Table 1. Results on various measures of the task across age groups.
‘Leading’ refers to the RT of the fastest response on each trial, and non-leading refers to the second response on the trial. For definitions of other terms see the Methods. All values are presented as mean with 95% CI over participants unless noted otherwise.
| RT relative to start of response window (ms) | prob. successful stop | prob. correct go | Selectivity (ms) | SSRT (ms) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unprepared | Prepared | ||||||||||||
| Age (n included) | mean # blocks submitted | Leading | Non-leading | Leading | Non-leading | Unprepared | Prepared | Unprepared | Prepared | Unprepared | Prepared | Unprepared | Prepared |
| 18–24 (2939) | 3.4 | 154 (1.4) | 190 (1.8) | 155 (1.5) | 214 (2.0) | 0.64 (0.005) | 0.67 (0.005) | 0.87 (0.005) | 0.81 (0.006) | 58 (2.3) | 34 (2.2) | 365 (2.1) | 340 (2.3) |
| 25–29 (2367) | 3.7 | 153 (1.5) | 192 (2.1) | 155 (1.6) | 217 (2.2) | 0.65 (0.006) | 0.68 (0.005) | 0.86 (0.006) | 0.80 (0.007) | 61 (2.2) | 35 (2.4) | 365 (2.2) | 335 (2.4) |
| 30–39 (3554) | 3.9 | 151 (1.2) | 193 (1.8) | 154 (1.4) | 218 (1.9) | 0.63 (0.005) | 0.67 (0.004) | 0.85 (0.005) | 0.78 (0.007) | 61 (2.0) | 35 (2.0) | 373 (1.8) | 342 (2.2) |
| 40–49 (2041) | 4.5 | 153 (1.6) | 198 (2.4) | 156 (1.7) | 221 (2.6) | 0.62 (0.006) | 0.68 (0.006) | 0.84 (0.008) | 0.75 (0.010) | 65 (2.6) | 33 (2.8) | 384 (2.3) | 349 (3.0) |
| 50–59 (1010) | 5.8 | 156 (2.4) | 211 (4.3) | 157 (2.7) | 232 (4.6) | 0.61 (0.010) | 0.68 (0.009) | 0.80 (0.014) | 0.68 (0.016) | 66 (3.8) | 43 (3.9) | 399 (3.7) | 353 (4.5) |
| 60+ (585) | 6.4 | 151 (3.4) | 212 (5.8) | 151 (3.9) | 229 (6.8) | 0.59 (0.014) | 0.66 (0.014) | 0.73 (0.018) | 0.62 (0.022) | 60 (6.6) | 43 (6.6) | 411 (5.5) | 365 (6.9) |