Longer pre-change listening both boosts accuracy and speeds responses.

Evidence

Median reaction times correlated negatively with change times, mirroring dependence of hit rate on change times (p < 0.001; Fig. 2f ). This dependence can already be seen in the raw data (Fig. 1c ), where hit trials (black) for longer change times exhibit shorter reaction times. Again the onset time decreased correspondingly with longer change time, suggesting more accurate estimation of the initial statistics. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3324