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Previously on
Chapter 5…Correlation and Causation |
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Since Correlation does not mean causation
experimenters need to prevent the problems associated with interpreting correlational research |
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The way to do this is to have experimental control |
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A Review of Chapter
6: |
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Getting Things
Under Control: Experimental Method |
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Experimental method means manipulation and control |
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Correlational studies:
Investigator observes if variables have relationships |
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True Experiments: Investigator manipulates variable hypothesized
to be the cause and looks for
hypothesized effect on another variable it removes the third-variable
problem. |
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For this to happen investigators have to take apart naturally
occurring relationships, and have to create a special environment to do this. |
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Random Assignment: eliminates selection bias because
people are randomly Assigned to experimental groups
by the investigator. |
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Up Next…Chapter
7: Artificiality Criticism
and Psychology |
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See how psychological research is misunderstood |
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See how research is applied to real life |
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