Table 2.
Performance on flanker task, operation span task (OSPAN) and academic achievement
| Mdn (IQR) | Range | |
|---|---|---|
| Flanker Congruent | ||
| Mean RT (ms) | 518.6 (132.8)a | [392.5 – 827.0] |
| Response Accuracy (%) | 83.3 (15.5)a | [52.4 – 98.8] |
| Flanker Incongruent | ||
| Mean RT (ms) | 571.8 (152.5)b | [420.9 – 939.6] |
| Response Accuracy (%) | 72.6 (17.0)b | [51.2 – 96.4] |
| Flanker Interference | ||
| Mean RT (ms) | 49.4 (44.5) | [−27.6 – 203.0] |
| Response Accuracy (%) | 8.33 (11.9) | [−10.7 – 34.5] |
| OSPAN | ||
| Mean RT (ms) | 4618.2 (1555.7) | [2093.4 – 7354.4] |
| Response Accuracy (%) | 87.5 (13.1) | [52.5 – 100.0] |
| PCU | 0.60 (0.28) | [.14 – .97] |
| PCL | 0.55 (0.28) | [.10 – .95] |
| ANU | 0.38 (0.25) | [.06 – .88] |
| ANL | 0.25 (0.29) | [.03 – .83] |
| M (SD) | Range | |
| Academic Achievement | ||
| Spelling | 110.0 (23.0) | [79.0 – 151.0] |
| Reading | 118.0 (17.0) | [80.0 – 159.0] |
| Math | 109.0 (22.2) | [82.0 – 150.0] |
Note.
Superscripts a, b, denote significant within-participant differences across congruent and incongruent conditions (ps < .001); OSPAN, Operation Span Task39; PCU, partial-credit unit score; PCL, partial-credit load score; ANL, all-or-nothing load score; ANU, all-or-nothing unit score; Academic achievement was assessed with the Kaufman Test of Educational Achievement, Second Edition (KTEA II43) and expressed as standardized scores with the mean of 100 and an SD of 15.