This prospective, longitudinal study investigated the moderating role of pubertal timing on reciprocal links between adolescent appraisals of parent-child relationship quality and girls' (N=1335) and boys' (N=1203) cigarette and alcohol use across a twelve-month period. Reciprocal effects were found between parent-child relations and on-time maturing boys and girls' cigarette and alcohol use, after estimating stability in these constructs across time. Parent-child relationship quality was associated with increased alcohol use twelve months later for early maturing girls. Cigarette and alcohol use were associated with increased problems in the parent-child relationship for late maturing girls. No off-time effects were observed for off-time maturing boys in the pathways between parent-child relationship quality and substance use. Pubertal timing moderated the pathway linking parent-child relationship quality with cigarette use one year later such that the association was stronger for late maturing girls compared to early and on-time maturing girls. The findings indicate interplay between the psychosocial aspects of maturation, family relationships and adolescent substance use and highlight possible gender-specific influences.Early initiation of substance use has been associated with a more rapid progression to heavier use and abuse (Dick, Rose, Viken & Kaprio, 2000;Spear, 2000), has short-and long-term health implications (van den Bree, 2005) and can impact on individual and others' welfare through associations with increased risky behaviour (e.g. sexual, criminal;Patton et al., 2004). Research has shown that the quality of the parent-child relationship and the timing of pubertal maturation relative to one's peers are risk factors for substance use in adolescence. The interplay between these two risk factors in influencing the use of cigarettes and alcohol in early to mid-adolescence is less well understood.
Parent-Child Relations, Cigarette and Alcohol UseChildren from homes characterised by poor family functioning are at increased risk of drug initiation and drug use (Hawkins, Catalano & Miller, 1992). Parent-to-child hostility and an absence of warmth are associated with increased cigarette and alcohol use (Brody & Forehand, 1993;Melby et al. 1993;Shelton et al., 2008). Substance use is argued to offer a means of coping with poor family functioning, but may also reflect increased affiliation with peers (who may themselves experiment with and use substances) to gain social support and a sense of belonging (Brody & Forehand, 1993;Melby et al., 1993). Parent-child relationships that are non-supportive or characterised by conflict can also undermine adolescents' ability to regulate their behaviour in a goal-oriented way, with self-regulation linked in turn to levels of alcohol use (Brody & Ge, 2001 Children influence the parenting they receive, yet little research captures the operation of bidirectional processes operating between family members (O'Connor, 2002). Adolescents who smoke or drink regularly may...