Communication Overview

Principles

Definition

Communication is the academic field dedicated to the systematic study of the processes by which messages are created, transmitted, received, and interpreted. It investigates the diverse forms, channels, and effects of interaction across human, organizational, and mediated contexts to understand information exchange and meaning creation.

Ontological type

Core Theoretical Traditions

Research Methods

Subfields and Contexts

Key developments

Key Figures

Language and Signal Integration era

Claude E. Shannon [1], with the Massachusetts Institute of Technology [3], emerges as a central figure in the Language and Signal Integration era. His landmark contribution in A Mathematical Theory of Communication [6] established a quantitative framework for communication, linking encoding, transmission, and interpretation through information-theoretic concepts like entropy and channel capacity, which shaped both engineering practice and empirical study in this era. Carl I. Hovland [2], associated with Harvard University [4] and Stanford University [5], advanced understanding of message effects through his studies, notably Communication and Persuasion: Psychological Studies of Opinion Change [7] (1954) and Assimilation and contrast effects in reactions to communication and attitude change [8] (1957). These works provided empirical methods and theoretical insights into attitude change that complemented the engineering emphasis of the era by showing how measurement of persuasion and cognitive response could be integrated with signal-based analysis to inform both theory and application.

Media Ecology and Persuasion era

Mark Granovetter [1] is a sociologist associated with Stanford University [3] and Johns Hopkins University [4] during this era. The Strength of Weak Ties [7] demonstrates how loosely connected individuals bridge disparate groups and enable the diffusion of ideas across networks, a mechanism that clarifies how media ecologies can shape attitudes and diffusion of persuasion. Klaus Krippendorff [2] is associated with University of Pennsylvania [5] and Philadelphia University [6] in this era. Content Analysis: An Introduction to its Methodology [8] established a systematic method for empirical study of messages, coding, and interpretation, revolutionizing how scholars test persuasion models and media effects in the ecological framework.

Networked Digital Communication era

Nicole B. Ellison [1] is a prominent scholar whose work across the networked digital era has touched institutions such as Menlo School [3] and the University of Southern California [4]. Her key contributions include co-authoring 'Social Network Sites: Definition, History, and Scholarship' [7] and 'The Benefits of Facebook “Friends”: Social Capital and College Students’ Use of Online Social Network Sites' [8], work that clarified what online social networks are, traced their evolution, and linked networked ties to college students’ social capital, thereby shaping early scholarship and policy understandings of online communities. danah boyd [2] is a leading researcher whose work across Harvard University [5] and the Massachusetts Institute of Technology [6] during this era examined how online publics form and operate. Her contributions include analyses in 'Social Network Sites: Definition, History, and Scholarship' [7], 'I tweet honestly, I tweet passionately: Twitter users, context collapse, and the imagined audience' [9], and 'Tweet, Tweet, Retweet: Conversational Aspects of Retweeting on Twitter' [10], which illuminate audience dynamics, context collapse, and retweet conversations, thereby highlighting the mechanisms that shape visibility, attribution, and discourse in online publics.