Reading nonwords aloud: evidence for dynamic control in skilled readers.

In two experiments, we examined whether the dynamics of the reading system are adjusted on a trial-by-trial basis, despite the use of stimuli that all require the same spelling-sound translation routine. Subjects read aloud easy and more difficult nonwords in a predictable alternating sequence (AABB). Dynamic control was inferred via the observation of switch costs in response times and/or accuracy (A to B and B to A) for both types of items. Consistent with online control, switch costs were observed for both kinds of items. Various ways in which the reading system could adjust in response to such stimuli are considered.