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Longitudinal as the term suggests is used to describe a variety of studies conducted over a period of time. The design gathers data over an extended period of time mainly developmental. The short-term investigation may take several weeks or months while the long term goes over years. Longitudinal surveys are important in understanding stages of development.
Cross-sectional surveys are designed to study different respondents at the same time or at different points in time across different groups. They could be used to study for example development in children across cultures to understand the influence of culture on cognitive development.
Chatelaine answered the question on June 16, 2021 at 12:08
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