Television Viewing Patterns in 6- to 18- Month-Olds: The Role of Caregiver–Infant Interactional Quality Ashley E. Fidler, Elizabeth Zack, and Rachel Barr Georgetown University The present study examines coviewing of Baby Mozart by 6- to 18-month- old infants and their caregivers under naturalistic conditions. We had two questions. First, extending the method of Barr, Zack, Garcia, and Muentener (Infancy, 13 [2008], 30–56) to a younger population, we asked if age, prior exposure, and caregiver verbal input would predict infant looking to a Baby Mozart video from 6 to 18 months. Second, we asked if caregiver–infant interactional quality, defined as the amount of shared focus and turn taking between infant and caregiver, would be associated with infant looking time. We found that, in addition to the anticipated effect of prior exposure and caregiver verbal input, interactional quality measures were related to infant media-directed looking. Infants who engaged in more shared focus and turn taking looked more to the pro- gram than infants who interacted less with their caregivers. These results are discussed in terms of social mediation of coviewing during early infancy. In recent years, the availability and use of infant-directed media has increased substantially. During the 1990s, approximately 17% of children younger than 1 year of age were exposed to television and videos, while in recent years that number has increased to more than 50% (Anderson & Pempek, 2005; Courage & Setliff, 2009; DeLoache & Chiong, 2009; Correspondence should be sent to Rachel Barr, Department of Psychology, 306A White- Gravenor Building, Georgetown University, Washington, DC 20057. E-mail: rfb5@ georgetown.edu Infancy, 1–21, 2010 Copyright Ó International Society on Infant Studies (ISIS) ISSN: 1525-0008 print / 1532-7078 online DOI: 10.1111/j.1532-7078.2009.00013.x