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Please respond to the following questions either by writing

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Please respond to the following questions either by writing the design name or by describing the design using standard notation (X = program, O=observation, R= random assignment). For each design, please discuss all threats to internal validity.


1. a. Design: Single group post-test only


b. Internal validity threats:


2. a. Design: (R) O1 X O2
(R) O1 O2


b. Internal validity threats:


3. a. Design: Pretest-posttest design with experimental and comparison group


b. Internal validity threats:



4. a. Design: O X O


b. Internal validity threats:



5. a. Design: Single group with three pretests and four posttests


b. Internal validity threats:
Submitted: 10 months ago.
Category: Writing Homework
Expert:  DXJ Writer replied 10 months ago.

DXJ Writer :

Hi!

DXJ Writer :

I appreciate your request. Is there a particular reference requirement for this? DXJ

Customer: I am not sure what you mean by requirement but I know you have done something of the same type of question and course in the past, that is why I sent it to you directly
DXJ Writer :

Hi!

DXJ Writer :

I let me take a look and get these to your shortly. DXJ

Customer: Thanks
DXJ Writer :

You're most welcome! DXJ

DXJ Writer :

Hi!

DXJ Writer :

I reworded the preceding answers. However, you should always use my answers as a guide. This is JustAnswer's policy.
Your answers are here

Customer: Hi
DXJ Writer :

They should open in a new window. Hope they help! DXJ

DXJ Writer :

If you have any questions, please let me know.

DXJ Writer :

All references are internet accessible.

DXJ Writer :

DXJ

DXJ Writer, Master's Degree
Category: Writing Homework
Satisfied Customers: 2044
Experience: Research writer, educator, tutor with 20+ years experience.
DXJ Writer and other Writing Homework Specialists are ready to help you
Expert:  DXJ Writer replied 10 months ago.
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Expert:  DXJ Writer replied 10 months ago.
Hi!

Please let me know if you have questions or need further assistance. I'd be glad to help!Smile DXJ
Customer: replied 10 months ago.
Hi thank you very much, I don't have my grades yet, but it looks great to me. I also rated you a 10 all through
Expert:  DXJ Writer replied 10 months ago.
Hi!

Thanks so much for your response! Glad I could help! However, your rating does not show. Could you please check it? I'd really appreciate it! Smile DXJ

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