What does “cause” mean and why is it an important concept in research? How are correlation and causation related?
You are a researcher interested in addressing the question: does smiling cause mood to rise (i.e., become more positive)? Sketch between-participants, within-participants, and matched-participants designs that address this question and discuss the advantages and disadvantages of each to yielding data that help you answer the question. Describe and discuss each design in 4-5 sentences.
This question was asked on Jul 10, 2013.
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