doi:10.1103/PhysRevE.92.062817engPastor, J. M.Garcimartín, A.Gago, P. A.Peralta, J. P.Martín-Gómez, C.Ferrer Bueno, Luis MiguelMaza, D.Parisi, D. R.Pugnaloni, L. A.Zuriguel, I.Experimental proof of faster-is-slower in systems of frictional particles flowing through constrictionsART-2015-93227The "faster-is-slower" (FIS) effect was first predicted by computer simulations of the egress of pedestrians through a narrow exit D. Helbing, I. J. Farkas, and T. Vicsek, Nature (London) 407, 487 (2000)NATUAS0028-083610.1038/35035023]. FIS refers to the finding that, under certain conditions, an excess of the individuals'' vigor in the attempt to exit causes a decrease in the flow rate. In general, this effect is identified by the appearance of a minimum when plotting the total evacuation time of a crowd as a function of the pedestrian desired velocity. Here, we experimentally show that the FIS effect indeed occurs in three different systems of discrete particles flowing through a constriction: (a) humans evacuating a room, (b) a herd of sheep entering a barn, and (c) grains flowing out a 2D hopper over a vibrated incline. This finding suggests that FIS is a universal phenomenon for active matter passing through a narrowing.2015http://zaguan.unizar.es/record/4180410.1103/PhysRevE.92.062817http://zaguan.unizar.es/record/41804oai:zaguan.unizar.es:41804info:eu-repo/grantAgreement/ES/MINECO/FIS2014-57325PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 92, 6 (2015), 062817[6 pp]by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess