My research question:
Are developmental delays common among children who were separated from their parents at the U.S./Mexico border?
(OR more broadly, Is there a relationship between early childhood trauma and developmental delays?; then draw conclusions about the more specific question above using the evidence you find.)
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.
("early childhood trauma" OR "adverse childhood experiences" OR ace) AND ("developmental delays" OR "developmental skills")
How do I find an empirical article?
Some databases (e.g. PsycInfo, PubMed) have a special limit for different types of articles.