The term naturalistic observational research is used to refer to several different types of non-experimental studies in which behavior is systematically observed and recorded. The goal of this observational research is to describe a variable or set of variables without changing or controlling any aspect of the variables being studied.
A correlational analysis is a <em>kind of study design in which a researcher tries to understand what other kind of associations naturally occurring variables have with each other.</em>
Simply put, correlation analysis attempts to establish if two or more factors are connected or linked and, if so, in what manner.