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 adults are unable to handle imaginary play due to their self-control levels.
( Vygotsky ( ( believes ( that ( adults ( are ( unable ( to ( handle ( ( imaginary play ) ( due ( to ( their ( self-control levels ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Vygotsky)) (VP (VBZ believes) (SBAR (IN that) (S (NP (NNS adults)) (VP (VBP are) (ADJP (JJ unable) (S (VP (TO to) (VP (VB handle) (S (NP (JJ imaginary) (NN play)) (ADJP (JJ due) (PP (TO to) (NP (PRP$ their) (JJ self-control) (NNS levels))))))))))))) (. .)))