- Assistant professor Harvard University, Cambridge, Massachusetts, 1979-1981, Johns Hopkins University, Baltimore, 1981-1987. Associate professor University Pennsylvania, Philadelphia, 1987-1992, professor philosophy, since 1992.
- The Natural and the Normative: Theories of Spatial Perception from Kant to Helmholtz
- Gary Hatfield examines theories of spatial perception from the seventeenth to the nineteenth century and provides a detailed analysis of the works of Kant and Helmholtz, who adopted opposing stances on whether central questions about spatial perception were amenable to natural-scientific treatment.
- The Natural and the Normative: Theories of Spatial Perception from Kant to Helmholtz by Hatfield, Gary (2003) Paperback
1979 - 1981
1981 - 1987
1987 - 1992