====== PSYCHOLOGICAL  MOTIVATION / MOTIVATION  ======

      *  achievement
      *  aspirations (psychology)
      *  conflict (psychology)
      *  drive
        *  hunger
        *  thirst
      *  exploratory behavior
      *  food deprivation
      *  goals
      *  handling (psychology)
      *  instinct
      *  intention
      *  power (psychology)
      *  water deprivation