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Table 1.
Descriptive Statistics of Selected WM Performance Measures
MeasureMeanSEMRange
Count-span accuracy (%) 59.64 4.19 5.56–94.44
In-scanner WM accuracy (%) 87.66 1.56 68.43–100
In-scanner WM RT (sec) 1.52 0.05 1.11–2.19
n-back accuracy (%) 95.66 0.53 88.88–100
n-back 1-RT (sec) 0.66 0.032 0.33–1.11
Prescan WM capacity (K items) 5.32 1.12 3–7
MeasureMeanSEMRange
Count-span accuracy (%) 59.64 4.19 5.56–94.44
In-scanner WM accuracy (%) 87.66 1.56 68.43–100
In-scanner WM RT (sec) 1.52 0.05 1.11–2.19
n-back accuracy (%) 95.66 0.53 88.88–100
n-back 1-RT (sec) 0.66 0.032 0.33–1.11
Prescan WM capacity (K items) 5.32 1.12 3–7

Six WM measures selected for latent variable (WML) analyses and their means, 1 SEM, and ranges.

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