Differential Influence – When the influence of an extraneous variable is different for the various groups.

-Teacher’s Instructions: Pick 5 key terms that are noted at the end of each chapter and redefine them. Do not copy the definition hence why you must redefine.
-My Notes for you: This chapter is about “Control Techniques in Experimental Research” below are the key terms/concepts. I added the meanings from book but as mentioned on top please redefine them.
1. Differential Influence – When the influence of an extraneous variable is different for the various groups.
2. Randomization – Control technique that equates groups of participants by ensuring every member an equal chance of being assigned to any group.
3. Random Assignment – Randomly assigning a sample of individuals to a specific number of comparison groups.
4. Yoked Control – A matching technique that matches participants on the basis of the temporal sequence of administering an event.
5. Blind Technique- A method whereby knowledge of each research participant’s treatment condition is kept from the experimenter.

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