In two eye-tracking studies we investigated the influence of Mandarin numeral classifiers -a grammatical category in the language -on online overt attention. Mandarin speakers were presented with simple sentences through headphones while their eye-movements to objects presented on a computer screen were monitored. The crucial question is what participants look at while listening to a pre-specified target noun. If classifier categories influence Mandarin speakers' general conceptual processing, then on hearing the target noun they should look at objects that are members of the same classifier category -even when the classifier is not explicitly present (cf., Huettig and Altmann, 2005). The data show that when participants heard a classifier (e.g., ba3, Experiment 1) they shifted overt attention significantly more to classifiermatch objects (e.g., chair) than to distractor objects, but when the classifier was not explicitly presented in speech, overt attention to classifier-match objects and distractor objects did not differ (Experiment 2). This suggests that although classifier distinctions do influence eye-gaze behavior, they do so only during linguistic processing of that distinction and not in momentto-moment general conceptual processing.
KeywordsAttention, classifiers, eye movements, linguistic relativity A guy goes to the pub and has four beers. The next day he wants to tell his friend about his night out. If he is a speaker of Mandarin, he has to use a specific sort of expression. He cannot just say "I had four beers". Instead, he has to include a special category of word before the noun that serves to "individuate" the referent, for example, "I had four bei1 beer" or "four ping2 beer", where bei1 specifies glasses and ping2 bottles. This might not seem so unusual