Fabienne Keller
Cartes-fiches 67 Cartes-fiches
Utilisateurs 5 Utilisateurs
Langue Deutsch
Niveau Université
Crée / Actualisé 21.02.2013 / 22.07.2020
Attribution de licence Pas de droit d'auteur (CC0)
Lien de web
0 Réponses exactes 67 Réponses textes 0 Réponses à choix multiple
Fermer la fenêtre

a) Describe a game with perfect information.


b) And give some examples.

(belongs to "extensive form games")

a) a player moves
his action is observed by the other player who then moves
and his action is observed by the other player and so on, until the game finishes. 


b) - removing sticks

   - chess

  - game played with myself (alarm clock)

  - incrumbent and challenger (price fight or not?)


Fermer la fenêtre

How do we usually solve a game with perfect information?


⇒ Games of perfect information are typically solved backwards starting at the end, and are very important to understand credibility of threats and commitment. 

Fermer la fenêtre
Describe a normal form game.
normal form is a description of a game. Unlike extensive form, normal-form representations are not graphical per se, but rather represent the game by way of a matrix. While this approach can be of greater use in identifying strictly dominated strategies and Nash equilibria, some information is lost as compared to extensive-form representations
Fermer la fenêtre

Describe an equilibrum in a normal form game.


You have played an equilibrium if your choice was a best reply to the other player’s choice and this is also true for the other player, namely her/his choice is a best reply to yours.
In an equilibrium you cannot gain anything by choosing another strategy under the assumption that the other player does not change hers/his. 

Fermer la fenêtre

a) describe a simultaneous move game


b) and give some examples

a) simultaneous games are typically represented by the normal form; a game where both players have to decide/move simultaneously


b) prisoner's dilemma 

Fermer la fenêtre

decision or game:

a) a pair of teenage girls choosing dresses for their prom

b) a group of grocery shoppers in the diary section with each shopper choosing flavor of yogurt to purchase


a) game - girls choice affects the others choice

b) decision - no interaction among players

Fermer la fenêtre

decision or game:

a) a college student considering what type of postgraduate education to pursue

b) the new york times and the wall street journal choosing prices for their online subscriptions this year

a) decision - doesn't affect other people

b) game - (Betrand; price competition; strategic)

Fermer la fenêtre

What kind of decision theory is game theory?


Game theory is interactive decision theory

(It studies the behavior of players whoce decisions affect each other)