P300 and S-R Compatibility: A Reply to Magliero et al.

Some recent papers have been devoted to simultaneous analysis of RT and P300 latency effects with S-R compatibility. This, indeed, can be particularly fruitful since it may provide some insight into response choice, a crucial stage of information processing taking place between stimulus analysis and response production. Apparent contradictions have arisen between these studies because of the different kinds of S-R compatibilities involved. The aim of this reply is to emphasize the discrepancies between experimental designs that use semantic versus spatial compatibilities.