Sandra J. Ball-Rokeach

Research and scholarly works Ball-Rokeach and Melvin Defleur developed Media System Dependency (MSD) theory in 1976 as a comprehensive framework to explain how media influence individuals within broader social systems. Rooted in Sociology, the theory argues that media, audiences, and society are interdependent, and therefore media effects cannot be understood in isolation. At the core of MSD is the dependency hypothesis: the more individuals rely on media to fulfill their goals such as understanding the world, guiding actions, or escaping stress—the more influence media will have on their thoughts, feelings, and behaviors. This shifts the perspective from viewing audiences as passive receivers to seeing them as active participants whose level of dependence determines media impact. communication technologies, and civic engagement. As Principal Investigator of the Metamorphosis Project at University of Southern California, she has led long-term research exploring how communication processes shape everyday life in diverse, multiethnic urban settings.

Her work focuses on how traditional and new media including interpersonal networks, ethnic media, and digital platforms interact to create “storytelling neighborhoods,” which foster belonging, social cohesion, and civic participation within communities.

Her research expertise spans a wide range of interconnected areas, including communication technologies and community development, She has also contributed to applied communication, A key aspect of her scholarship is understanding how communication infrastructures influence inclusion, participation, and inequality in modern societies. and co-author of The Great American Values Test (1984). She has also co-edited several influential volumes, including Technological Visions: The Hopes and Fears that Shape New Technologies (2004), Paradoxes of Youth and Sport (2002), and Media, Audience, and Social Structure (1986), which collectively examine the social implications of media, technology, and cultural change. Earlier in her career, she served as co-director of the Media and Violence Task Force for the National Commission on the Causes and Prevention of Violence (1968–69), reflecting her long-standing engagement with public policy and media effects.

Through decades of research, teaching, and leadership, Ball-Rokeach has helped shape the understanding of how communication systems operate within complex urban societies. Her work highlights the critical role of media and storytelling networks in connecting individuals to their communities, especially in an era defined by globalization, migration, and rapidly evolving communication technologies.

Selected publications Books

Selected articles