> Yes, this is similar to the "Wigner's friend" thought-experiment. 

Wigner later (1983) changed opinion and wrote 
that decoherence forbids superposition of states like      
     c1 |s 1> |friend 1> + c2 |s 2> |friend 2>
After that in QM the "conscious" being  - i.e. the "friend" 
who tells that  he already "knows" whether the outcome is 
|s 1> or |s 2> - plays no role. Von Neumann, London,
Bauer, Wigner thought (and many more still think) that 
consciousness was able to "collapse" a superposition 
(E.P.W., Collected Papers, VI, pages 225-244)

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