Experimental Versus Non experimental Research

Experimental Versus Nonexperimental Research

When conducting  experimental research , the researcher sets up the study to evaluate an experimental drug, treatment, or intervention. This type of research is a  randomized control trial (RCT) . Some patients receive the experimental drug, treatment, or procedure, and the other group does not.  Randomization  involves something similar to a coin toss (see Figure 4.3).

Figure 4.3

Example: Randomization Control Study

igure demonstrating the two groups of a randomized controlled study, c

In randomized control trials, the control group is the group in which no experimentation occurs. The control group receives customary and routine treatment. The experimental group is where the  independent variable  is manipulated. In randomized control research designs, one group of patients will receive the experimental drug, treatment, or procedure, and the other group of patients will receive customary treatment. Randomization is like flipping a coin (see Figure 4.3). Heads the patient is in the group that receives the experimental intervention, tails the patient receives the customary treatment. Another research scenario could be the study of a new medication. In this case, it could be the dose of the medication that is different among the groups. This allows the researchers to evaluate the effects of dosage on the patients in different groups. Table 4.1 provides a visual example of manipulation, control, and randomization for experimental research.

Table 4.1

Manipulation, Control, and Experimentation

PatientDrugDoseIntervention
Patient A(Manipulation)Lisinopril20 mgManipulationManipulation of dosage. ↑40 mg—independent variable
Patient B(Tails: Control Group)Lisinopril20 mgControlControl Group: Randomization. Coin toss. Patient is randomly placed in the control group of the study, receiving customary treatment.. Nothing is changed.
Patient C(Heads: Experimental Group)Lisinopril20 mgExperimentationExperimental Group: Randomization. Coin toss. Heads: New medication; patient started on propranolol 10 mg daily.

All RCTs are experimental. The research design specifies the study sample that will be selected to participate in the trial or study. Once the population is defined, the participant is randomized into either the control group or the experimental group. Different methods are used to randomize the participants. Experimental designs can establish causation. A high degree of internal validity can be obtained through similar control and experimental groups. In research, one cannot receive less than the usual customary treatment. The participant in the experimental arm can be subjected to risk by not receiving the usual and customary treatment.

A good experiment minimizes the variability of the evaluation and provides unbiased evaluation of the intervention by avoiding confounding from other factors, which are known and unknown. Randomization ensures that each patient has an equal chance of receiving any of the treatments under study. (Suresh, 2011, para. 2)

There are several different methods the research investigator can use for randomization. Methods of randomization include basic randomization, which is based off of a single event, such as flipping a coin or rolling dice. Some methods are more complicated, such as opening an envelope or placing a phone call to receive a control or experimental group assignment for the patient. These different types of randomization may not always work because there may be too many independent variables. The study must conform to the rules and regulations set by the Code of Federal Regulations to remain ethical.

 quasi-experimental study  is able to identify why certain things happen. A quasi-experimental study does not use any form of randomization but looks for a causal relationship between receiving a treatment and not receiving a treatment. With the absence of randomization, the study can no longer be considered experimental. Quasi-experimental research designs identify treatment groups and comparison groups (see Figure 4.4). Because there is no randomization, selection may be based on similar characteristics or similar comorbidities.  Extraneous variables  may be responsible for jeopardizing  internal validity . Extraneous variables are variables that are not foreseen. The researcher is not aware of extraneous variables when designing a research study.


Get Professional Assignment Help Cheaply

fast coursework help

Are you busy and do not have time to handle your assignment? Are you scared that your paper will not make the grade? Do you have responsibilities that may hinder you from turning in your assignment on time? Are you tired and can barely handle your assignment? Are your grades inconsistent?

Whichever your reason may is, it is valid! You can get professional academic help from our service at affordable rates. We have a team of professional academic writers who can handle all your assignments.

Our essay writers are graduates with diplomas, bachelor's, masters, Ph.D., and doctorate degrees in various subjects. The minimum requirement to be an essay writer with our essay writing service is to have a college diploma. When assigning your order, we match the paper subject with the area of specialization of the writer.

Why Choose Our Academic Writing Service?

  • Plagiarism free papers
  • Timely delivery
  • Any deadline
  • Skilled, Experienced Native English Writers
  • Subject-relevant academic writer
  • Adherence to paper instructions
  • Ability to tackle bulk assignments
  • Reasonable prices
  • 24/7 Customer Support
  • Get superb grades consistently

How It Works

1.      Place an order

You fill all the paper instructions in the order form. Make sure you include all the helpful materials so that our academic writers can deliver the perfect paper. It will also help to eliminate unnecessary revisions.

2.      Pay for the order

Proceed to pay for the paper so that it can be assigned to one of our expert academic writers. The paper subject is matched with the writer’s area of specialization.

3.      Track the progress

You communicate with the writer and know about the progress of the paper. The client can ask the writer for drafts of the paper. The client can upload extra material and include additional instructions from the lecturer. Receive a paper.

4.      Download the paper

The paper is sent to your email and uploaded to your personal account. You also get a plagiarism report attached to your paper.

smile and order essaysmile and order essayPLACE THIS ORDER OR A SIMILAR ORDER WITH ASSIGNMENT DEN TODAY AND GET AN AMAZING DISCOUNT

order custom essay paper
Order a unique copy of this paper
(550 words)

Approximate price: $22

Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

We value our customers and so we ensure that what we do is 100% original..
With us you are guaranteed of quality work done by our qualified experts.Your information and everything that you do with us is kept completely confidential.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

The Product ordered is guaranteed to be original. Orders are checked by the most advanced anti-plagiarism software in the market to assure that the Product is 100% original. The Company has a zero tolerance policy for plagiarism.

Read more

Free-revision policy

The Free Revision policy is a courtesy service that the Company provides to help ensure Customer’s total satisfaction with the completed Order. To receive free revision the Company requires that the Customer provide the request within fourteen (14) days from the first completion date and within a period of thirty (30) days for dissertations.

Read more

Privacy policy

The Company is committed to protect the privacy of the Customer and it will never resell or share any of Customer’s personal information, including credit card data, with any third party. All the online transactions are processed through the secure and reliable online payment systems.

Read more

Fair-cooperation guarantee

By placing an order with us, you agree to the service we provide. We will endear to do all that it takes to deliver a comprehensive paper as per your requirements. We also count on your cooperation to ensure that we deliver on this mandate.

Read more

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Open chat
1
You can contact our live agent via WhatsApp! Via +1 817 953 0426

Feel free to ask questions, clarifications, or discounts available when placing an order.

Order your essay today and save 20% with the discount code VICTORY