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PRODID:-//AMSE//Event Calendar//FR
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UID:event-11458@www.amse-aixmarseille.fr
DTSTAMP:20260421T153656Z
CREATED:20260421T153656Z
LAST-MODIFIED:20260421T153656Z
STATUS:CONFIRMED
SEQUENCE:0
SUMMARY:Economic theory seminar - Dotan Persitz
DTSTART:20241018T100000Z
DTEND:20241018T110000Z
DESCRIPTION:We study the impact of network architecture on the efficiency o
 f information transmission and dynamics of learning in medium-sized network
 s using laboratory experiments. Subjects are incentivized to guess the cor
 rect state of nature based on (i) a private noisy signal they get before th
 e game begins and (ii) the past guesses of their immediate neighbors. We s
 how that networks in which a single individual observes everyone are perfor
 ming surprisingly badly when the distribution of private signals unambiguou
 sly favors one action over the other.  This observation is at odds with Ba
 yesian theory according to which information aggregation on such networks s
 hould be simple and quick. We trace this failure to two behavioral frictio
 ns - (i) excess reliance on private signals and (ii) under imitation of imm
 ediate neighbors who have better information. We also show that these two 
 biases are interdependent. We explore other network structures that do not
  have a global aggregator and show that these behavioral frictions are pres
 ent in all networks and all positions\, but their effect on overall aggrega
 tion is different due to architectural differences. Finally\, we find evid
 ence for non-monotonicity in the quality of aggregation with respect to the
  quantity of information.\\n\\nContact: Jiakun Zheng : jiakun.zheng[at]uni
 v-amu.fr\n\nPlus d'informations: https://www.amse-aixmarseille.fr/fr/evenem
 ents/dotan-persitz
LOCATION:Îlot Bernard du Bois - Salle 23\, AMU - AMSE\, 5-9 boulevard Maur
 ice Bourdet\, 13001 Marseille
URL;VALUE=URI:https://www.amse-aixmarseille.fr/fr/evenements/dotan-persitz
CONTACT:Jiakun Zheng :&nbsp\;jiakun.zheng[at]univ-amu.fr
TRANSP:OPAQUE
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