Compared three groups of high school students: frequent movers (6 to 13 relocations), moderate movers (3 to 5 relocations), and nonmovers on depression, appraised social support, and participation in extracurricular activities. Concludes that there is little current or prior research evidence that high rates of social mobility are associated with long-term social adjustment problems for adolescents. (Contains 41 references and 5 tables.) (GCP)