A structural equation model was used to longitudinally investigate the relationship between parents’ ad evaluations and their communications with their children about marijuana. Over 1,300 parent-child dyads were included in the analyses. Initial analyses indicate that the model—including parents’ ad evaluation, attitudes toward discussing marijuana use with their children, intentions to discuss marijuana use with their children, and subsequent parent-child discussion of marijuana use fits the data (CFI=.970, RMSEA=.053, X2=273.54, df=23, p<.001). More specifically, results of the analysis reveal that ad evaluation is significantly linked to the frequency and breadth of discussions that took place one year later. In addition to the direct path of ad evaluation to discussion, ad evaluations also influence parents’ attitudes toward discussing drugs (β=.11, p<.001) with their children which then also significantly influence their intentions to do so (β =.63, p<.005). Intentions are also directly impacted by parents’ ad evaluations (β =.05, p<.001). Of special relevance is the impact on actual parent-child discussions in the following year; intentions in Year 1 significantly influence Year 2 discussion (β =.23, p<.001).
Together with our earlier research highlighting the importance of ad evaluation on adolescent responses to marijuana prevention ads, results of the current study provide evidence for the importance of research ad responses in prevention campaign impact. It is hoped that this research will serve as a further impetus for research on ad characteristics evoking favorable responses from target audiences that can then influence behavioral outcomes.