This symposium is co-sponsored by the Human Performance Modeling Technical Group (HPM-TG) of the Human Factors & Ergonomics Society. Three Research Talks and a Panel Discussion were presented. Each talk used a different style of cognitive modeling and ad- dressed a different problem of interest to the human factors community. For the Panel Discus- sion, three additional members of the HPM-TG joined with our three speakers in a round table discussion of the similarities and differences between cognitive modeling in applied versus basic science.