Refers to aspects in an individual's life which encourage or deter them from using substances.

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  Students Who Have One Best Friend that Tried to Do Well in School

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  Students Who Have Seen Other Students Be Physically Bullied

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  Trends in Perceived Risk of Harm due to Marijuana, by Gender and Race / Ethnicity

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  Age of Onset of Alcohol and Marijuana Use

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  Available Neighbors Students Feel They Can Talk To

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  Negative Perception of Consumption by Peers

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