Table III.
Group Mean Scores for Speech Recognition, Spectral Resolution, and Cognitive Scores for CI Participants and NH Controls
| CI | NH | |||
|---|---|---|---|---|
| Mean | SD | Mean | SD | |
| Speech recognition | ||||
| Harvard standard sentences (% words correct) | 73.8 | 16.8 | 71.2 | 11.2 |
| PRESTO sentences (% words correct) | 59.0 | 23.2 | 62.6 | 10.5 |
| CID words (% words correct) | 67.2 | 23.1 | 54.5 | 10.8 |
| Spectral resolution (ripples per octave) | 2.19 | 1.47 | 7.80 | 1.54 |
| Cognitive scores | ||||
| Digit span (number digits correct) | 42.6 | 15.8 | 55.5 | 19.0 |
| Stroop interference score (ms) | 381.5 | 638.2 | 206.7 | 259.7 |
| TOWRE words (% words correct) | 71.4 | 11.9 | 80.5 | 11.6 |
| TOWRE nonwords (% nonwords correct) | 63.1 | 18.3 | 73.6 | 15.2 |
| Raven’s nonverbal reasoning (total correct) | 9.3 | 4.9 | 18.1 | 7.4 |
| Fragmented sentences (% words correct) | 68.3 | 11.5 | 77.7 | 11.1 |
CI = cochlear implant; CID = Central Institute of the Deaf; NH = normal hearing; PRESTO = Perceptually Robust English Sentence Test Open-set; SD = standard deviation; TOWRE = Test of Word Reading Efficiency.