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Background: NDS principles appear in reports surrounding Hurricane Katrina, earthquakes, floods, a disease epidemic, and the Southeast Asian tsunami. They are also intrinsic to coordination within teams, adaptation levels, and performance in dynamic decision processes. Method: Performance was measured in a dynamic decision task in which ER teams of different sizes worked against an attacker who was trying to destroy a city (total N = 225 undergraduates). The complexity of teams\u2019 and attackers\u2019 adaptation strategies and the role of the opponents\u2019 performance were assessed by nonlinear regression analysis. Results: An optimal group size for team performance was identified. Teams were more readily influenced by the attackers\u2019 performance than vice versa. The adaptive capabilities of attackers and teams were impaired by their opponents in some conditions. Conclusion: ER teams should be large enough to contribute a critical mass of ideas but not so large that coordination would be compromised. ER teams used self-organized strategies that could have been more adaptive, whereas attackers used chaotic strategies. Applications: The model and results are applicable to ER processes or training maneuvers involving dynamic decisions but could be limited to nonhierarchical groups. <\/jats:p>","DOI":"10.1177\/0018720809359003","type":"journal-article","created":{"date-parts":[[2010,4,6]],"date-time":"2010-04-06T00:44:43Z","timestamp":1270514683000},"page":"162-172","source":"Crossref","is-referenced-by-count":40,"title":["Nonlinear Dynamics of Team Performance and Adaptability in Emergency Response"],"prefix":"10.1177","volume":"52","author":[{"given":"Stephen J.","family":"Guastello","sequence":"first","affiliation":[{"name":"Marquette University, Milwaukee, Wisconsin,"}]}],"member":"179","published-online":{"date-parts":[[2010,4,5]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.5962\/bhl.title.5851"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4757-5426-1"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.psych.52.1.1"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1037\/0021-9010.88.1.87"},{"key":"atypb5","doi-asserted-by":"publisher","DOI":"10.1080\/14639220512331311580"},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1111\/j.1744-6570.1996.tb01806.x"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-6210.2007.00814.x"},{"key":"atypb8","unstructured":"Comfort, L. 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