The IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC) is the premier international forum for research on this topic. Established in 1984, the mission of the conference is to support the design, theory, application, and evaluation of computing technologies and languages for programming, modeling, and communicating, which are easier to learn, use, and understand by people. We will hold the IEEE Symposium on Visual Languages and Human-Centric Computing between July 28-Aug 1, 2014 in Melbourne, Australia, co-located with DIAGRAMS 2014
Please see links at top for various information.
A detailed Wed-Fri schedule is available here. THIS MAY CHANGE so please check back closer to the conference (we'll note any changes in the "News" item off the home page)
Below is an overview of the two conferences.