School-based interventions always have low reach because there are only so many schools a researcher can visit.
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Q15: Mass media campaigns involve health practitioners intervening
Q16: As reach increases, effect size decreases.
Q17: Effective campaigns segment the audience.
Q18: Effective campaigns use targeted message design.
Q19: Effective campaigns place messages in all available
Q20: Campaigns and interventions can be effective on
Q22: These days, campaigns and interventions are often
Q23: What is the difference between community-based and
Q24: What is involved in the design, implementation,
Q25: What was the ONDCP Marijuana Initiative? What
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