Social learning was studied by cross-yoking the behavior of two individuals in a manual-visual tracking task so that both persons received an immediate combined or systems error feedback of their socially coordinated movements. A laboratory real-time computer system was used to combine the movement-controlled sensory signals of the two subjects in controlling the combined visual error display. The computer system generated a variable sine wave target for which the two subjects had to compensate by coordinate hand motions. Results on 10 two person groups showed that the interactive systems error was effective in producing progressive and significant learning in the social tracking. Significant learning effects did not occur within trial periods. When compared with results of prior research on learning with series-linked social tracking, the results suggest that systems sensory feedback factors of interactive movements, rather than discrete stimulus response and reinforcing rewards, operate as the primary determinants of social guidance and learning. Real-time systems methods of measuring and controlling social interactive feedback have wide application in creating new objective experimental methods of studying various modes of interpersonal and group behavior.