Neutral : 72, 162,145,183,123,167,76,104 Literature review: A team of researcher
ID: 3226724 • Letter: N
Question
Neutral : 72, 162,145,183,123,167,76,104 Literature review: A team of researchers examined the brain systems involved in human romantic love (Aron et al., 2005). The researchers recruited individuals who had very recently fallen "madly in love." They demonstrated that there were differences in activation level of the caudate while people view their beloved compared to another person they know. As 10 years has pasted, you wish to replicate these results with long- couples (people who have been in a relationship at least 10 years). Study Design: A total of eight (n- participants brought in a picture oftheir beloved with them and a picture of a neutral person. Participants then went into the fMRI machine and the brain was scanned while they looked at the two pictures. While they were in the fMRI machine their brain activation in the caudate area was measured while the participant was viewing both pictures. Analytic plan: Let's use the 4 steps of hypothesis testing (use a 5% significance leve) and a dependent samples a test the research hypothesis that brain activation differs when people beloved compared to another person. We will also compute a measure of effect size and write an interpretation Step 2: State null and hypotheses. the criteria for decision. What is your alpha level? What are your dfs? What is your Tev? Draw and label your sampling distribution. Step 3: Compute descriptive and inferential statistics. Compute the mean and variance of each opndition time point Compute the difference score for each Compute the mean and variance ofthe difference scores. Estimate the standard error, Conduct a dependents samples -test. Step 4: Make a decision. Decide to reject or retain the null hypothesis. Compute a d-effect size Write an interpretation. MacBookExplanation / Answer
X Y Part Beloved Desv Squared Desv Neutral Desv Squared desv 137 129 1 91 -46 2116 72 -57 3249 137 129 2 155 18 324 162 33 1089 137 129 3 152 15 225 145 16 256 137 129 4 190 53 2809 183 54 2916 137 129 5 134 -3 9 123 -6 36 137 129 6 175 38 1444 167 38 1444 137 129 7 99 -38 1444 76 -53 2809 137 129 8 100 -37 1369 104 -25 625 1096 9740 1032 12424 Xbeloved = 137 Xneutral = 129 s^2 beloved = squared/df 152.1875 Wariance Pooled = 173.15625 d= X-Y/Pooled StaDesv = 2.37526278 s^2 neutral = squared/df 194.125 Pooled StaDesv = 13.1588848 Part Beloved Neutral Difference Diff-D D-D^2 1 91 72 19 11 121 2 155 162 -7 -15 225 3 152 145 7 -1 1 4 190 183 7 -1 1 5 134 123 11 3 9 6 175 167 8 0 0 7 99 76 23 15 225 8 100 104 -4 -12 144 64 726 d= X-Y D = SumDifference/n 8 t= D-MD/root(s^2D/n)= 19.0021022 S^2D=SS/df 11.34375 alpha= n-2