FIGURE 4.

Dendrograms and correlations between dendrogram structures for the (a) same individual sort and (b) different individual sort. The numbers 1 and 2 indicate that the images had open and closed mouths, respectively. Colors specify the three cluster solutions for each age bin and highlight commonalities across dendrograms. Red clusters contain mainly anger and disgust images, green clusters mainly contain certain fear and neutral images, and blue images mainly contain certain happy, calm, and surprise images. 3‐year‐olds’ dendrograms are colored differently as they showed less differentiation