Table 1.
Mean and standard deviation task performances for participants taking part in behavioral-only and neuroimaging sessions.
| Variable | Behavioral-only M ± SD 53 participants |
Neuroimaging M ± SD 16 participants |
|---|---|---|
| Age in years | 9.04 ± 1.84 | 9.28 ± 1.56 |
| Behavioral measures | ||
| Phonological Awareness Raw Score | 15.58 ± 4.04 | 15.63 ± 4.21 |
| Phonological Awareness Standard Scorea | 12.23 ± 2.62 | 11.75 ± 2.02 |
| Morphological Awareness Raw Scoreb | 27.06 ± 2.25 | 27.94 ± 1.24 |
| Reading Raw Score | 68.79 ± 17.98 | 72.13 ± 20.19 |
| Reading Standard Score | 115.12 ± 10.89 | 116.09 ± 11.31 |
| KBIT-2 Standard Score | 113.2 ± 10.84 | 115.94 ± 12 |
| Morphology Condition (% correct)c | 82.38 ± 10.43 | 82.03 ± 11.78 |
| Morphology Condition RT (ms.)c | 2,642± 389 | 2,698± 353 |
| In-scanner task performanced | – | 76.67 ± 11.44 |
| Morphology Condition (% correct) | ||
| Morphology Condition RT (ms) | – | 2,599 ± 205 |
| Control Match Condition (% correct) | – | 94.72 ± 16.02 |
| Control Match Condition RT (ms) | – | 2,406 ± 257 |
Note. Mean performance scores are presented separately for those who completed behavioral-only, and for those who completed neuroimaging and behavioral.
This subtest standard score is based on a mean of 10 rather than 100.
Two children in the behavioral-only group did not complete this task due to failure to complete practice trials correctly. The morphology task included a total of 30 items; that is, 2 subtests of decomposition (18 items) and derivational (12 items) morphology.
Task performance for 7 children in the behavioral-only group and 1 child in the neuroimaging group is missing due to technical error, experimenter error, and/or participant not passing practice trials.
In-scanner task accuracy performance for 1 participant and response time for 2 participants are missing due to technical error.