Average parameter values for the parametric model of the redundant target paradigm.

A – start point variability; bY and bN denote response thresholds for target-present and target-absent trials, respectively (Yes and No responses); t0 – non-decision time; vRT, vST, and vNT are accumulation rates for detection responses in redundant-target, single-target and no-target trials, respectively; v∼T and v∼NT stand for accumulation rates for rejection responses in target-present and target-absent trials, respectively. Note: vNT, v∼T and v∼NT were averaged in each age-group across the two tasks (distractor-present and –absent); vNT and v∼T (representing mistakes: False alarms and miss, respectively) are very difficult to identify so their quantitative value is uninterpretable (they are large and negative). The estimated values for the parameters simply suggest that the corresponding accumulators very rarely win the race to threshold. Note that s, the between-trial variability in accumulation rate, was fixed at 0.25 for all accumulators.
Average parameter values for the parametric model of the redundant target paradigm.