DrabekT. E.BoggsK. S. (1968). Families in disaster: Reactions and relatives. Journal of Marriage and the Family, 30, 443-451.
21.
DrabekT. E.McEntireD. A. (2003). Emergent phenomena and the sociology of disaster: Lessons, trends and opportunities from the research literature. Disaster Prevention and Management: An International Journal, 12, 97-112. doi:10.1108/09653560310474214
22.
DrabekT. E.StephensonJ. S. (1971). When disaster strikes. Journal of Applied Social Psychology, 1, 187-203. doi:10.1111/j.1559-1816.1971.tb00362.x
23.
DranschD.RotzollH.PoserK. (2010). The contribution of maps to the challenges of risk communication to the public. International Journal of Digital Earth, 3, 292-311. doi:10.1080/17538941003774668
24.
DunbarP.McCulloughH.MungovG.VarnerJ.StrokerK. (2011). 2011 Tohoku earthquake and tsunami data available from the National Oceanic and Atmospheric Administration/National Geophysical Data Center. Geomatics, Natural Hazards & Risk, 2, 305-323. doi:10.1080/19475705.2011.632443
25.
EisingaR.GrotenhuisM.PelzerB. (2012). The reliability of a two-item scale: Pearson, Cronbach or Spearman-Brown?International Journal of Public Health, 58, 637-642.
26.
EricssonK.SimonH. (1993). Protocol analysis: Verbal reports as data (2nd ed.). Boston, MA: MIT Press.
27.
FarleyJ. E.BarlowH. D.FinkelsteinM. S.RileyL. (1993). Earthquake hysteria, before and after: A survey and follow-up on public response to the Browning forecast. International Journal of Mass Emergencies and Disasters, 11, 305-322.
28.
Federal Emergency Management Agency. (n.d.). Lesson 3: Common Alerting Protocol message composition. Washington, DC: U.S. Department of Homeland Security. Retrieved from https://emilms.fema.gov/IS247a/lesson3/L3_Print.htm
FlynnC. B. (1979). Three Mile Island Telephone Survey: Preliminary report on procedures and findings. Tempe, AZ: Mountain West Research.
31.
FrisbyB. N.SellnowD. D.LaneD. R.VeilS. R.SellnowT. L. (2013). Instruction in crisis situations: Targeting learning preferences and self-efficacy. Risk Management, 15, 250-271. doi:10.1057/rm.2013.7
32.
FrisbyB. N.VeilS. R.SellnowT. L. (2014). Instructional messages during health-related crises: Essential content for self-protection. Health Communication, 29, 347-354.
33.
GarciaE. M. (1989). Earthquake preparedness in California: A survey of Irvine residents. Emmitsburg, MD: National Emergency Training Center.
34.
Given, D. D., & U.S. Geological Survey. (2014). Technical implementation plan for the ShakeAlert production system—An earthquake early warning system for the west coast of the United States (Open-file report 2014-1097, p. 25). Retrieved from http://purl.fdlp.gov/GPO/gpo49667
35.
Hagemeier-KloseM.WagnerK. (2009). Evaluation of flood hazard maps in print and web mapping services as information tools in flood risk communication. Natural Hazards and Earth System Sciences, 9, 563-574.
36.
Hammarstrom-TornstamG. (1977). Varingprocessen (Warning process). Uppsala, Sweden: University of Uppsala.
37.
HaynesK.BarclayJ.PidgeonN. (2007). Volcanic hazard communication using maps: An evaluation of their effectiveness. Bulletin of Volcanology, 70, 123-138. doi:10.1007/s00445-007-0124-7
38.
HodlerT. W. (1982). Residents’ preparedness and response to the Kalamazoo Tornado. Disasters, 6, 44-49. doi:10.1111/j.1467-7717.1982.tb00743.x
39.
HoutsP. S.LindellM. K.HuT.ClearyP. D.TokuhataG.FlynnC. B. (1984). Protective Action Decision Model applied to evacuation during the Three Mile Island crisis. International Journal of Mass Emergencies and Disasters, 2, 27-39.
40.
JinY.FraustinoJ. D.LiuB. F. (2016). The scared, the outraged, and the anxious: How crisis emotions, involvement, and demographics predict publics’ conative coping. International Journal of Strategic Communication, 10, 289-308. doi:10.1080/1553118X.2016.1160401
41.
