Atoms, molecules, organisms distinguish layers of reality because of the causal links that govern their behavior, both horizontally (atom-atom, molecule-molecule, organism-organism) and vertically (atom-molecule-organism). This is the first intuition of the theory of levels. Even if the further development of the theory will require imposing a number of qualifications to this initial intuition, the idea of a series of entities organized on different levels of complexity will prove correct. Living systems as well as social systems and the human mind present (...) features remarkably different from those characterizing non-living, simple physical and chemical systems. We propose that super-complexity requires at least four different categorical frameworks, provided by the theories of levels of reality, chronotopoids, (generalized) interactions, and anticipation. (shrink)

Davis, Allen, and Newman raise significant empirical questions. I agree with Davis that the operational definition of unconsciousness is criterion-dependent, and that the criterion can be set more conservatively than I did here. Contrastive analysis would still work if we compared clearly "conscious" to "much less conscious" phenomena. I agree with Velmans and Mangan that contrastive analysis involves the subject's first-person perspective --- that is why we study consciousness, after all --- but a rigorous physicalist could equally well trace the (...) logic from behaviorally defined operations to the first-person perspective. There is no principled disconnect between these two perspectives on the evidence, and we know from almost two centuries of psychophysical research that there is rarely any mismatch in scientific practice. I am very encouraged by the ease of communication in these commentaries. Bringsjord's challenge seems to involve a difference of views on what are the most interesting questions. (shrink)

This is a bibliography of books and articles on consciousness in philosophy, cognitive science, and neuroscience over the last 30 years. There are three main sections, devoted to monographs, edited collections of papers, and articles. The first two of these sections are each divided into three subsections containing books in each of the main areas of research. The third section is divided into 12 subsections, with 10 subject headings for philosophical articles along with two additional subsections for articles in cognitive (...) science and neuroscience. Of course the division is somewhat arbitrary, but I hope that it makes the bibliography easier to use. This bibliography has first been compiled by Thomas Metzinger and David Chalmers to appear in print in two philosophical anthologies on conscious experience . From 1995 onwards it has been continuously updated by Thomas Metzinger, and now is freely available as a PDF-, RTF-, or HTML-file. This bibliography mainly attempts to cover the Anglo-Saxon and German debates, in a non-annotated, fully formatted way that makes it easy to "cut and paste" from the original file. To a certain degree this bibliography also contains items in other languages than English and German - all submissions in other languages are welcome. Last update of current version: July 13th, 2001. (shrink)