Most research linking early pubertal development to substance use has focused on the effects of pubertal timing (age at which a certain stage of pubertal development is reached or pubertal status at a particular age-related to the maturation disparity hypothesis), but little research has focused on pubertal tempo (rate of growth through pubertal stages-related to the maturation compression hypothesis). However, both timing and tempo have not only been identified as important components of pubertal development, with different predictors, but have also been shown to be independently associated with other adolescent psychopathologies. Using latent growth-curve modeling, this study examined how pubertal status at age 12 and pubertal tempo (between 11 and 13 years) related to substance use from 15 to 16 years in boys from low socioeconomic backgrounds (N = 871). Results showed that both pubertal status at age 12 and tempo were significant predictors of increased levels of substance use and problems in mid to late adolescence. In an attempt to identify mechanisms that may explain the association between pubertal development and substance use it was found that sensation seeking partially mediated the association between pubertal status at age 12 and substance use behaviors. Impulse control was found to moderate the association sensation seeking had with marijuana use frequency, with high Correspondence concerning this article should be addressed to Natalie Castellanos-Ryan, Centre de recherche du CHU Ste-Justine, Université de Montréal, 3175 Chemin de la Côte Sainte-Catherine, Montréal, H3T 1C5, Canada. natalie.castellanos.ryan@umontreal.ca. The authors report no potential conflicts of interest.
CIHR Author ManuscriptCIHR Author Manuscript CIHR Author Manuscript sensation-seeking scores predicting higher marijuana use frequency only at low levels of impulse control. These findings highlight the importance of considering multiple sources of individual variability in the pubertal development of boys and provide support for both the maturational disparity and compression hypotheses.
Keywordsadolescence; puberty; substance use; impulsivity; sensation seekingAdolescence is an important developmental period for the onset of substance use and misuse, with some considering exploratory drug use as normative during this period (e.g., Shedler & Block, 1990). Some Canadian statistics show that 42% of adolescents attending Grades 9 through 11 (or 3-5 of high school) have used cannabis in the last year, and by Grade 11, 86% of them were drinking alcohol (Dubé et al., 2009). Similarly, epidemiologic studies in the United States show that up to 50% of high school students report binge drinking, and around 25% report having tried an illicit substance (Office of National Statistics, 2008; U.S. Department of Health and Human Services, 2007). Youth substance use is also prevalent in Europe, with almost half of all young people in the United Kingdom trying an illegal drug by the age of 16 years and around one third of adolescents ...