learned response

NOUN
16 LETTERS · STARTS WITH L

learned response is a valid 16-letter word worth 18 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1E1A1R1N1E1D2R1E1S1P3O1N1S1E1
1 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does learned response mean?