Source : Webster's Revised Unabridged Dictionary (1913)

Affectedness \Af*fect"ed*ness\, n.
   Affectation.

Source : WordNet®

affectedness
     n 1: the quality of being false or artificial (as to impress
          others) [ant: {unaffectedness}]
     2: a deliberate pretense or exaggerated display [syn: {affectation},
         {mannerism}, {pose}]