Spontaneous Facial Expressions in Congenitally Blind and Sighted Children Aged 8–11

This study found that the emotional facial expressions of 10 congenitally blind and 10 sighted children, aged 8–11, were similar. However, the frequency of certain facial movements was higher in the blind children than in the sighted children, and social influences were evident only in the expressions of the sighted children, who often masked their negative emotions.