TABLE II.
Participant characteristics for each listener group. Hearing acuity = average of thresholds at 2, 3, 4, and 6 kHz in the better ear (in dB HL); Stroop = normalized Stroop effect, defined as the difference in mean response time in the incongruent and neutral condition divided by the mean response time in the neutral condition; SICSPAN = number of items recalled in the correct order; LNS = number of correct trials; Connections = ratio of mean performance (number of correct connections on the alternating trials divided by mean performance on simple trials); Visual Elevator = average time per direction switch (in seconds). Standard deviations are given in parentheses.
| Characteristic | Younger (−1 SNR) | Middle-aged | Older |
|---|---|---|---|
| Age | 20.87 (0.92) | 50.93 (4.59) | 67.60 (6.06) |
| Hearing acuity | 3.93 (3.20) | 17.27 (7.65) | 24.13 (14.34) |
| Stroop | −0.14 (0.12) | −0.19 (0.12) | −0.29 (0.17) |
| SICSPAN | 30.67 (4.51) | 30.40 (4.15) | 21.93 (7.51) |
| LNS | 20.40 (2.30) | 20.33 (2.97) | 18.27 (3.61) |
| Connections | 0.55 (0.05) | 0.57 (0.07) | 0.64 (0.10) |
| Visual elevator | 3.84 (0.86) | 3.64 (0.80) | 4.27 (1.39) |