Genotype distribution split for boys and girls.

<p>Genotype distribution split for boys and girls.</p

Correlations Among Model Variables Split for Boys and Girls.

<p><i>Note. BDNF</i> = Brain Derived Neurotrophic Factor gene. Correlations for girls are depicted above the diagonal, below the diagonal the correlations for boys.</p>a<p>0 = ValVal; 1 = ValMet and MetMet.</p><p>*<i>p</i><.05. **<i>p<</i>.01. ***<i>p<</i>.001.</p

Interactions between <i>BDNF</i> genotype and sex on intercept of loneliness.

<p>Interactions between <i>BDNF</i> genotype and sex on intercept of loneliness.</p

Bivariate correlations among study variables.

<p><i>Note</i>. The numbers in the top row of the table correspond to the variables in the first column. DRD4 7-repeat allele is code 0 = 7 repeat allele absent, 1 = 7-repeat allele present. *  =  <i>p</i><.05, **  =  <i>p</i><.01, two-tailed tests. †  =  marginally significant.</p

Moderation of the DRD4 7-repeat allele on the link between parental monitoring and growth in frequency of cannabis use.

<p>Moderation of the DRD4 7-repeat allele on the link between parental monitoring and growth in frequency of cannabis use.</p

Proportion of lifetime users of cannabis at study year of assessment, separated for carriers and non-carriers of the DRD4 7-repeat allele, under conditions of low versus high levels of parental monitoring.

<p>Proportion of lifetime users of cannabis at study year of assessment, separated for carriers and non-carriers of the DRD4 7-repeat allele, under conditions of low versus high levels of parental monitoring.</p

Means and Standard Deviations.

<p><i>Note</i>. Duration values for observation predictors are in seconds.</p

Descriptives.

<p><i>Note</i>. Based on the total sample (n = 428).</p

Linear regression of DRD4 and paternal and maternal monitoring on intercept and slope of cannabis use controlling for covariates.

<p><i>Note</i>. I  =  Intercept, S  =  Slope. I and S are the dependent variables in the eight separate linear regression models.</p>*<p> =  <i>p</i><.05, **  =  <i>p</i><.01, ***  =  p<.001, two-tailed tests.</p

Results for the Multilevel Proportional Hazard Model analyses on breakup regarding conflict resolution and conflict recovery.

<p>Results for the Multilevel Proportional Hazard Model analyses on breakup regarding conflict resolution and conflict recovery.</p