Explain the key differences between the observational study and the experimental study: Applied Quantitative Methods Assignment, MMU, UK

Question 1.

The following link contains a summary of findings from research on the buggy direction and child development (also available in a PDF file on Moodle):

Explain the key differences between the observational study and the experimental study and how these differences can affect what conclusions can be drawn from the findings.
If a larger scale experiment was conducted to examine the effect of buggy direction on parent-child interaction, should this employ a within-participants or between-participants design? Discuss the advantages and disadvantages of each approach, including how any disadvantages could be addressed in the way the experiment is conducted.

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