( ( ( The change ) ( in feedback ) ) ( ( was ( described ( as ( ( positive and ) definite ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN change)) (PP (IN in) (NP (NN feedback)))) (VP (VBD was) (VP (VBN described) (PP (IN as) (NP (JJ positive) (CC and) (JJ definite))))) (. .)))
The change in feedback was described as positive and definite.
(ROOT (S (NP (JJ Positive) (NN feedback)) (VP (VP (VBZ intensifies) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (NP (DT the) (NN body) (POS 's)) (JJ physiological) (NN condition))))) (CONJP (RB rather) (IN than)) (VP (VBG reversing) (NP (PRP it)))) (. .)))