He inspired more research on children's thinking than any other single theorist.
( He ( ( ( ( inspired ( more research ) ) ( on ( ( children 's ) thinking ) ) ) ( than ( any ( other ( single theorist ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD inspired) (NP (JJR more) (NN research)) (PP (IN on) (NP (NP (NNS children) (POS 's)) (NN thinking))) (PP (IN than) (NP (DT any) (JJ other) (JJ single) (NN theorist)))) (. .)))
Freud alone inspired more research on child psychology than any other psychologists.
( Freud ( alone ( ( ( ( inspired ( more research ) ) ( on ( child psychology ) ) ) ( than ( any ( other psychologists ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Freud)) (ADVP (RB alone)) (VP (VBD inspired) (NP (JJR more) (NN research)) (PP (IN on) (NP (NN child) (NN psychology))) (PP (IN than) (NP (DT any) (JJ other) (NNS psychologists)))) (. .)))