It is based on an array of selective and equivocal findings, mustered to convince readers that parenting eects are confined to how children behave in parents' presence and do not extend beyond the home.
( It ( ( is ( ( ( ( ( based ( on ( ( an array ) ( of ( ( ( selective and ) equivocal ) findings ) ) ) ) ) , ) ( mustered ( to ( ( convince readers ) ( that ( ( parenting eects ) ( are ( confined ( to ( how ( children ( behave ( in ( ( parents ' ) presence ) ) ) ) ) ) ) ) ) ) ) ) ) ) and ) ( ( do not ) ( extend ( beyond ( the home ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (VP (VP (VBN based) (PP (IN on) (NP (NP (DT an) (NN array)) (PP (IN of) (NP (ADJP (JJ selective) (CC and) (JJ equivocal)) (NNS findings)))))) (, ,) (VP (VBN mustered) (S (VP (TO to) (VP (VB convince) (NP (NNS readers)) (SBAR (IN that) (S (NP (NN parenting) (NNS eects)) (VP (VBP are) (VP (VBN confined) (PP (TO to) (SBAR (WHADVP (WRB how)) (S (NP (NNS children)) (VP (VB behave) (PP (IN in) (NP (NP (NNS parents) (POS ')) (NN presence))))))))))))))) (CC and) (VP (VBP do) (RB not) (VP (VB extend) (PP (IN beyond) (NP (DT the) (NN home))))))) (. .)))
When a child is bratty, it's an effect of bad parenting. 
( ( When ( ( a child ) ( is bratty ) ) ) ( , ( it ( ( 's ( ( an effect ) ( of ( bad parenting ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (DT a) (NN child)) (VP (VBZ is) (ADJP (JJ bratty))))) (, ,) (NP (PRP it)) (VP (VBZ 's) (NP (NP (DT an) (NN effect)) (PP (IN of) (NP (JJ bad) (NN parenting))))) (. .)))