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Participant information for the addition group (N = 10) and the subtraction group (N = 10).
| Addition | Subtraction | Difference | |
|---|---|---|---|
| Females:males | 8:2 | 8:2 | |
| Age (in years) | 18.4 | 18.8 | t(18) = 1.1 |
| Calculator use questionnaire | 3.3 | 3.3 | t(18) < 1 |
| Arithmetic skill (French Kit score) | 34.3 | 35.9 | t(18) < 1 |
| Math experience (number of arithmetic lessons) | 4.5 | 4.7 | t(18) < 1 |
