Basics of Research Process

Experimental Group: Full Guideline & Examples

Experimental group
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An experimental group, in the context of scientific research, is the group that receives the treatment or intervention under investigation. This group is exposed to the variable or condition that the researcher assumes to have an effect. The results from this group are compared to a control group, which does not receive a treatment, to evaluate the effect of the variable being studied.

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What Is an Experimental Group: Definition

The experimental group definition is our first lesson to learn. Here are several things you need to know before we carry on. Empirical participants' team:

  • Is the one that receives your treatment or perceives changes due to independent variable in research.
  • Is an opposite of a control participants' team that remains constant and unchanged.
  • Shows the results of your tested changes and treatments.
  • Can show different results over specific periods of time.

As you can see, it’s pretty simple. When you have something you want to test or track, you go straight to your empirical participants' team. They’ll be the ones to prove the effectiveness of your hypothesis. 

Control Group vs Experimental Group

There are several differences when it comes to experimental group vs. control group. To ease your understanding, make sure you know these aspects:

  1. Every experiment typically has one control and one empirical participants' team.
  2. Control participants are identical to your second team. However, they do not receive treatments.
  3. You’ll witness and track changes using minutes, hours, or days in both participants' teams. But your practical one is likely to have more differences from the start of your research.
  4. You will also need to track all possible variations and ensure that your results were genuinely caused by your treatments. That is why we need two types of participants.

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Experimental Group Example

Let us focus on examples of experimental groups. It is one thing to know the theory and completely another to have a proper example of what you are looking for.

So here we include an example of an experimental group:

Let’s imagine that you want to study the effects of extended lunches on the productivity of your chosen workers. In order to do that, you find your selected population sample and divide it into separate teams. One team will be a constant. In contrast, your second one will witness the effects of the independent variable. This variable is your central component. After certain periods of time, we will compare the results of both teams and draw conclusions.

Experimental Group: Final Thoughts

Now we’re more than ready to create our very own experimental group. But let’s run through some major points once more, shall we? Your selected population is always placed into control and empirical participants' teams. This way, we are also increasing the validity of our research. We also ensure that your tested variable is truly the one influencing your participants. 

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Frequently Asked Questions About Experimental Group

1. How do you identify an experimental group?

An experimental group is the one that receives treatments. You usually have two such teams: control and empirical ones. Their main difference is independent variables. Where our main participants' team will try your treatment and changes, the control one will remain just as it was before. We still need both types of participants to prove that our experiment is actually valid.

2. What is an experimental group variable?

Experimental group variables can also be called independent. In other words, it is the one that researchers implement and change over time. Participants will feel the effects of the said variable. Precisely those changes will be tracked during your overall study. In contrast, control participants have no independent variable.

3. Why is an experimental group important in an experiment?

An experimental group is key as it proves that your new treatment or implementation can actually work. Sadly, some things cannot be proven fully without tests and experiments. So before presenting your conclusion for implementing a new methodology, it needs proper proof. Therefore, we test our performed procedure on our participants.

4. Do experiments always need an experimental group?

Your simple answer is yes; all experiments need an experimental group. Indeed, some of the research and studies have more than one such team. Therefore, the question is how many teams and participants you actually include. It's not that important whether you need them at all. So, definitely, it must contain one such participants' team.

Article posted on:Nov 18, 2022
Article updated on:May 12, 2023


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