Although self-regulation improves gradually throughout childhood and adolescence, early childhood is a crucial period for its development'a time when children learn to overcome impulses by thinking before they act.
( ( Although ( self-regulation ( ( improves gradually ) ( throughout ( ( childhood and ) adolescence ) ) ) ) ) ( , ( ( early childhood ) ( ( is ( ( a ( crucial period ) ) ( for ( ( ( its ( development ' ) ) ( a time ) ) ( when ( children ( learn ( to ( ( overcome impulses ) ( by ( thinking ( before ( they act ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Although) (S (NP (NN self-regulation)) (VP (VBZ improves) (ADVP (RB gradually)) (PP (IN throughout) (NP (NN childhood) (CC and) (NN adolescence)))))) (, ,) (NP (JJ early) (NN childhood)) (VP (VBZ is) (NP (NP (DT a) (JJ crucial) (NN period)) (PP (IN for) (NP (NP (PRP$ its) (NN development) (POS ')) (NP (DT a) (NN time)) (NP (SBAR (WHADVP (WRB when)) (S (NP (NNS children)) (VP (VBP learn) (S (VP (TO to) (VP (VB overcome) (NP (NNS impulses)) (PP (IN by) (S (VP (VBG thinking) (SBAR (IN before) (S (NP (PRP they)) (VP (VBP act)))))))))))))))))) (. .)))
Early childhood is not a crucial period for children's development at all.
( ( Early childhood ) ( ( ( is not ) ( ( a ( crucial period ) ) ( for ( ( ( children 's ) development ) ( at all ) ) ) ) ) . ) )
(ROOT (S (NP (RB Early) (NN childhood)) (VP (VBZ is) (RB not) (NP (NP (DT a) (JJ crucial) (NN period)) (PP (IN for) (NP (NP (NP (NNS children) (POS 's)) (NN development)) (ADVP (IN at) (DT all)))))) (. .)))