Answer:
The difference between longitudinal and cross- sectional research is that longtiudinal research gathers data on the same subject more than once, while cross- sectional research gathers data on the subject only once.
Answer:
Longitudinal studies observe and analyze sample data over a period of time, whereas cross-sectional studies observe sample data one time and compare the data with other groups.
Explanation:
on edge 2021 psychology el2084 a
