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PSY 2317 UH Observational Unit and The Explanatory Variable Questions

PSY 2317 UH Observational Unit and The Explanatory Variable Questions

Question Description

I’m working on a psychology multi-part question and need guidance to help me study.

(1) Download Ch04 Homework.docx which is attached to this assignment. You’ll answer the questions there and upload it when you submit this assignment.

(2) It’s been said that we can judge another person’s physical attractiveness within seconds. The truth may be a little more complicated. Photographs of faces were rated on a 10-point attractiveness scale (1 = extremely unattractive, 10 = extremely attractive). Based on these ratings researchers selected a group of 40 attractive faces (M = 7.45) and a group of 40 unattractive faces (M = 2.45).

Then they presented the 80 photographs to 10 new participants to be rated on the same 10-point scale. However, for these new participants, the images of the faces were presented for only 13 milliseconds. Such a small amount of time is not even enough to form a conscious impression. If a participant was not sure about what they had seen, they were instructed to simply guess. The research question was whether judgments of attractiveness would be the same or different for the attractive vs. unattractive faces.

The data file, faces_judged.csv, simulates the data so that the results are very similar to the original study. Each row represents one of the 10 participants. The scores are the participants’ mean ratings of the 40 attractive and 40 unattractive faces. Download faces_judged.csv and open it in Jamovi.

(3) Using the same procedures from the Ch03 homework, create two new variables by (a) adding a constant of 2 to each of the attractive scores and by (b) multiplying each of the unattractive scores by a constant of 2. Name the new variables attractive+2 and unattractive*2.

(4) Make sure the Measure type and Data type are correct for each variable.

(5) From the Exploration menu select Descriptives and move the two original and two new variables to the Variables box.

(6) In the Variables box, rearrange the variables so that the attractive variables are together and the unattractive variables are together.

(7) From the Statistics menu unselect N and Missing to slightly unclutter the results table. Then add Variance, Range, and IQR to the default statistics that are already selected.

(8) From the Plots menu, select Density and Box plot.

(9) Save this analysis as an .omv file to be uploaded as part of this assignment. The file should be named Ch04_YourLastName.omv (substituting your own last name, of course).

(10) Use the information from Jamovi to answer the questions on the Ch04 Homework.docx worksheet.

Instructions for submitting this assignment.

(1) Click the title of this assignment ( Ch04 Homework) to open the Upload Assignment page.

(2) In the ASSIGNMENT SUBMISSION section, attach the Ch04_YourLastName.omv file and the Ch04 Homework.docx file. Click Submit.

(3) If you submit this assignment early enough, I might have time to provide feedback that you can use to improve it and possibly improve your grade. So soon after you submit it, return to this assignment to see if I’ve given you any feedback. Click the assignment title and on the Review Submission History page you’ll see the details of your prior submissions. To revise a prior submission, click Start New, download and revise, be sure to save it, and upload it as previously.


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