Internal validity

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9 Terms

1
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causal relationship

internal validity is the degree to which ________ is possible

2
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changes

internally valid if we can be sure that the ___________ in the behavior observed across the treatment conditions were actually caused by the IV

3
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other explanations

experiment is not internally valid if _____________ are possible

4
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correct generalization

its not possible if the experiment is not INTERNALLY VALID

5
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confounded experiment

when the value of an extraneous variable systematically changes along the independent variable

6
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extraneous variables

factors that are not the focus of the experiment but can influence the findings

7
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systematic change

change due to one whole group experiences something

8
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infrequent & random events

as long as the extraneous variables' influences are ________________, they do not necessarily invalidate an experiment (2&)

9
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systematically changes

always set up an experiment in which the IV is the only variable that _______________ across the conditions