What are Control Variables in research?

What are Control Variables in research www.homeworkstand.com

Anything that is considered to be constant or limited in an experiment or research study is termed Control Variable. The variable contributes nothing to the study’s outcome; however, it must be controlled so as not to have any influence on the results.

Don't use plagiarized sources. Get Your Custom Essay on
What are Control Variables in research?
Just from $13/Page
Order Essay

Variables can be controlled if they are held constant throughout the study. One example of this is controlling the room temperature during the experiment. Variables can also be controlled indirectly with the use of several methods like statistical control or randomization.

What is the importance of control variables?

Control variables help limit the influence of external or confounding variables, which helps to enhance the study’s internal validity. In addition, such variables help to establish the relationship between your variables of interest.

The variables that can impact the results should be controlled apart from the independent and dependent variables. If relevant variables are left unchecked, you might not prove their influence on the results. Uncontrolled variables leave room for alternate explanations to your findings.

  1. Control variables in experiments: When conducting research, the researcher is more likely to be interested in the effects the independent variable has on the dependent one. By controlling the other variables, they can ascertain that their experimental manipulation solely causes the results.
  2. Control variables in non-experimental research: In non-experimental research, researchers are not able to manipulate independent variables. In such a case, control variables play a vital role which helps to infer the relation between the main variables of interest.

How do you control a variable?

Several methods help to control extraneous variables during experiments. Some of them can also be employed during observational or quasi-experimental designs.

  1. Random assessment: When conducting experiments involving several subjects, participants should be randomly chosen and assigned to different conditions. Random assessment helps to ensure that there are no systematic differences by balancing the characteristics of the groups.
  2. The assignment method helps to control subject variables, which might otherwise vary among groups causing the results to skew.
  3. Standardized procedures: Researchers must apply the same rules of control across all groups when conducting a study. In ideal cases, the groups should only differ in manipulating the independent variable, which will help researchers isolate its effects on the dependent variable.
  4. A good way of controlling variables is by holding them constant to a certain level using the experiment’s design protocol and using the same for all participant sessions. For example, the time spent. The instructions should be the same for all the participants in a laboratory setting for conducting experimental tasks.
  5. Statistical controls: Extraneous variables can be measured and controlled statistically to negate their effects on other variables.
  6. Modeling control variable data by considering the independent and dependent variable in ANCOVAs and regression analysis is known as “Controlling for a variable”. This is because it helps to isolate the effects of the control variable from the relation between the independent and dependent variables that we are interested in.

Control variable vs control group

control variable is quite different from a control group. Control variables are the extraneous variables that are held constant or measured during an experiment for both experimental and control groups, with an independent variable varying between control and experimental groups.

On the other hand, a control group does not go through experiments as they are used as the benchmark to compare results with the experimental group. A control group undergoes no treatment or sometimes is placed under a placebo.

Everything else apart from the experimental treatment should be the same between the control and experimental group during the procedure.

Frequently Asked Questions

Why is it important to have control variables during experiments?

Controlling a variable helps us limit its effect on the relationship between the independent and dependent variables to ensure the results are not skewed.

Why are control groups necessary?

Control groups help to set the benchmark for the experiment as the results from the experimental group are compared with that of the control group to understand and interpret the results of the experiment.

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Home Work Stand
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Nursing
Very professional and easy to work with. I highly recommend!
Customer 452445, December 12th, 2021
Classic English Literature
Wonderful writer. Pay attention to detail. Does not plagiarize. Always completes work on time!
Customer 452445, March 3rd, 2022
Philosophy
The writer provided the highest quality paper before the deadline. Followed all the directions provided and never had to contact me regarding the assignment. Great essay writing service!
Customer 452445, December 9th, 2021
Business Studies
Paper is great. Just only needed the one reference. Thank you
Customer 452445, June 14th, 2022
Communications
Perfectly done. I would love to continue working with this writer thought out the 11-week course. Thank you.
Customer 452445, October 24th, 2021
Business Studies
Remarkable work!! Always helpful and amazing communication!!
Customer 452445, January 4th, 2022
Chemistry
It was very helpful and well thought out.
Customer 452445, January 26th, 2022
Computer science
Great individual to work with. Always come through to provide the best services. Thank you.
Customer 452445, June 10th, 2022
Human Resources Management (HRM)
The best writer in his subject of expertise. It is reflected in the quality of the work.
Customer 452445, December 29th, 2021
Economics
Helped me beat the deadline. Am grateful.
Customer 452445, November 6th, 2021
Nursing
Writer was cooperative and got me an A on my paper.
Customer 452445, December 23rd, 2021
Social Sciences
The formatting was not okay but the paper was great.
Customer 452445, November 2nd, 2021
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend
OUR GIFT TO YOU
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat

Order your essay today and save 15% with the discount code ESSAYHELP