Mean looking duration (in seconds) toward different facial Areas of Interest (AOI; as shown in the insert for the eyes, nose, mouth, and other areas) in a group of infants exposed to a t-shirt carrying their mother's odor (odor group) and in a group of infants exposed to an unworn control stimulus (control group).

<p>Error bars represent the standard errors of the mean (SEM). _*: p<0.05.