Figure 1.

A representation of the procedure and stimuli for both the word and tone conditions. In familiarization trials, infants saw eight different line drawings of dinosaurs (or fish). Each dinosaur was accompanied by either a voice saying “Look at the toma! Do you see the toma?” (word condition) or a series of pure tones (tone condition). During test trials, infants saw a dinosaur and a fish and coders measured how long each infant looked at each image.