Hello, CSCW is the premier international venue for research in the design and use of technologies that affect groups, organizations, communities, and networks. We invite authors to submit their best research on all topics relevant to collaborative and social computing. Accepted papers are published in two annual CSCW issues of the Proceedings of the ACM on Human Computer Interaction (PACM HCI). Submissions are accepted at four deadlines per year. The upcoming deadline is October 15, 2020, which will be followed by January 15, April 15, and Jul 15, 2021. Submissions accepted for publication in the October 2020, January 2021 and April 2021 cycles will be invited to present at CSCW 2021. Papers accepted from July 2021 onwards will be invited to present at CSCW 2022. *Please consult the CSCW website here <https://cscw.acm.org/2021/index.php/papers/?fbclid=IwAR0BNLZgJQwKRqkkyxTw_tDJRcfqEGljgv8PwiTg4LUE_QxwXktimPwRd-8> for comprehensive details.* *CALL FOR PAPERS*We invite authors to submit papers that inform the design or deployment of collaborative or social systems; introduce novel systems, interaction techniques, or algorithms; or, study existing collaborative or social practices. The scope of CSCW 2021 includes social computing and social media, crowdsourcing, open and remote collaboration, technologically-enabled or enhanced communication, such as video-conferencing and other remote-presence technologies, CSCL, MOOCs and related educational technologies, multi-user input technologies, collocated work practices, work articulation and coordination, awareness, and information sharing. This scope spans socio-technical domains of work, home, education, healthcare, the arts, sociality, entertainment, and ethics. Papers can report on novel research results, designs, systems, or new ways of thinking about, studying, or supporting shared activities. CSCW encourages papers that make a contribution to building CSCW systems, including (but not limited to) engineering and technical enablers for CSCW applications, methods and techniques for new CSCW services and applications, and evaluation of both early-stage and fully-built CSCW systems in lab or field settings. To support diverse and high-quality contributions, CSCW uses a minimum of two-cycle review process with opportunity for major revisions reviewed by the same reviewers. Additionally, no arbitrary length limit is imposed on submissions. Accepted papers are published in the Proceedings of the ACM: Human Computer Interaction (PACM HCI) journal. We invite contributions to CSCW across a variety of research techniques, methods, approaches, and domains, including: - Social and crowd computing. Studies, theories, designs, mechanisms, systems, and/or infrastructures addressing social media, social networking, wikis, blogs, online gaming, crowdsourcing, collective intelligence, virtual worlds or collaborative information behaviors. - System development. Hardware, architectures, infrastructures, interaction design, technical foundations, algorithms, and/or toolkits that enable the building of new social and collaborative systems and experiences. - Theory. Critical analysis or theory with clear relevance to the design or study of social and collaborative systems, within and beyond work settings. - Empirical investigations. Findings, guidelines, and/or studies of practices, communication, collaboration, or use, as related to collaborative technologies. - Data mining and modeling. Studies, analyses and infrastructures for making use of large- and small-scale data. - Methodologies and tools. Novel methods, or combinations of approaches and tools used in building collaborative systems or studying their use. - Domain-specific social and collaborative applications. Including applications to healthcare, transportation, gaming, ICT4D, sustainability, education, accessibility, global collaboration, or other domains. - Collaboration systems based on emerging technologies. Mobile and ubiquitous computing, game engines, virtual worlds, multi-touch, novel display technologies, vision and gesture recognition, big data, MOOCs, crowd labor markets, SNSs, or sensing systems. - Ethics and policy implications. Analysis of the implications of socio-technical systems and the algorithms that shape them. - Crossing boundaries. Studies, prototypes, or other investigations that explore interactions across disciplines, distance, languages, generations, and cultures, to help better understand how to transcend social, temporal, and/or spatial boundaries. *Please reach out to papers2021@cscw.acm.org <papers2021@cscw.acm.org> for queries about paper submissions.* Best, CSCW 2021 Communication and Outreach Co-Chairs Nazanin Andalibi, Mateusz Dolata, and Konstantinos Papangelis Nazanin Andalibi, Ph.D. Assistant Professor University of Michigan School of Information 3372 North Quad Website: https://www.nazaninandalibi.net/ Pronouns: She/Her *Affiliate faculty:* Digital Studies Institute Center for Social Media Responsibility Center for Ethics, Computing and Society