Using a linear impedance‐pneumograph taped to the mandible, the mandibular movements for normal and 3 differing types of /s/‐misarticulating children were measured as they spoke sentences containing /s/ in a wide variety of cluster and vowel contexts, with varying stress and juncture, at two differing tempii of production. Simultaneous audio/jaw displacement recordings reveal that the /s/‐defective children, if anything, are somewhat less context sensitive in their /s/‐target positions than are normals, and their abnormal mandible targets for /s/ are as stable as those for normal speaking children. Results are discussed in terms of current speculations concerning defective articulation development.