Table 4.

Summary of dual-task P3 results.

Distract or Type	Tone SOA	Was a P3 effect (Target versus Standard difference) detected?	Did P3 difference scores (Target minus Standard) differ in amplitude between Groups?
Semantic	Short	Yes, both groups	Yes, attenuated in AWS versus TFA at Pz and other posterior sites
	Long	Yes, both groups	No
Phonological	Short	Yes for TFA; No for AWS	Yes, attenuated in AWS versus TFA at Pz and other central and posterior sites
	Long	Yes, both groups	No
Unrelated	Short	Yes for TFA; No for AWS	No
	Long	Yes, both groups	Yes, attenuated in AWS versus TFA at Pz and other posterior sites