Table 2.
Between-group differences in performance of facial emotion categorization task.
| Variables | Older adults (n = 30) |
Young adults (n = 31) |
t | p | ta | pa | ||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||||
| ACC (%) | ||||||||
| Positive | 85 | -13 | 89 | -8 | -1.53 | 0.131 | ||
| Neutral | 86 | -16 | 92 | -10 | -1.52 | 0.134 | ||
| Negative | 56 | -14 | 75 | -10 | -6.20 | 0.000 | ||
| Practice phase | 93 | -8 | 95 | -6 | -1.67 | 0.167 | ||
| RT (milliseconds) | ||||||||
| Positive | 849.11 | -323.52 | 686.07 | -280.88 | 2.51 | 0.036 | 1.61 | 0.113 |
| Neutral | 847.22 | -375.89 | 668.09 | -267.06 | 2.10 | 0.040 | 1.59 | 0.118 |
| Negative | 1726.09 | -547.90 | 1221.44 | -368.57 | 4.23 | 0.000 | 1.61 | 0.003 |
| Practice phase | 1539.50 | -741.43 | 891.12 | -339.53 | 4.81 | 0.000 | ||
Abbreviations: RT, reaction time; ACC, accuracy rate; MD, mean difference; SD, standard deviation; aYielded from one-way ANOVA adjusted by reaction time in the practice phase.