slides-chap6A-communication-soft

A la productivit e esp er ee du travailleur profits

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a la productivit´ e esp´ er´ ee du travailleur (profits esp´ er´ es nuls) Le travailleur choisit un niveau d’´ education e ∈ { e L , e H } = { 0 , 3 } (sans effet sur la productivit´ e)
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Transmission strat´ egique de l’information / Information non certifiable A k ( j ) = j c ( k, e ) = j e/k (travailleur) B k ( j ) = bracketleftbig k j bracketrightbig 2 (employeur)
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Transmission strat´ egique de l’information / Information non certifiable k H k L N e H e L Travailleur e H e L Travailleur Employeur Employeur j L (1 , 0) j H (3 , 4) j M (2 , 1) j L (1 , 4) j H (3 , 0) j M (2 , 1) j L ( 2 , 0) j H (0 , 4) j M ( 1 , 1) j L (0 , 4) j H (2 , 0) j M (1 , 1) Fig. 1 – ´ Equilibre compl` etement r´ ev´ elateur dans le jeu de signal sur le march´ e du travail (exemple 1)
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Transmission strat´ egique de l’information / Information non certifiable Si on remplace le signal d’´ education e par de la communication gratuite, alors le message “mon aptitude est ´ elev´ ee” n’est plus cr´ edible : le travailleur d´ esire toujours (quel que soit son type/aptitude) faire croire que son aptitude est ´ elev´ ee pour avoir un salaire ´ elev´ e
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Transmission strat´ egique de l’information / Information non certifiable Si on remplace le signal d’´ education e par de la communication gratuite, alors le message “mon aptitude est ´ elev´ ee” n’est plus cr´ edible : le travailleur d´ esire toujours (quel que soit son type/aptitude) faire croire que son aptitude est ´ elev´ ee pour avoir un salaire ´ elev´ e j H = 3 j M = 2 j L = 1 k L 3 , 4 2 , 1 1 , 0 Pr( k L ) = 1 / 2 j H = 3 j M = 2 j L = 1 k H 3 , 0 2 , 1 1 , 4 Pr( k H ) = 1 / 2
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Transmission strat´ egique de l’information / Information non certifiable Jeu de signal (communication) associ´ e avec deux messages
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Transmission strat´ egique de l’information / Information non certifiable Jeu de signal (communication) associ´ e avec deux messages k H k L N m H m L Travailleur m H m L Travailleur Employeur Employeur j L (1 , 0) j H (3 , 4) j M (2 , 1) j L (1 , 4) j H (3 , 0) j M (2 , 1) j L (1 , 0) j H (3 , 4) j M (2 , 1) j L (1 , 4) j H (3 , 0) j M (2 , 1)
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Transmission strat´ egique de l’information / Information non certifiable Jeu de signal (communication) associ´ e avec deux messages k H k L N m H m L Travailleur m H m L Travailleur Employeur Employeur j L (1 , 0) j H (3 , 4) j M (2 , 1) j L (1 , 4) j H (3 , 0) j M (2 , 1) j L (1 , 0) j H (3 , 4) j M (2 , 1) j L (1 , 4) j H (3 , 0) j M (2 , 1) ´ Equilibre compl` etement r´ ev´ elateur ?
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Transmission strat´ egique de l’information / Information non certifiable Jeu de signal (communication) associ´ e avec deux messages k H k L N m H m L Travailleur m H m L Travailleur Employeur Employeur j L (1 , 0) j H (3 , 4) j M (2 , 1) j L (1 , 4) j H (3 , 0) j M (2 , 1) j L (1 , 0) j H (3 , 4) j M (2 , 1) j L (1 , 4) j H (3 , 0) j M (2 , 1) ´ Equilibre compl` etement r´ ev´ elateur ? Non car le travailleur (´ emetteur) de type k L eviera toujours en envoyant le mˆ eme message qu’un travailleur de type k H
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Transmission strat´
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