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. 2019 Mar 1;9:3293. doi: 10.1038/s41598-019-39511-9

Figure 1.

Figure 1

Experimental design and results. During Familiarization, each infant viewed 8 distinct visual images (20 s each), presented sequentially. In a previous study, each image was accompanied by a segment of infant-directed English2. In the current studies, each image was accompanied by a segment of a nonnative language produced in an infant-directed speech register (German, Experiment 1; Cantonese, Experiment 2). For each familiarization image, this segment was presented twice. At test (20 s), each infant viewed 2 images, a new member of the now-familiar category and a member of a novel category. These were presented simultaneously in silence.