Connects crisis informatics research with collective behavior.
I wonder though does Neal define collective behavior and collection action differently?
Look at these citations:
Quarantelli, E.L. 1985. Emergent Citizen Groups in Disaster Preparedness and Recovery Activities. Final 
Report 33. Newark, Delaware: Disaster Research Center, 
University of Delaware
Turner, Ralph and Lewis Killian. 1987. Collective Behavior. Third Edition. Englewood Cliffs, New Jersey: 
Prentice Hall.
Weller, Jack M. and E. L. Quarantelli. 1973. "Neglected 
Characteristics of Collective Behavior," American Journal of Sociology 79:665-85.
Wenger, Dennis. 1987. "Collective Behavior and Disaster 
Research." Pp. 213-237 in Sociology of Disasters, edited by R. Dynes, B. De Marchi and C. Pelanda. Milan, 
Italy: Franco Angeli.