at·ten·tive 
(ə-tĕntĭv)
(ə-tĕntĭv)adj.
1. Paying close attention; alert or observant: an attentive listener; attentive to detail. See Synonyms at careful.
2. Showing care for the needs or desires of others; caring or courteous. See Synonyms at thoughtful.
at·tentive·ly adv.
at·tentive·ness n.