Correlation: A statistical measure that indicates the extent to which two or more variables fluctuate together. It ranges from -1 to 1, with -1 indicating a perfect negative correlation, 0 indicating no correlation, and 1 indicating a perfect positive correlation.
Causation:The relationship between two variables where one variable directly causes the other. In correlational research, the researcher cannot determine causation, only the strength and direction of the relationship between variables.
Observational Research:A type of research where the researcher observes and records the behavior of participants without intervening or manipulating the variables. Correlational research is a form of observational research.