JohnO. P.Benet-MartínezV. (2000). Measurement: Reliability, construct validation, and scale construction. In ReisH. T.JuddC. M. (Eds.), Handbook of research methods in social and personality psychology (pp. 473-503). New York, NY: Cambridge University Press.
42.
KaspersonR. E.RennO.SlovicP.BrownH. S.EmelJ.GobleR.. . . RatickS. (1988). The social amplification of risk: A conceptual framework. Risk Analysis, 8, 177-187.
43.
KingD. (2008). How people responded to the April 2007 tsunami warning in Cairns and Townsville. Australian Journal of Emergency Management, 23(1), 10-20.
44.
KlineP. (2000). Handbook of psychological testing (2nd ed.). New York, NY: Routledge.
45.
KuligowskiE. D.LombardoF. T.PhanL. T.LevitanM. L.JorgensenD. P. (2014). Technical investigation of the May 22, 2011, Tornado in Joplin, Missouri (NIST NCSTAR3). Gaithersburg, MD: National Institute of Standards and Technology, U.S. Department of Commerce. Retrieved from http://nvlpubs.nist.gov/nistpubs/NCSTAR/NIST.NCSTAR.3.pdf
46.
LachmanR.TatsuokaM.BonkW. J. (1961). Human behavior during the Tsunami of May 1960. Science, 133, 1405-1409. doi:10.1126/science.133.3462.1405
47.
LindellM. K.PerryR. W. (1987). Warning mechanisms in emergency response systems. International Journal of Mass Emergencies and Disasters, 5, 137-153.
48.
LindellM. K.PerryR. W. (1993). Risk area residents’ changing perceptions of volcano hazard at Mt. St. Helens. In NemecJ.NiggJ.SiccardiF. (Eds.), Prediction and perception of natural hazards (pp. 159-166). Boston, MD: Kluwer Academic.
49.
LindellM. K.PerryR. W. (2012). The protective action decision model: Theoretical modifications and additional evidence. Risk Analysis, 32, 616-632.
50.
LiuB. F.FraustinoJ. D.JinY. (2015). How disaster information form, source, type, and prior disaster exposure affect public outcomes: Jumping on the social media bandwagon?Journal of Applied Communication Research, 43, 44-65. doi:10.1080/00909882.2014.982685
51.
LiuB. F.WoodM. M.BeanH.MaddenS.SuttonJ.MiletiD. S. (2012). Comprehensive testing of imminent threat public messages for mobile devices (Phase I final report). College Park, MD: National Consortium for the Study of Terrorism and Responses to Terrorism.
52.
LocherD. A. (2002). Collective behavior. Upper Saddle River, NJ: Prentice Hall.
53.
MallettL.VaughtC.BrnichM. J. (1993). Sociotechnical communication in an underground mine fire: A study of warning messages during an emergency evacuation. Safety Science, 16, 709-728. doi:10.1016/0925-7535(93)90032-9
54.
MartinezF. J.FogueM.CollM.CanoJ. C.CalafateC. T.ManzoniP. (2010). Evaluating the impact of a novel warning message dissemination scheme for VANETs using real city maps. In CrovellaM.FeeneyL. M.RubensteinD.RaghavanS. V. (Eds.), NETWORKING 2010: Lecture notes in computer science (Vol. 6091, pp. 265-276). Berlin, Germany: Springer. doi:10.1007/978-3-642-12963-6_21
55.
MayhornC. B.McLaughlinA. C. (2014). Warning the world of extreme events: A global perspective on risk communication for natural and technological disaster. Safety Science, 61, 43-50.
56.
McGeeT. K.GowG. A. (2012). Potential responses by on-campus university students to a university emergency alert. Journal of Risk Research, 15, 693-710.
57.
McLuckieB. F. (1975). Centralization and natural disaster response: A preliminary hypothesis and interpretations. Mass Emergencies, 1, 1-10.
58.
MertonR. K. (1968). Social theory and social structure (Enlarged ed.). New York, NY: The Free Press.
59.
MiletiD. S. (1975). Natural hazard warning systems in the United States: A research assessment. Boulder: Institute of Behavioral Science, University of Colorado.
60.
MiletiD. S.BeanH.LiuB. F.MaddenS.SuttonJ.WoodM. M. (2012). Hazards and protective actions sequences message matrix: Comprehensive testing of imminent threat public messages for mobile devices. College Park, MD: National Consortium for the Study of Terrorism and Responses to Terrorism.
