Alex is wondering how a training class for expectant mothers affects their confidence in caring for their new baby once they have given birth. What kind of design discussed in this chapter might Alex use to research this topic? Is there anything Alex should be careful about when using this design? Explain your answers.
What will be an ideal response?
Alex could use a matched-groups design. One group would take the class and the matched participants would not take any class. He will need to be careful to choose an appropriate matching variable. In this case, he could match the expectant mothers on confidence in dealing with infants before the training class, level of previous experience with infants, and so on.
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