Response time (ms) as a function of the number of task-irrelevant distractors (2, 4, 8) for car experts (n=14) and car novices (n=14) who searched for face targets amongst face and car distractors, face targets among face and sofa distractors, sofa targets among sofa and car distractors, and sofa targets among sofa and face distractors. Error bars represent the standard error of the mean.