“…to direct a person's attention, share experiences, request things, or inform. Among typically developing infants, positive affect is associated more with sharing experiences in joint attention than with instrumental gaze following or requesting Kasari, Sigman, Mundy, & Yirmiya, 1990;Mundy, Kasari, & Sigman, 1992; also Adamson & Bakeman, 1985;Bruner, 1981;Rheingold, Hay, & West, 1976!. Thus, sometimes but not always, joint attention serves as both the means to and expression of sharing experiences of the world with others, where sharing entails intersubjective contact and emotional connectedness between people~Hob-son, 1989people~Hob-son, , 1993 From very early in life, infants also show the ability to imitate, for example, translating what they see in other people's faces to their own facial expressions~Field, Woodson, Greenberg, & Cohen, 1982;Kugiamutsakis, 1998;Meltzoff & Moore, 1997!.…”