.
. CSHL Press .
. . . . .
.
 
.
.
. .
 

Request an Exam Copy of Evolution
 

.
. . .
.  BOOK COVER .
. . .
.
.  cover .
.
CLICK TO ENLARGE
 
Buy the Book
 
.
. Register at our site
www.cshlpress.com
to join our
Discount Program
and receive 10% discounts
on all website purchases.
.
.
 

CSH Protocols

 

You may also be interested in:

Evolution: The Molecular Landscape

Cold Spring Harbor’s 74th Symposium
EVOLUTION
The Molecular Landscape
Edited by Bruce Stillman,
David Stewart, and
Jan Witkowski,
Cold Spring Harbor Laboratory

   
 

Tit-for-Tat

Figure WN21.9 - When individuals meet each other many times, a tit-for-tat (TFT) strategy can be stable.

Figure WN21.9. When individuals meet each other many times, a tit-for-tat (TFT) strategy can be stable. To give a concrete example, we use the payoff matrix of Fig. 21.33. If everyone plays TFT (blue), then they always cooperate and get a payoff of 3. An individual who always defects (red) will gain a payoff of 5 on the first encounter, but if he meets the same partner again, that partner retaliates, and the defector gains only 1. The diagram shows a series of encounters between pairs of players, with their average payoff per encounter. The common TFT strategy always does better than the invading defection strategy.

 
 
 

 
. .