“…For instance, when choosing what movie to watch or what food to order off a menu, we must often search through a large number of alternatives. While much effort has been devoted to understanding the mechanisms underlying two-alternative forced choice (2AFC) in value-based decisionmaking (Alós-Ferrer, 2018;Bhatia, 2013;Boorman, Rushworth & Behrens, 2013;Clithero, 2018;De Martino, Kumaran, Seymour, & Dolan, 2006;Hare, Camerer & Rangel, 2009;Hunt, Malalasekera, de Berker, Miranda, Farmer, et al, 2018;Hutcherson, Bushong & Rangel, 2015;Krajbich, Armel & Rangel, 2010;Mormann, Malmaud, Huth, et al, 2010;Philiastides & Ratcliff, 2013;Polonia, Woodford & Ruff, 2019;Rodriquez, Turner & McClure, 2014;Webb. 2019) and choices involving three to four alternatives (Berkowitsch, Scheibehenne & Rieskamp, 2014;Diederich, 2003;Gluth, Spektor & Rieskamp, 2018;Gluth, Kern, Kortmann & Vitali, 2020;Noguchi & Stewart, 2014;Roe, Busemeyer & Townsend, 2001;Towal, Mormann, & Koch, 2013;Trueblood, Brown & Heathcote, 2014;Usher & McClelland, 2004), comparably little has been done to investigate many-alternative forced choices (MAFC, more than four alternatives) (Ashby, Jekel, Dickert & Glöckner, 2016;Payne, 1976;Reutskaja, Nagel, Camerer, & Rangel, 2011).…”