Part Three: Cumulative Homework Problem Set 1: Choose the correct method from te
ID: 3055534 • Letter: P
Question
Part Three: Cumulative Homework Problem Set 1: Choose the correct method from tests learned in previous modules. 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 coursc. Did the parent training course improve attachment? Before 13 17 12 After 15 16 17 15 10 16 17 15 15 a. b. c. Paste appropriate SPSS output. (4) Paste appropriate SPSS graph. (4) Write an APA-style Results section based on your analyses. All homework "Results scctions" should follow the cxamplc given in the SPSS tutorials and the Course Content document "Writing Results of Statistical Tests in APA Format" (note: you do not have to refer to a figure). Remember to include a decision about the null hypothcsis. Submit this assignment by 11:59 p.m. (ET) on Sunday of Modulc/Weck 2.Explanation / Answer
Here we use Paired t-test.
H0: the parent training course did not improve attachment.
vs H1:the parent training course improve attachment.
Paired Samples Statistics
Mean N Std. Deviation Std. Error Mean
Pair 1 Before 14.0000 8 2.07020 0.73193
After 14.8750 8 2.23207 0 .78916
Paired Samples Correlations
N Correlation Sig.
Pair 1 Before & After 8 0.402 0.324
Paired Samples Test
Paired Differences
95% Confidence Interval
of the Difference
Mean Std. Deviation Std. Error Mean Lower Upper t df Sig.(2-tailed)
Pair 1 Before - After -0.87500 2.35660 0.83318 -2.84517 1.09517 -1.050 7 0.329
Conclusion: As Sig.(2- tailed)=0.329> alpha=0.05 , we fail to reject H0.
and conclude that the parent training course did not improve attachment.