Path analytic model of variables theorized to predict adolescent prescription stimulant misuse. Bold β weights represent participants ages 15–17; italicized β weights represent respondents ages 12–14. For diagrammatic clarity, the correlation of error terms between monitoring and warmth (r = .35, p < .001) and between social ties and individual factors (r = .47, p < .001) are not displayed. Note: Solid paths are statistically significant for all respondents; values are standardized β weights; p < .05*, p < .01**, p < .001***.