Short leaves of 6 weeks or less (the norm in the United States) were linked to maternal anxiety and depression and negative interactions with babies.
( ( ( ( Short leaves ) ( of ( 6 ( weeks ( or less ) ) ) ) ) ( -LRB- ( ( ( the norm ) ( in ( the ( United States ) ) ) ) -RRB- ) ) ) ( ( were ( ( linked ( to ( maternal ( anxiety ( and ( depression ( and ( negative interactions ) ) ) ) ) ) ) ) ( with babies ) ) ) . ) )
(ROOT (S (NP (NP (NP (JJ Short) (NNS leaves)) (PP (IN of) (NP (CD 6) (NNS weeks) (QP (CC or) (JJR less))))) (PRN (-LRB- -LRB-) (NP (NP (DT the) (NN norm)) (PP (IN in) (NP (DT the) (NNP United) (NNPS States)))) (-RRB- -RRB-))) (VP (VBD were) (VP (VBN linked) (PP (TO to) (NP (JJ maternal) (NN anxiety) (CC and) (NN depression) (CC and) (JJ negative) (NNS interactions))) (PP (IN with) (NP (NNS babies))))) (. .)))
A few weeks away from the child had negative effects on babies.
( ( A ( few weeks ) ) ( ( away ( from ( the child ) ) ) ( ( had ( ( negative effects ) ( on babies ) ) ) . ) ) )
(ROOT (S (NP (DT A) (JJ few) (NNS weeks)) (ADVP (RB away) (PP (IN from) (NP (DT the) (NN child)))) (VP (VBD had) (NP (NP (JJ negative) (NNS effects)) (PP (IN on) (NP (NNS babies))))) (. .)))