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Question: research scenario a developmental psychologist is studying whether attachment can...

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Research Scenario: A developmental psychologist is studying whether attachment can be improved upon by providing a parent training course. He has 8 parents who are seeking services to improve their children’s attachment to them. He uses a measure of which higher scores indicate more secure attachments to caregivers and gave it to them before and after the 4 week parent training course. The attachment scores data are presented below for Before and After the parent training course. The data are normally distributed. Did the parent training course improve attachment?

Before

After

13

15

15

16

17

17

11

15

12

10

16

14

13

17

15

15

Answer the following questions based on the provided scenario.

Use the output to calculate r2 (show your work in the space provided). Interpret it (small, medium, large) based on the conventions for this effect size calculation.

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