Chapter Six Flashcards
Internal Validity
Extent to which a study provides evidence of a cause effect relationship between the independent and dependent variables.
Confounding
Error that occurs when the effects of two variables in an experiment cannot be separated resulting in a confused interpretation of the results.
Subjective variables
A difference between subjects that cannot be controlled, only selected.
Construct Validity
Extent to which the results support the theory behind research.
Manipulation check
Aspect of an experiment designed to make certain that variables have changed in the way that was intended.
External Validity
How well the findings of an experiment generalize to other situations or populations.
Ecological Validity
Extent to which an experiment mimics a real world situations.
Statistical Conclusion Validity
Extent to which data are shown to be the result of cause -effect relationships rather than accidents.
Power
The probability of rejecting a null hypothesis when it is in fact, false.
Effect Size
Strength of the relationship between the independent and dependent variables.
Ambiguous temporal procedure
Although the two variables are related, it is not clear which one is the cause, and which is the effect.
History
Events that occur outside the laboratory and could effect the results of the study.
Maturation
Source of error in an experiment related to the amount of time between experiments.
Effect of repeat testing
Performance on a second test is influenced by simply having taken the first test.
Regression Effect
Tendency of subjects with extreme scores on a first test to score closer to the mean on second testing.
