Jaegwon Kim

(1934 - 2019)

Is social science ‘reducible’ to individual psychology, and ultimately to some physical theory? If a sociological theory, that is, a theory dealing with group phenomena, is ‘reduced’ in a relevant and appropriate sense to individual psychology, could we then say that the social phenomena in the domain of the sociological theory are just psychological phenomena of individuals? Conversely, if social events and processes are just individual psychological events and processes, then does it follow that any theory dealing with the former is ‘reducible’ to some theory dealing with the latter? Analogously, if psychological theory is ‘reducible’ to physical theory, say the neurological theory of the brain and the associated organs, could we say that psychological phenomena are just neurological phenomena in the brain? What of the converse of this question? Further, what is the bearing on these questions of the thesis that there are laws correlating types of social phenomena with types of individual psychological phenomena, or types of psychological phenomena with types of neurological phenomena?

Two concepts of supervenience, "strong supervenience" and "weak supervenience," are characterized and contrasted, And their major properties established. Supervenience as commonly characterized by philosophers is shown to correspond to weak supervenience, Whereas the intended concept is often the stronger relation. Strong supervenience is applied to explicate the notion of "supervenient causation," and it is argued that macro-Causal relations can be understood as cases of supervenient causation, And that causal relations involving psychological events, Too, Can be so understood

This paper argues that since nonphysical souls lack a position in space, they cannot have the pairing relations that would allow them to interact with physical bodies. For example, if two rifles (A and B) are fired at the same time, and consequently Andy and Buddy are killed, we can only say that rifle A killed Andy while rifle B killed Buddy, rather than the other way around, if there are appropriate spatial relations (such as distance and orientation) that pair Andy’s death to A’s firing, and Buddy’s death to B’s firing. But no such pairing relations are available to nonphysical minds that lack spatial positions altogether. And attributing spatial location to nonphysical souls raises more problems than it solves, such as how to find particular souls at particular locations, how souls taken to be geometric points in space could retain enough structure to have sufficient causal powers to influence bodies, and why spatial entities more robust than points shouldn’t simply be conceived of as exotic physical entities like astral bodies. 1. The Problem -- 2. Descartes and Mental Causation -- 3. Causation and the “Pairing” Problem -- 4. Causation and Space -- 5. Can We Locate Souls in Space?