Johansson-Stenman, O., P. Martinsson, and M. Mahmud. 2005. "Does Stake Size Matter in Trust Games". Economics Letters 88(3): 365-69.
The proportion of money sent, which is typically assumed to reflect trust, decreased significantly as the stake
size was increased in a trust game conducted in rural Bangladesh.
Nevertheless, even with very large stakes, most senders and receivers sent substantial fractions.