According to Vygotsky, children's greatest self-control occurs during make-believe play.
( ( According ( to Vygotsky ) ) ( , ( ( ( children 's ) ( greatest self-control ) ) ( ( occurs ( during ( make-believe play ) ) ) . ) ) ) )
(ROOT (S (PP (VBG According) (PP (TO to) (NP (NNP Vygotsky)))) (, ,) (NP (NP (NNS children) (POS 's)) (JJS greatest) (NN self-control)) (VP (VBZ occurs) (PP (IN during) (NP (JJ make-believe) (NN play)))) (. .)))
Vygotsky believes that imaginary play is where children exhibit the greatest self-control.
( Vygotsky ( ( believes ( that ( ( imaginary play ) ( is ( where ( children ( exhibit ( the ( greatest self-control ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Vygotsky)) (VP (VBZ believes) (SBAR (IN that) (S (NP (JJ imaginary) (NN play)) (VP (VBZ is) (SBAR (WHADVP (WRB where)) (S (NP (NNS children)) (VP (VB exhibit) (NP (DT the) (JJS greatest) (NN self-control))))))))) (. .)))