A great deal of scholarly work has explored the motivations behind media consumption and other various communication traits. However, little research has investigated the sources of these motivations and virtually no research considers their potential genetic underpinnings. Drawing on the field of behavior genetics, we use a classical twin design study to examine the genetic and environmental influences on nine communication behaviors. Our findings indicate a substantial portion of the total variance in media habits can be attributed to genes, as much as one-third of the variance in some instances. Mass communication scholars would benefit by paying closer attention to heritability when thinking about the causes as well as the consequences of media traits in contemporary society.Media consumption behaviors, comprised of observable acts of individual media exposure (LaRose, 2010), have been heavily studied in mass communication. Mainly described as the product of a conscious selection process, these behaviors have been understood using a multitude of seminal communication theories including the ''uses and gratifications'' (U&G) paradigm. Developed in the 1940s, U&G sought to address behavior indicated by audiences who seek out content from the media that provide them with specific experiences (Lowery & DeFleur, 1995). This article follows this formative research by examining an area frequently overlooked by media scholars-motivation. Scholars have provided ample evidence of how media use and other communication behaviors gratify a series of different motivations, yet current research is limited in its ability to explain the causes of these motivations. U&G theory has evolved and been applied to a variety of behaviors includingmost recently-Internet use. Throughout this evolution, motivation has remained a basic element of this research, although its sources are largely unexamined. While mass communication researchers develop the paradigm theoretically and broaden its empirical application, we still struggle to explain the origins of motivations underlying communication behaviors. And while scholars have linked media behaviors to specific