The researchers then wanted to assess the test for validity, and so each
subject was given the WAIS-R IQ test and their Test (not the retest) scores
were compared with their WAIS-R IQ scores.
Subject # Brain Scaled Score WAIS-R IQ
1. 50 100
2. 60 115
3. 65 120
4. 40 96
5. 35 100
6. 40 85
7. 60 115
8. 55 105
9. 50 103
10. 45 90
11. 52 120
12. 48 105
13. 51 110
14. 49 95
15. 50 100
16. 50 100
17. 37 95
18. 63 112
19. 50 100
20. 50 100
What is the Pearson correlation between the two sets of test scores?
What will be an ideal response?
r=.771
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A researcher asks an assistant to conduct a study on her behalf. She specifically tells her assistant only to share the results anonymously and not include the names of the students along with their scores. Such an experiment would be considered a
a. double-blind experiment. b. single-blind experiment. c. correlational study. d. laboratory observation.
Throughout young and middle adulthood, the largest numbers of deaths occur among
a. Caucasian Americans b. Hispanic Americans c. African Americans d. Asian and Pacific Island Americans e. American Indians and Alaska Natives