noun (n)

• paying particular notice (as to children or helpless people)(noun.cognition)

  Example:
  His attentiveness to her wishes.
  

  Synonym:
  heed, paying attention, regard
  Antonym:
  heedlessness, inattentiveness
  

  source: wordnet30
• the trait of being considerate and thoughtful of others(noun.attribute)

  source: wordnet30
• the trait of being observant and paying attention(noun.attribute)

  Antonym:
  inattentiveness
  

  source: wordnet30