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Suppose a researcher asks you to enroll your baby in a 10-year longitudinal study. What factors...

Suppose a researcher asks you to enroll your baby in a 10-year longitudinal study. What factors would lead you to agree and to stay involved? Do your answers shed light on why longitudinal studies often have biased samples? Explain.

Math   Statistics-And-Probability   
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Answer #1

(1) Factors that would lead us to agree and to stay involved:

Longitudinal study allows the researcher to look at changes over time. Thus, it is useful when studying development and lifespan issues. Researcher can look at how certain thingsmay change at different points in life and explore reasons why these development shifts take place.

(2) Non-participation is potentially a source of bias in longitudinal population research. Participation rates decline for a number of reasons and generalizations should be made with care. Including home visits in the protocol can both increase participation and reduce Non-Participation bias.

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