By: |
Giovanna Devetag;
Massimo Warglien |
Abstract: |
It has been suggested that players often produce simplified and/or
misspecified mental representations of interactive decision problems (Kreps,
1990). We submit that the relational structure of players’ preferences in a
game induces cognitive complexity, and may be an important driver of such
simplifications. We provide a formal classification of order structures in
two-person normal form games based on the two properties of monotonicity and
projectivity, and present experiments in which subjects must first construct a
representation of games of different relational complexity, and subsequently
play the games according to their own representation. Experimental results
support the hypothesis that relational complexity matters. More complex games
are harder to represent, and this difficulty is correlated with measures of
short term memory capacity. Furthermore, most erroneous representations are
less complex than the correct ones. In addition, subjects who misrepresent the
games behave consistently with such representations according to simple but
rational decision criteria. This suggests that in many strategic settings
individuals may act optimally on the ground of simplified and mistaken
premises. |
Keywords: |
pure motive, mixed motive, preferences, bi-orders, language, cognition, projectivity, monotonicity, short term memory, experiments |
JEL: |
C70 C72 C91 |
Date: |
2005 |
URL: |
http://d.repec.org/n?u=RePEc:trn:utwpce:0504&r=cbe |