A psychologist wishes to establish the reliability of a new IQ test that is
based on a variety of brain measures (including neural conduction speed and the
rate at which glucose in the brain is metabolized).
These brain measures are
factored together to provide a single scaled score for each subject. The
subjects were randomly selected from a population of young adults and given the
same brain test twice. The data are as follows:
TEST RETEST
Subject # Brain Scaled Score Brain Scaled Score
1. 50 55
2. 60 57
3. 65 64
4. 40 45
5. 35 40
6. 40 38
7. 60 57
8. 55 54
9. 50 48
10. 45 45
11. 52 50
12. 48 50
13. 51 52
14. 49 50
15. 50 50
16. 50 49
17. 37 40
18. 63 60
19. 50 50
20. 50 50
What is the reliability of this new test.
What will be an ideal response?
rtt =.956 Sig p<.01
You might also like to view...
Infants store memories easily in the first year of life
Indicate whether this statement is true or false.
Which technique removes a reinforcer to reduce the frequency of a behavior?
a) extinction b) punishment c) negative reinforcement d) systematic desensitization
Ted has been diagnosed as exhibiting acute stress disorder; Will has a diagnosis of posttraumatic stress disorder. Based on this description alone,
what would you conclude about the two individuals? a) Ted is more vulnerable than is Will. b) Will has had symptoms that lasted longer than Ted's symptoms. c) Compared to Will, Ted was exposed to a more serious type of stressor. d) Compared to Will, Ted is experiencing more symptoms related to the fight or flight response.
The major contributor to self-esteem is
A. coordination of personal and social demands. B. physical appearance. C. self-denial. D. social support from parents, peers, and teachers.