61.
MiletiD. S.BeckE. M. (1975). Communication in crisis: Explaining evacuation symbolically. Communication Research, 2, 24-49.
62.
MiletiD. S.DarlingtonJ. D. (1995). Societal response to revised earthquake probabilities in the San Francisco Bay Area. International Journal of Mass Emergencies Disasters, 13, 119-145.
63.
MiletiD. S.DrabekT. E.HaasJ. E. (1975). Human systems in extreme environments: A sociological perspective. Boulder: Institute of Behavioral Science, University of Colorado.
64.
MiletiD. S.FitzpatrickC. (1991). Communication of public risk: Its theory and its application. Emmitsburg, MD: National Emergency Training Center.
65.
MiletiD. S.O’BrienP. W. (1992). Warnings during disaster: Normalizing communicated risk. Social Problems, 39, 40-57.
66.
MiletiD. S.SorensenJ. H. (1990). Communication of emergency public warnings: A social science perspective and state-of-the-art assessment. Oakridge, TN: Oak Ridge National Laboratory.
67.
National Oceanic and Atmospheric Administration. (2016). Billion-dollar weather and climate disasters: Table of events. Washington, DC: National Oceanic and Atmospheric Administration, U.S. Department of Commerce. Retrieved from http://www.ncdc.noaa.gov/billions/events
68.
National Oceanic and Atmospheric Administration. (n.d.). December 26, 2004 Sumatra Indonesia earthquake and tsunami. Washington, DC: National Oceanic and Atmospheric Administration, U.S. Department of Commerce. Retrieved from http://www.ngdc.noaa.gov/hazardimages/event/show/51
69.
NeuwirthK.DunwoodyS.GriffinR. J. (2000). Protection motivation and risk communication. Risk Analysis, 20, 721-734. doi:10.1111/0272-4332.205065
70.
NiggJ. M. (1987). Communication and behavior: Organizational and individual response to warnings. In DynesR. R.DeMarchiB.PelandaC. (Eds.), Sociology of disasters (pp. 103-117). Milan, Italy: Franco Angeli Libri.
71.
NunnallyJ. C. (1967). Psychometric theory. New York, NY: McGraw-Hill.
72.
NunnallyJ. C. (1978). Psychometric theory (2nd ed.). New York, NY: McGraw-Hill.
73.
NunnallyJ. C.BernsteinI. H. (1994). Psychometric theory (3rd ed.). New York, NY: McGraw-Hill.
74.
ParkR. E. (1924). Introduction to the science of sociology (2nd ed.). Chicago, IL: University of Chicago Press.
75.
PatonD.McClureJ.BürgeltP. T. (2006). Natural hazard resilience: The role of individual and household preparedness. In PatonD.JohnstonD. M. (Eds.), Disaster resilience: An integrated approach (pp. 105-127). Springfield, IL: Charles C. Thomas Publisher.
76.
PerryR. W. (1982). The social psychology of civil defense. Lexington, MA: Lexington Books.
77.
PerryR. W. (1983). Population evacuation in volcanic eruptions, floods, and nuclear power plant accidents: Some elementary comparisons. Journal of Community Psychology, 11, 36-47. doi:10.1002/1520-6629(198301)11:1<36::AID-JCOP2290110104>3.0.CO;2-2
78.
PerryR. W.GreenM. R. (1982). The role of ethnicity in the emergency decision-making process. Sociological Inquiry, 52, 306-334. doi:10.1111/j.1475-682X.1982.tb01257.x
79.
PerryR. W.GreeneM.LindellM. (1986). Twentieth century volcanicity at Mt. St. Helens: The routinization of life near an active volcano. Springfield, VA: School of Public Affairs, Arizona State University.
80.
PerryR. W.LindellM. K.GreeneM. R. (1981). Evacuation planning in emergency. Lexington, MA: Lexington Books.
81.
PerryR. W.LindellM. K.GreeneM. R. (1982). Crisis communications: Ethnic differentials in interpreting and acting on disaster warnings. Social Behavior and Personality, 10(1), 97-104. doi:10.2224/sbp.1982.10.1.97
82.
PhillipsB. D.MorrowB. H. (2007). Social science research needs: Focus on vulnerable populations, forecasting, and warnings. Natural Hazards Review, 8(3), 61-68.
