Is there a relationship between childhood neglect and substance abuse later in life?
Step 1: Break up this research question into two or three main concepts. Ignore extraneous words.
Step 2: Conduct an initial search with these words, and quickly scan the results.
Step 3: Using information from your initial search, add synonyms, acronyms, and variant spellings.
(child* OR kid* OR youth*) AND (neglect* OR abandon* OR inattenti*) AND ("substance abuse" OR addict* OR "drug use" OR alcoholi*)