Impulsivity is reflected in errors of commission on inhibitory control tasks and executive flexibility tasks.
Attentional impulsivity is reflected in errors of omission on go/no-go tasks and tends to be higher among clinical groups (Malloy-Diniz et al. 2007).
In the Michigan cohort, Jacobson et al. (1992) did not observe an increase in errors of commission on a similar CPT at 4 years of age but did see an increase in commission errors in a version of the Sternberg Memory task at 4 years and on a CPT at 11 years (Jacobson and Jacobson 2003).
For the purposes of this analysis we indexed our behavioural measure of interest decrement in performance over time on the spatial task by subtracting the number of errors in first half of task from errors in the second half of the task, for each subject.
Given the relationship between interruptions and errors observed in other types of tasks, it is somewhat surprising that we did not find this effect (Altmann, Trafton, & Hambrick, 2014; Li, Blandford, Cairns, & Young, 2008; Westbrook et al., 2010).
Theory suggests that because human memory and attention are imperfect [ 24], one way to mitigate errors or lapses in the execution of tasks is through the use of procedural checklists to help us perform more reliably.
However, as we pointed out earlier, recent studies have shown that MTL patients exhibit an abnormally large number of errors in tasks that require maintenance of associations and feature conjunctions over even brief delays (Hannula et al., 2006; Olson et al., 2006 a, b ; Ezzyat and Olson, 2008; Finke et al., 2008).
These regions also carried the most reliable error-related signals in a subset of tasks, suggesting that the regions form a "core" task-set system.
The aI also contained the most reliable error-related feedback signals in a subset of tasks (Ullsperger et al. 2010).
It is demonstrated that the move to an online system mitigates against poor communication speed, while errors in the estimation of task duration parameters are shown to significantly reduce model utility.
In an effort to resolve these interpretations, subjects completed a GO/NOGO task in which errors of commission were frequent and response conflict was independently varied by manipulating response speeds.
