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C. Blanchet and . Her-ph, D in social psychology at 2015 at the University of Rennes 2. The present study is based on her Ph.D. thesis under the supervision of the second author. Currently she is an associate member in the Cognition, Behavior and Communication (LP3C, EA 1285) research unit. Her research concerns group processes, well-being and performance of teams working in unstable conditions