Table 1.
Descriptive statistics.
| Grade | Participants | VS | SWAN I | SWAN C | CONG | INC | RT CONG | RT INC | RTV CONG | RTV INC | RTD |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 21 | 0.869 (0.13) | −4.52 (11) | −7.1 (22) | 0.808 (0.18) | 0.634 (0.18) | 485 (78) | 568 (1e + 02) | 152 (59) | 166 (78) | 82.7 (40) |
| 3 | 16 | 0.894 (0.054) | 3.31 (7.9) | 3.92 (15) | 0.869 (0.11) | 0.607 (0.21) | 455 (90) | 527 (91) | 117 (53) | 124 (38) | 71.5 (17) |
| 4 | 24 | 0.854 (0.095) | −2.48 (13) | −10 (26) | 0.784 (0.2) | 0.575 (0.23) | 411 (69) | 488 (73) | 144 (63) | 157 (92) | 76.9 (32) |
| 5 | 23 | 0.915 (0.041) | −3.62 (12) | −16.8 (23) | 0.839 (0.19) | 0.601 (0.24) | 387 (79) | 459 (90) | 96.7 (31) | 106 (55) | 71.9 (23) |
| 6 | 18 | 0.944 (0.02) | −0.667 (7.1) | −3.5 (13) | 0.856 (0.2) | 0.568 (0.23) | 369 (60) | 446 (54) | 96.6 (52) | 98.4 (54) | 77.2 (25) |
Average values of the different variables by grade, standard deviations in parenthesis. SWAN I and SWAN C are the mean scores in the mainly inattentive and mainly hyperactive SWAN questionnaires respectively. CONG and INC stand for proportion correct in the congruent and incongruent conditions respectively. RT is reaction time (in ms), RTV is within participant variability in reaction time, measured as standard deviation of reaction times. RTD is the difference in reaction time in the incongruent vs. congruent conditions.