1. Under what circumstances would a researcher choose a longitudinal study over a cross-sectional study? Give a specific example of a question that could be addressed with a longitudinal study.
1. Under what circumstances would a researcher choose a longitudinal study over a cross-sectional study? Give a specific example of a question that could be addressed with a longitudinal study.
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Transcribed Image Text:1. Under what circumstances would a researcher choose a
longitudinal study over a cross-sectional study? Give a
specific example of a question that could be addressed with
a longitudinal study.
2. Factorial designs allow researchers to study the effects of
more than one independent variable simultaneously. Why
is this advantageous? What information can factorial
designs yield that non-factorial designs cannot?
3. A nutrition researcher is concerned about mistakenly
concluding that a new dietary intervention is effective when
it really is not. What type of error is the researcher
concerned about making (Type I or Type II)? Describe
what the researcher might do to decrease the likelihood of
making that type of error. Discuss ramifications of your
suggested approach for other types of error in the study.
4. Explain why it is important to interpret the findings of a
research project and why these interpretations are an
essential element in a high-quality research report.
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