The Importance of Random Assignment

The paper that I have attached needs to be rewritten. It was not written in my own words. It should be a rewrite and should include all of the information in this paper that I have attached.
Graded Rubric:

1. Explains why randomization is important to psychological experiments and why results are not necessary valid with a large sample size.
2. Describes the methods researchers can use to randomly assign participants using detailed examples.
3. Explains how a researcher can draw a valid conclusion without randomization and addresses how researchers can assess causality without randomization.
4. Submission is free of errors related to citations, grammar, spelling, syntax, and organization and is presented in a professional and easy-to-read format.

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Information for this paper should come from my textbook Begining Behavioral Research: A Conceptual Primer 7th ed. (2013) Authors are Ralph L. Rosnow and Robert Rosenthal. Chapters 7 & 8. Pages 128-163. You can however add another source if you need to but, please cite and add to the reference page but, it is not necessary. Thank you!

Imagine that you are an online tutor for an undergraduate Research Methods course. One day, you get this email:

Dear Tutor, I am having some trouble understanding why it is so important to randomly assign participants to experimental conditions. It seems to me that if you have a large enough sample, the results would probably be valid even if you didn’t bother to randomize the participants. Why is it important to go through the trouble of randomizing participants? Also, if you are going to randomly assign participants, how should you do it?

Respond to this student’s email, being sure to explain the concepts at the appropriate level for an undergraduate. In your response, be sure that you explain why it is important to randomize participants. Also, explain some of the ways that a researcher can randomly assign participants. Last, be sure to explain how a researcher can make valid conclusions even in situations where randomization is not possible.

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