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GRE Psychology: Measurement And Methodology
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GRE Psychology: Measurement And Methodology
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25 Questions

1. How well a test measures a construct; multitrait-multimethod technique determines validity; internal - external: concurrent - construct - content - face

2. Might show how often different variables appear; nominal - ordinal - interval - ratio (real zero)

3. For even number of values in the set - take the average of the two middle value

4. Measure arousal of sympathetic nervous system - stimulated by lying and anxiety

5. Empirical-keying or criterion-keying approach; to determine of subject is like a particular group or not

6. compares means of 2 different groups to see if the two groups are truly different - analyze differences between means on continuous data - particularly useful with small n - cannot test for difference between more than 2 groups

7. Mathematically combines and summarizes overall effects or findings for a topic; best known for consolidating effectiveness of psychotherapy - can calculate overall effect size or conclusion drawn from a collection of studies; needed when conflicting

8. Process in testing concurrent validity

9. Not simple and linear - looks like a curved line - ex: arousal and perfomance - high A --> low P - Low A --> low P - medium A --> high P

10. Does not control - but examines how independent variable affects it

11. Numerically calculating and expressing correlation - r range -1 to +1 - 0 = no relationship

12. Every member of the population has an equal chance of being chosen for the sample

13. Order - variables need to be arranged by order (not necessarily equally spaced) - ex: maranthon finishers

14. Used when equivalent one cannot be isolated

15. The degree to which an independent variable can predict a dependent variable

16. Has plotted points connected by lines - used to plot variables that are continuous (categories without clear boundaries)

17. Used when an experiment involves more than one independent variable - can separate the effects of different levels of different variables - can isolate main effects - can identify interaction effects - ex: studying effect of brain lesion on problem s

18. Rosenthal effect; researchers see what they want to see; minimized in double-blind

19. Whether scores on a new measure correlate with other measures known to test the same construct; cross validation process

20. Capable of showing order and pacing because equal spaces lie between the values - do not include real zero - ex: temperature

21. When subjects act in ways they think experimenter wants or expects

22. I when incorrectly reject null - thought significant but chance; II when incorrectly accept null - thought chance but significant

23. Used most commonly on standardized test

24. Allows own answer: expression of conflicts - needs - impulses; content interpreted by administrator - some more objective than others; Rorschach Inkblot Test - Thematic Apperception Test - Rosenzweig Picture-Frustration (P-F) Study - Word Association

25. When subject behave differently just because they thing that they have received the treatment substance or condition

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