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	Psychophysiological Measures in Media Research	Media Richness Analysis
Field	Communication	Communication
Family	Process / pipeline	Process / pipeline
Year of origin	2004	1986
Originator	Psychophysiology of media (Ravaja; Lang's tradition)	Richard L. Daft & Robert H. Lengel
Type	Real-time physiological measurement of attention and emotion to media	Framework and method for assessing channel richness vs. task equivocality
Seminal source	Ravaja, N. (2004). Contributions of psychophysiology to media research: Review and recommendations. Media Psychology, 6(2), 193–235.	Daft, R. L., & Lengel, R. H. (1986). Organizational information requirements, media richness and structural design. Management Science, 32(5), 554–571.
Aliases	Physiological measures of media response, Media psychophysiology, Biometric media measurement, Medya Araştırmalarında Psikofizyolojik Ölçümler	Media richness theory analysis, Information richness analysis, Channel richness assessment, Ortam Zenginliği Analizi
Related	4	3
Summary	Psychophysiological measurement records the body's continuous responses — heart rate, skin conductance, facial muscle activity, and more — while people are exposed to media, providing real-time, covert indicators of attention and emotion. Reviewed for communication by Ravaja, these measures sidestep the biases of self-report and capture moment-to-moment processing as a message unfolds.	Media richness analysis applies Daft and Lengel's media richness theory to evaluate communication channels by their capacity to carry rich information and to assess how well a channel fits the equivocality of the task at hand. Rooted in organizational communication, it provides criteria — feedback immediacy, multiplicity of cues, language variety, and personal focus — for ranking channels from lean (a memo) to rich (face-to-face) and for diagnosing whether managers and teams are matching channel to message appropriately.