Browse Over 3 Million Questions

Let Our Professionals Assist You With Research and Writing. 

student_PNG181.png

Discussion: Confounding Variables

Discussion: Confounding Variables

Internal validity in a research study is the extent to which changes in the dependent variable can confidently be attributed to the influence of the independent variable rather than to possible confounding variables. In other words, was it really the independent variable that had an effect on the dependent variable or did something else cause the effect?

For example, presume that an instructor wants to try a new reading efficiency strategy to improve reading comprehension of college students in an online course. The instructor divides the class into two equal groups. One group (the experimental group) reads a passage using the new reading strategy taught by the instructor. The other group (the control group) reads the same passage but is not exposed to the new strategy. Next, both groups of students complete a reading comprehension test. The assumption is that if the group exposed to the new reading strategy scored higher than the other group, the new reading strategy is effective.

Connect with a professional writer in 5 simple steps

Please provide as many details about your writing struggle as possible

Academic level of your paper

Type of Paper

When is it due?

How many pages is this assigment?

What else could explain the difference in scores? Is it possible that the students enrolled in the group that learned the new strategy already had high reading comprehension skills? What if this group already knew more about the information in the reading passage? Could the instructor have inadvertently biased the study because he taught the new reading strategy, and he selected the reading passages that both groups read?

Possible situations, or reasons, that could interfere with obtaining accurate results are called confounds, and could be a threat to the internal validity of a study. It is important to keep in mind though, that the presence of a possible confounding variable in a study does not necessarily mean it is responsible for obtained results. Rather, the independent variable (e.g., the reading intervention) may have actually had an effect on the dependent variable (the test results).

In this Discussion, you will examine possible confounding variable(s) in research studies from your course textbook and apply methodology for addressing and/or eliminating the possible confound(s).

To prepare:

  • Read Chapter 12 in your course text.
  • Read the “Thinking Critically About Research” scenarios (a—i) in Chapter 12, pages 256–258.
  • Choose the scenario that most interests you. Note: Before selecting a scenario, view the Discussion 4 Forum to see if any colleagues have already posted. If so, select a letter that has not yet been chosen. All nine (a–i) letters should addressed before a student repeats a letter.

For your chosen scenario, determine the possible confounding variable(s) (there may be more than one), and consider how they might be eliminated using research designs presented in the readings (e.g., 2×2 factorial design).

Note: You can assume that random assignment took care of any potential differences in the groups; therefore, group differences are not a potential confound.

With these thoughts in mind:

By Day 3
  1. Indicate the letter of the scenario you selected in the “Subject” field of your post. You should be addressing a scenario different from those posted, unless your colleagues have already addressed all nine scenarios. Identify and explain the possible confounding variable(s) (e.g., demand characteristics, placebo effect) in your chosen scenario.
  2. Drawing from the Learning Resources this week, explain a specific research design (e.g., 2×2 factorial design, repeated measures design) the researcher(s) could use to control for confounding variables.

Note: Be sure to support the responses within your Discussion post, and in your colleague reply, with evidence from the assigned Learning Resources.

The post Discussion: Confounding Variables appeared first on Smart Essays.

Order a similar paper and get 15% discount on your first order with us

Dr. Thea Watson
Dr. Thea Watson
98% Success Rate
Read More
“Hello, I deliver nursing papers on time following instructions from the client. My primary goal is customer satisfaction. Welcome for plagiarism free papers”
Ivan L. Myers
Ivan L. Myers
98% Success Rate
Read More
Hi! I am an English Language and Literature graduate; I have written many academic essays, including argumentative essays, research papers, and literary analysis.
Dr. Evelyn Dougherty
Dr. Evelyn Dougherty
98% Success Rate
Read More
"Hi, count on me to deliver quality papers that meet your expectations. I write well researched papers in the fields of nursing and medicine".
Dr. Paul P. Klug
Dr. Paul P. Klug
99% Success Rate
Read More
"A top writer with proven reliability and experience. I have a 99% success rate, overall rating of 10. Hire me for quality custom written nursing papers. Thank you"

How Our Essay Writing Service Works

Tell Us Your Requirements

Fill out order details and instructions, then upload any files or additional materials if needed. Then, confirm your order by clicking “Place an Order.”

Make your payment

Your payment is processed by a secure system. We accept Mastercard, Visa, Amex, and Discover. We don’t share any informati.on with third parties

The Writing Process

You can communicate with your writer. Clarify or track order with our customer support team. Upload all the necessary files for the writer to use.

Download your paper

Check your paper on your client profile. If it meets your requirements, approve and download. If any changes are needed, request a revision to be done.

Recent Questions

Discussion Question

 Go to this website and take the Race Implicit Association Test. After you have received your results answer the following questions. How do you feel about your

Read More »

Stay In Touch!

Leave your email and get discount promo codes and the best essay samples from our writers!
Chat With Us
Chat With Us