• empirical
  • Although modern research fails to verify Berkeley's emphasis on reason as central to perception, contemporary theories still include both nativistic (inborn) and empirical (learned through experience) considerations. (britannica.com)
  • depth
  • Centuries of experimental research led to a more tenable conception in which space was described in terms of three dimensions or planes: height (vertical plane), width (horizontal plane), and depth (sagittal plane). (britannica.com)
  • physical
  • Without some degree of veridicality concerning physical space, one cannot seek food, flee from enemies, or even socialize. (britannica.com)