Table 1 Definition of variables
From: The attention network test: a characteristic pattern of deficits in children with ADHD
Variable | Definition |
|---|---|
Reaction time | Mean reaction time (RT) for each cue and flanker condition |
Hits | Number of correct responses |
Overall errors | Number of overall errors |
Wrong responses | All other error responses than omissions, perservations and outliers |
Omissions | RT = 0 ms. |
Perservations | RT > 0 ms. < 100 ms. |
Outliers | Flanker × Cue RT - Stdev < 3*Stdev. RT = 0 can not be both omission and outlier and priority was given to omissions |
Hits RT | Median RT for correct responses |
Hits RT SE | Standard error of RT for correct responses. Measure of consistency of responses |
Variability of SE | Standard deviation of the 3 standard error values calculated for each block. Measures within respondent variability |
Hits RT block change | The slope of change in RT between blocks. Measure of vigilance |
Hits SE block change | The slope of change in standard error of RT between blocks. Measure of consistency and vigilance |
Attention Networks | Calculated both for RT and errors: |
Alerting = RT/error for no cue - RT/error for double cue | |
Orienting = RT/error for central cue - RT/error for orienting cue | |
Conflict: = RT/error for incongruent flanker - RT/error for congruent flanker |