Figure 2.

Example of visual stimuli in an experimental trial. Each trial began with a pre-labeling period, during which target and distractor images appeared alone, side by side. After 1500 ms, a salient central image (e.g., smiling star) appeared. Simultaneously, the attention getting auditory stimulus “Look!” was presented. Once the toddler fixated on the central image for 100 ms, it disappeared. Then, the spoken label for the target was presented, followed by an encouraging phrase (e.g., “Train! You’re doing great!”). The post-labeling test period then went from 300 to 1800 ms post naming onset.