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Contrast longitudinal studies and cross-sectional studies. How do these studies differ?
Longitudinal studies are 1.considered experimental; cross-sectional studies are not experimental.
2.Longitudinal studies determine cause and effect; cross-sectional studies
determine correlation.
3.Longitudinal studies are relatively inexpensive; cross-sectional studies are very expensive.
4.Longitudinal studies last for years; cross-sectional studies are relatively quick.