“I guess my question is”: What is the co-occurrence of uncertainty and learning in computer-mediated discourse? Michelle E. Jordan & An-Chih Janne Cheng & Diane Schallert & Kwangok Song & SoonAh Lee & Yangjoo Park Received: 24 January 2014 /Accepted: 20 October 2014 # International Society of the Learning Sciences, Inc. 2014 Abstract The purpose of this study was to contribute to a better understanding of learning in computer-supported collaborative learning (CSCL) environments by investigating the co-occurrence of uncertainty expressions and expressions of learning in a graduate course in which students collaborated in classroom computer-mediated discussions. Results showed that uncertainty expres- sions appeared related to the kinds of intellectual work engaged by students in online discussion, co- occurring with learning in systematic ways. For example, direct expressions of uncertainty were likely to co-occur with learning categories associated with presenting a new idea and with applications of an idea whereas indirect expressions were more strongly associated with elaborating on a new idea. These findings suggest that the ability to deal with and express uncertainty appropriately may be Intern. J. Comput.-Support. Collab. Learn. DOI 10.1007/s11412-014-9203-x M. E. Jordan (*) Mary Lou Fulton Teachers College, Farmer Education Building, Arizona State University, 1050 S Forest Mall, Tempe, AZ 85287-1811, USA e-mail: michelle.e.jordan@asu.edu A.<C. J. Cheng DePaul University, Chicago, IL, USA e-mail: accheng@depaul.edu D. Schallert University of Texas at Austin, Austin, TX, USA e-mail: dschallert@austin.utexas.edu K. Song Arkansas State University, Jonesboro, AR, USA e-mail: ksong@astate.edu S. Lee Chonnam National University, Gwangju, South Korea e-mail: purebabygogo@gmail.com Y. Park Institute of Distance Education, Korea National Open University, Seoul, South Korea e-mail: yjpark90@gmail.com