Substance Abuse Vulnerability Assessment View Calculator Children will abuse drugs, alcohol, or other substances for many reasons and every child is susceptible to abusing substances. Some, however, are at more risk than others. How can you tell if a child you know has a high vulnerability to abusing drugs or alcohol? Take this quick assessment to learn more about the characteristics of children who are highly vulnerable to substance abuse and help you determine if a child you know may be at risk to develop substance abuse. Learn more about putting this calculator or other calculators on your website.