and less frequent T1 sig- nals caused larger AB effects. Hence the first-task manipulation carried over onto task 2. These effects were found both when task 1 was speeded a n d when task 1 was unspeeded. Furthermoreeffects of the frequency of T2 were additive with SOA in PRP experiments. These results show that the conclusions based on experiments 1–2 extend to within-modality AB paradigms