Research that finds out how often and where something (like a race or an age or a behavior) shows up; this kind of study doesn’t look at “cause” and “effect,” and is not “experimental.
a study that focuses on a particular situation or set of situations, reports on important aspects observed, and attempts to determine the interrelationships among them.
A nonexperimental study in which variables or subject characteristics are examined as they naturally occur for the purpose of describing or comparing samples or examining relationships among a set of variables.
Any study that is not truly experimental (e.g., quasi-experimental studies, correlational studies, record reviews, case histories, and observational studies).