Image Strength and Identity Diffusion as Factors Influencing the Perception of Hospitals by their Facebook Communities -- The Ideal Topic: Interdependence of Topic Interpretability and other Quality Features in Topic Modelling for Short Texts -- Making Reproducible Research Simple using RMarkdown and the OSF -- Visual Saliency: How Text Influences -- Improving the Web Accessibility of a University Library for People with Visual Disabilities through a Mixed Evaluation Approach -- Utilization of Vanity to Promote Energy Saving Activities -- Verification of the Effect of Presenting a Virtual Front Vehicle on Controlling Speed -- Roles on Corporate and Public Innovation Communities: Understanding Personas to Reach New Frontiers -- Qualitative Evaluation of the Usability of a Web-Based Survey Tool to Assess Reading Comprehension and Metacognitive Strategies of University Students -- Automatic Versus Manual Forwarding in Web Surveys - A Cognitive Load Perspective on Satisficing Responding -- A New Information Theory based Clustering Fusion Method for Multi-view Representations of Text Documents -- Application of Visual Saliency in the Background Image Cutting for Layout Design -- Gamification Elements on Social Live Streaming Service Mobile Applications -- A Two-Phase Framework for Detecting Manipulation Campaigns in Social Media -- Filter Bubbles and Content Diversity? An Agent-based Modeling Approach -- The Law of Live Streaming: A Systematic Literature Review and Analysis of German Legal Framework -- Social Media Use, Political Polarization, and Social Capital: Is Social Media Tearing the U.S. Apart? -- Designing an Experiment on Recognition of Political Fake News by Social Media Users: Factors of Dropout -- -- Illicit Drug Purchases via Social Media among American Young People -- I Do It Because I Feel That... Moral Disengagement and Emotions in Cyberbullying and Cybervictimisation -- The Effects of Thinking Styles and News Domain on Fake News Recognition by Social Media Users: Evidencefrom Russia -- Using Deep Learning to Detect Rumors in Twitter -- The Role of Moral Receptors and Moral Disengagement in the Conduct of Unethical Behaviors on Social Media -- .Catfishing: A Look into Online Dating and Impersonation -- Riding the Wave of Misclassification: How we End Up with Extreme YouTube Content -- Characterizing Social Bots Spreading Financial Disinformation -- Cyber Risks in Social Media -- Misinformation in the Chinese Weibo -- Ethical, Legal & Security Implications of Digital Legacies on Social Media -- When Emotions Grow: Cross-Cultural Differences in the Role of Emotions in the Dynamics of Conflictual Discussions on Social Media -- The World of Museums and Web 2.0: Links between Social Media and the Number of Visitors in Museums -- Virtual Fitness Community: Online Behavior on a Croatian Fitness Forum -- An Examination of Gaze during Conversation for Designing Culture-based Robot Behavior -- Investigation on the Fusion of Multi-modal and Multi-person Features in RNNs for Detecting the Functional Roles of Group Discussion Participants -- Exploring Gaze Behaviour and Perceived Personality Traits -- Users of Fitbit Facebook Groups: A Gender- and Generation-Determined Investigation of their Motivation and Need -- Intelligent Automotive Technologies are here, and Drivers are Losing Control -- Emotions in Online Gambling Communities: a Multilevel Sentiment Analysis -- Analysis of the Exposing Media Pattern that Affect Accessing Own Website -- Dynamic Properties of Information Diffusion during the 2019 Halle Terror Attack on Twitter -- Cultural Factors as Powerful Moderators of Romanian Students' Adoption of Mobile Banking in Everyday Life -- Social Behaviour Understanding using Deep Neural Networks: Development of Social Intelligence Systems -- Materialism and Facebook Usage: Could Materialistic and Non-Materialistic Values be Linked to Using Facebook Differently? -- Analyzing #LasTesis Feminist Movement in Twitter using Topic Models -- User-oriented Quality Estimationof Social News Systems and its Content - Gender-dependent Assessment of Reddit -- Defining Network Borders on Instagram: the Case of Russian-Speaking Bloggers with Migration Background -- Effects of Linguistic Proficiency and Conversation Topic on Listener's Gaze in Triadic Conversation -- The Confidence in Social Media Platforms and Private Messaging. .

This two-volume set LNCS 12194 and 12195 constitutes the refereed proceedings of the 12th International Conference on Social Computing and Social Media, SCSM 2020, held as part of the 22nd International Conference, HCI International 2020, which was planned to be held in Copenhagen, Denmark, in July 2020. The conference was held virtually due to the COVID-19 pandemic. The total of 1439 papers and 238 posters have been accepted for publication in the HCII 2020 proceedings from a total of 6326 submissions. SCSM 2020 includes a total of 93 papers which are organized in topical sections named: Design Issues in Social Computing, Ethics and Misinformation in Social Media, User Behavior and Social Network Analysis, Participation and Collaboration in Online Communities, Social Computing and User Experience, Social Media Marketing and Consumer Experience, Social Computing for Well-Being, Learning, and Entertainment.