“…The moderators could include the sex of the child and the sex of the parent (Cummings, Schermerhorn, & Keller, 2008 ;Hastings & De, 2008 ;Kochanska et al, 2008 ;McElwain, Halberstadt, & Volling, 2007 ;Nelson, Hart, Wu, et al, 2006 ). There have also been continuing issues about the combined and separate contributions of mother -child and father -child relationships Lamb, 2004 ;Papp, Cummings, & Goeke -Morey, 2005 ;Ryan, Martin, & Brooks -Gunn, 2006 ). Culture is also a possible moderator of parental infl uences Nelson, Hart, Wu, et al, 2006 ).…”