Title | Psych 311 Final Exam Flashcards Quizlet |
---|---|
Course | Introduction to Experimental Psychology |
Institution | California State University San Bernardino |
Pages | 4 |
File Size | 259.6 KB |
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Psych 311 Final Exam Terms in this set (37) 2 types of External Validity:
Advantages of matching subjects design?
Advantages of parametric tests over
Population and Ecological validity
Control group and experimental group.
Robustness: T-test and ANOVA. Flexible and Power
nonparametric tests?
By lower the significance level and run
Reduce Type One (I) Error
conservative test you can ___________________.
Conduct a normal curve test, Conduct a one-
Bad ways of Gaining Power
tailed test, and Raise your significance level are ___________________________?
Ecological Validity
An experimental design in which the subjects
Generalization from the Lab to the real world.
Matched-Group Design.
are paired (or matched) on some characteristics is a _____________________.
External validity
Factorial design?
Failing to reject the null hypothesis when it is
The results of the experiment generalize beyond the Lab. to the real world.
Is every combination of the levels of IV-Independent variables that are use in the experiment.
Type Two (II) Error
actually false is a ______________
How can we reduce type one (I) error and
Psych 311 Final Exam
By lower the significance level from .05 to .01 and run conservative test.
No Interaction: parallel lines. Interaction: unequal distances between the lines. How can we understand interactions graphically?
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How to control subject and experimenter
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Use a double-blind technique.
biases? How they influence an experiment?
How type I error and type II error relate?
If the data does not justifies a parametric test
If Type II error is lowered, than type I error would increase.
Nonparametric Test
and/or If there are assumptions behind parametric tests are strongly violated a researcher might use a ___________________.
Increase Sample size, control extraneous
Good ways of Gaining Power
variables, use a within-subjects, and a wide range of levels for your Independent Variable is known as ___________________.
Increase sample size, Within subject design,
A good ways of increasing the power of an experiment without increasing
Control for extraneous variables, Wide range
Type One (I) Error.
of levels for the IV, Rising it from .01 to .05 would be okay is ____________________________.
Internal validity
The results of the experiment are really to due the Independent Variable and not to any confounds.
1) Constant treatment of subjects. 2) Reduce extreme scores. Methods to reduce variable errors?
3) Increase sample size 4) Within-group variable 5) Within subject desing
Psych 311 Final Exam
A Normal curve test, A one-tailed test, and
Bad ways of Increasing Power.
Raising significance level are __________________________.
Parametric and Nonparametric test?
Population Validity
Parametric test: t-test and ANOVA test Nonparametric test: X 2 Chi-square
Generalization from the sample to the population.
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Quasi-experimental design:
Rejecting the null hypothesis when it is
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Is use out of lab settings.
Type One (I) Error
actually true is known as a _________________.
Significant interaction between 2 independent
One independent variable IV -(levels) influence the dependent variable
variables?
DV.
Systematic Error or confound variable?
Variable Error?
The results are not from the IV. Could lead to Type I error.
Not significant results, could lead to Type II error.
1) Increase your sample size What are 4 ways to Gain Power?
2) Control extraneous Variables 3) Use a Within-Subjects 4) Use a wide range of levels for you Independent Variable
1) Conduct a normal curve test instead of a t-test What are Bad Ways of Gaining Power?
2) Conduct a one-tailed test 3) Raise your significance level
What are some of the common confounds when you don't control the order?
• Carry over effects • Maturation: get better across the practice • Mortality effects: when people drop on experiment.
• Increase sample size What are the good ways of increasing the
• Use a within subject design
power of an experiment without increasing
• Control extraneous variables
Type One (I) Error?
• Wide range of levels for the IV • Rising it from .01 to .05.
Psych 311 Final Exam
An experimental design in which the subjects are paired (or matched) on What is a matched-group design?
some degree of similarity.
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What is the relation between significance level
The higher the significance level, the more powerful the experiment and
and power?
Vice Versa.
What is Type One (Type I) Error? Alpha level
Is rejecting the null hypothesis when it is actually true.
What is Type Two (Type II) Error? Beta Level
Is failing to reject the null hypothesis when it is actually false. (not
(1-B)
significant results)
When to use nonparametric test to analyze data instead of a parametric test?
If they don't think that their data justifies a parametric test. and/or If the assumptions of parametric tests violations.
Depends on levels of measurement. Which statistical test to use for ratio data?
Design of the experiment: # of IV's, DV, and levels of each. 1 IV and 2 levels: t-test (compare 2 groups) 3 IV and 3 or more levels: Analysis of Variance- ANOVA...