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Experimental_Research_Design - Important Terms for...

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Important Terms for Experiment Design Remember… There are several different way to manipulate the IV Experimental Manipulation o by presence or absence of the IV o by changing the amount of the IV given o by introducing different types of events o Instructional Manipulation How do you compare performance? Between-participants vs Within-participants If each participant only experiences 1 of the conditions for an IV, then it is a Between- Participants IV If each participant experiences all of the conditions for an IV, then it is a Within- Participants IV Comparing Performance In a between -participants design, you compare 1 group’s performance to the other groups performance In a within -participants design, you compare the individual’s performance on one task to the same individual’s performance on a different task How are they different? Between -participants designs are good when you can’t “undo” the experimental manipulation o
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