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TASK
mixed gambles task
Subjects are presented with gambles in which they have a 50% chance of gaining some amount of money and a 50% chance of losing some other amount of money. The subject decides whether or not they would accept the gamble. The amount of the potential gain and loss are varied across trials. Gambles are not resolved during performance of the task; after the end of the task, some gambles are chosen at random and played for real money if they were accepted.



Definition contributed by MLewis about a week ago.

Task Contrasts








Task Indicators






Task records: 2  

conditional reasoning
  • Loss aversion
 

risk seeking
  • number of choices with greater chance of loss than gain minus number of choices with greater chance of gain than loss
 


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Revision 1

Definition contributed by RPoldrack about one year ago:

Subjects are presented with gambles in which they have a 50% chance of gaining some amount of money and a 50% chance of losing some other amount of money. The subject decides whether or not they would accept the gamble. The amount of the potential gain and loss are varied across trials. Gambles are not resolved during performance of the task; after the end of the task, some gambles are chosen at random and played for real money if they were accepted.

View Term Event Log
The neural basis of loss aversion in decision-making under risk.
Tom SM, Fox CR, Trepel C, Poldrack RA
Science (New York, N.Y.) (Science)
2007 Jan 26
Open Abstract | Citation Profile

Sensitivity of the brain to loss aversion during risky gambles.
Dreher JC
Trends in cognitive sciences (Trends Cogn Sci)
2007 Jul
Open Abstract | Citation Profile

Amygdala damage eliminates monetary loss aversion.
De Martino B, Camerer CF, Adolphs R
Proceedings of the National Academy of Sciences of the United States of America (Proc Natl Acad Sci U S A)
2010 Feb 23
Open Abstract | Citation Profile




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