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. Author manuscript; available in PMC: 2022 Nov 1.
Published in final edited form as: Contemp Clin Trials. 2021 Mar 29;110:106379. doi: 10.1016/j.cct.2021.106379

Table 1.

Fishbowl Rewards for Contingency Management.

Fishbowl Rewards
Reward Total Slips Value Probability of Draw Average expected price/prize
Small 20 $5 0.20 $1
Medium 64 $20 0.64 $12.8
Large 15 $50 0.15 $7.5
Jumbo 1 $100 0.01 $1
Total 100 1 $22.30