Delays without Mistakes: Response Time and Error Distributions in Dual-Task
Figure 1
Task design and the effect of SOA on response order, RTs and errors.
A) Experimental design. A number and a tone discrimination task were presented at a variable SOA. Task order was unknown and response times to each task were considered from its corresponding stimulus presentation. B) Response order as function of SOA. C,D) Response Time (RT) and Error rates as function of SOA. Positive SOA corresponds to number presented second trials. The classic PRP can be observed (C). RT2 (solid lines) decreases with a slope close to −1 for short SOA until it reaches a plateau. RT1 is unaffected by SOA (dashed lines). Error rates are unaffected by SOA (D). Both for Number and Tone task (black and gray lines respectively).