Source : Webster's Revised Unabridged Dictionary (1913)

Receptiveness \Re*cep"tive*ness\, n.
   The quality of being receptive.

Source : WordNet®

receptiveness
     n : willingness or readiness to receive (especially impressions
         or ideas); "he was testing the government's receptiveness
         to reform"; "this receptiveness is the key feature is
         oestral behavior, enabling natural mating to occur";
         "their receptivity to the proposal" [syn: {receptivity},
         {openness}]