Arcari, A., & Combs, A. (1999, August). The colors of consciousness. Paper presented at the annual meeting of the International Society of Systems Sciences, Asilomar, California.
Combs, A. (2000, October). Jean Gebser: Inner and outer realities. Plenary talk given at The Jean Gebser Symposium 2000 , Dresden, Germany.
Combs, A. (2001, Oct.). Autopoietic processes in consciousness, the brain, and development. Paper presented at the HDP Dynamic Development Research Group, Harvard University, Cambridge, MA.
Combs, A. (2001, May). An evolutionary view of human consciousness as seen through art and history. Paper presented at the Semi-annual Thematic Conference of The Standing Conference on Educational Research: New England Section, Yale University, New Haven, CT.
Combs, A., & Brier, S. (2001, July). Consciousness, information, and the brain: A Peircian semiotic paradigm; An FIS contribution. Paper presented at the annual meeting of the International Society of Systems Sciences, Asilomar, California.