Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Percentage of correct answers to the comprehension questions in Study 2a
| Check | Control | Promise | ||
|---|---|---|---|---|
| $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 |
