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Table 2. 
Percentage of correct answers to the comprehension questions in Study 2a
CheckControlPromise
$0.20$2.00$0.20$2.00
(1) promise 71.1 68.6 100.0 100.0 
(2) own bonus 94.7 82.0 97.2 89.7 
(3) real money 62.6 64.4 84.2 80.4 
(1–2) correct 64.7 55.7 94.9 87.0 
(1–3) correct 47.1 41.8 81.9 74.5 
CheckControlPromise
$0.20$2.00$0.20$2.00
(1) promise 71.1 68.6 100.0 100.0 
(2) own bonus 94.7 82.0 97.2 89.7 
(3) real money 62.6 64.4 84.2 80.4 
(1–2) correct 64.7 55.7 94.9 87.0 
(1–3) correct 47.1 41.8 81.9 74.5 
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