Auditory brainstem response recording conditions. We recorded ABRs to the same speech sound in two different conditions. For the predictable condition, /da/ was repeated at a probability of 100%. In the variable condition, /da/ was randomly interspersed in the context of seven other speech sounds. We trial-matched responses to compare ABRs recorded in the variable condition to those recorded in the predictable condition without the confound of presentation order or trial event.