83.
QuarantelliE. L. (1980). Evacuation behavior and problems: Findings and implications from the research literature. Columbus: The Ohio State University Disaster Research Center.
84.
RogersG. O. (1985). Human components of emergency warnings. Pittsburg, PA: Center for Social and Urban Research, University of Pittsburg.
85.
RogersG. O.NehnevajsaJ. (1987). Warning human populations of technological hazard. In ChesterC.GrantK. S. (Eds.), Proceedings of the American nuclear society topical meeting on radiological accidents: Perspectives and planning, Bethesda, MD, 1986 (pp. 357-361). Washington, DC: US Department of Energy.Retrieved from http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/18/086/18086454.pdf#page=332
86.
SaarinenT. F.SellJ. L. (1985). Warning and response to the Mount St. Helen’s eruption. Albany: State University of New York Press.
87.
SellnowT. L.SellnowD. D. (2010). The instructional dynamic of risk and crisis communication: Distinguishing instructional messages from dialogue. Review of Communication, 10, 112-126. doi:10.1080/15358590903402200
88.
SellnowT. L.SellnowD. D.LaneD. R.LittlefieldR. S. (2012). The value of instructional communication in crisis situations: Restoring order to chaos. Risk Analysis, 32, 633-634.
89.
SlovicP. (1987). Perception of risk. Science, 236, 280-285.
90.
SorensenJ. H.MiletiD. S. (1987). Decision-making uncertainties in emergency warning system organizations. International Journal of Mass Emergencies and Disasters, 5, 33-61.
91.
SorensenJ. H.ShumpertB. L.VogtB. M. (2004). Planning for protective action decision making: Evacuate or shelter-in-place. Journal of Hazardous Materials, 109, 1-11. doi:10.1016/j.jhazmat.2004.03.004
92.
StephensK. K.BarrettA. K.MahometaM. J. (2013). Organizational communication in emergencies: Using multiple channels and sources to combat noise and capture attention. Human Communication Research, 39, 230-251. doi:10.1111/hcre.12002
93.
StewartD. W.ShamdasaniP. N. (2015). Focus groups: Theory and practice (3rd ed., Vol. 20). Thousand Oaks, CA: SAGE.
94.
TracyK. (2001). Discourse analysis in communication. In SchiffrinD.TannenD.HamiltonH. (Eds.), Handbook of discourse analysis (pp. 728-749). Oxford, UK: Blackwell.
95.
TurnerR. H.KillianL. M. (1957). Collective behavior. Englewood Cliffs, NJ: Prentice-Hall.
TurnerR. H.NiggJ. M.PazD. H.YoungB. S. (1979). Earthquake threat: The humanitarian response in Southern California. Los Angeles: Institute for Social Science Research, University of California, Los Angeles.
100.
TurnerR. H.NiggJ. M.PazD. H.YoungB. S. (1981). Community response to earthquake threat in Southern California: Part 10 summary and recommendations. Los Angeles: Institute for Social Science Research, University of California, Los Angeles.
VihalemmT.KiiselM.Harro-LoitH. (2012). Citizens’ response patterns to warning messages. Journal of Contingencies and Crisis Management, 20, 13-25. doi:10.1111/j.1468-5973.2011.00655.x
103.
WogalterM. S.DingusT. A. (1999). Methodological techniques for evaluating behavioral intentions and compliance. In WogalterM.DeJoyD. M.LaugheryK. R. (Eds.), Warnings and risk communication (pp. 53-81). London, England: Taylor & Francis.
104.
WoodM. M.MiletiD. S.KanoM.KelleyM. M.ReganR.BourqueL. B. (2012). Communicating actionable risk for terrorism and other hazards. Risk Analysis, 32, 601-615. doi:10.1111/j.1539-6924.2011.01645.x
105.
WrayR. J.BeckerS. M.HendersonN.GlikD.JupkaK.MiddletonS.. . . MitchellE. W. (2008). Communicating with the public about emerging health threats: Lessons from the Pre-Event Message Development Project. American Journal of Public Health, 98, 2214-2222. doi:10.2105/AJPH.2006.107102
106.
XieX.-F.WangM.ZhangR.-G.LiJ.YuQ.-Y. (2011). The role of emotions in risk communication. Risk Analysis, 31, 450-465. doi:10.1111/j.1539-6924.2010.01530.x
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