Source : Webster's Revised Unabridged Dictionary (1913)

Mentality \Men*tal"i*ty\, n.
   Quality or state of mind. ``The same hard mentality.''
   --Emerson.

Source : WordNet®

mentality
     n 1: a habitual or characteristic mental attitude that determines
          how you will interpret and respond to situations [syn: {outlook},
           {mindset}, {mind-set}]
     2: mental ability; "he's got plenty of brains but no common
        sense" [syn: {brain}, {brainpower}, {learning ability}, {mental
        capacity}, {wit}]