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Full Idea
In general the two criteria of memory and bodily identity work together.
Gist of Idea
Bodily identity and memory work together to establish personal identity
Source
A.J. Ayer (The Central Questions of Philosophy [1973], §VI.B)
Book Ref
Ayer,A.J.: 'The Central Questions of Philosophy' [Penguin 1976], p.116
A Reaction
This seems better than any simplistic one-criterion approach. In life we use different criteria for our own identity, as when dreaming, or waking with a hangover, or wondering if we are dead after an accident.