Correlational research.

positive or negative. In a positive correlation, factors A and B vary together in the same direction. For example, as the mother’s anxiety over her child’s forthcoming surgery increases (or decreases), the child’s anxiety will also increase (or decrease). In a negative correlation, factors A and B vary together but in opposite directions; as A increases, B decreases. An example of a negative correlation would be when a favorable prognosis decreases as the patient’s age increases.