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Full Idea
One often finds a supervenience thesis concerning the relation between mental and physical properties combined with a token identity theory concerning the relation between mental and physical particulars.
Clarification
'Token identity' asserts identity with something, but of no particular type
Gist of Idea
Supervenience of mental and physical properties often comes with token-identity of mental and physical particulars
Source
Mark Rowlands (Externalism [2003], Ch.2)
Book Ref
Rowlands,Mark: 'Externalism' [Acumen 2003], p.21
A Reaction
This brings out the important clarifying point that supervenience is said to be between properties, not substances. The point is that supervenience will always cry out for an explanation, preferably a sensible one.