
Full Answer
What is the group that does not receive experimental treatment?
The group which does not receive experimental treatment is the control group, the group which does receive the treatment is the experimental group. What is an investigation in which a group that receives some experimental treatment is compared to a group that does not receive the experimental treatment?
What is an experimental group in psychology?
In a psychology experiment, the experimental group (or experimental condition) refers to the group of participants who are exposed to the independent variable. These participants receive or are exposed to the treatment variable.
Can an experiment include multiple experimental groups at one time?
An experiment may include multiple experimental groups at one time. A control group is a group separated from the rest of the experiment such that the independent variable being tested cannot influence the results.
Do all experiments need a control group?
While all experiments have an experimental group, not all experiments require a control group. Controls are extremely useful where the experimental conditions are complex and difficult to isolate.

Why do experimenters compare the experimental group to the control group?
Experimenters compare the experimental group to the control group to determine if the treatment had an effect. By serving as a comparison group, researchers are able to isolate the independent variable and look at the impact it had.
What is control group in psychology?
Kendra Cherry, MS, is an author, educational consultant, and speaker focused on helping students learn about psychology. Emily is a fact checker, editor, and writer who has expertise in psychology content. The control group is composed of participants who do not receive the experimental treatment.
How does a researcher test his hypothesis?
To test his hypothesis, the researcher selects a pool of participants who are all taking the same college math class. All students have been given the same instruction and resources over the course of the semester. He then randomly assigns participants to either the control group or the experimental group.
What can a researcher do after an experiment is complete?
After the experiment is complete, the researcher can then look at the test results and start making comparisons between the control group and the experimental group. What he discovers is that the test scores on the math exam were significantly lower in the experimental group than they were in the control group.
Why are the two groups comparable?
Because participants have been randomly assigned to either the control group or the experimental group, it can be assumed that the groups are comparable. Any differences between the two groups are therefore the result of the manipulations of the independent variable. The experimenters carry out the exact same procedures with both groups with ...
What is a control group?
The control group is composed of participants who do not receive the experimental treatment. When conducting an experiment, these people are randomly assigned to be in this group. They also closely resemble the participants who are in the experimental group or the individuals who receive the treatment. While they do not receive the treatment, they ...
Why is a control group important?
Why a Control Group Is Important. While the control group does not receive treatment, it does play a critical role in the experimental process. This group serves as a benchmark, allowing researchers to compare the experimental group to the control group to see what sort of impact changes to the independent variable produced. 1 .
What were the ethical issues with the Monster Study?
All of the following were ethical issues with The Monster Study EXCEPT. 1) there was no debriefing. 2) the orphanage didn't protect the children. 3) the study caused children who didn't stutter before the study to start to stutter after the study.
How to explain hypothesis to participants?
2) obtaining the participant's signature or a signature from the parent or guardian if the participant is a minor. 3) explaining the hypothesis to the participants. 4) reviewing that data is confidential.
Is penicillin given for syphilis?
1) penicillin was not administered even after it was determined that it was an effective treatment for syphilis.
Did the wives and children of the men who were infected with syphilis have to be treated?
4) fortunately, since the wives and children of the men who were infected with syphilis weren't part of the study, they were treated if they contracted syphilis.
What is an experimental group?
An experimental group is a test sample or the group that receives an experimental procedure. This group is exposed to changes in the independent variable being tested. The values of the independent variable and the impact on the dependent variable are recorded. An experiment may include multiple experimental groups at one time.
What is the difference between experimental and control?
The only difference between the control and experimental group is the independent variable.
What is a control group?
A control group is a group separated from the rest of the experiment such that the independent variable being tested cannot influence the results. This isolates the independent variable's effects on the experiment and can help rule out alternative explanations of the experimental results. While all experiments have an experimental group, ...
What is a placebo in an experiment?
To prevent skewing the results, a placebo may be used. A placebo is a substance that doesn't contain an active therapeutic agent. If a control group takes a placebo, participants don't know whether they are being treated or not, so they have the same expectations as members of the experimental group.
What is controlled experiment?
A simple example of a controlled experiment may be used to determine whether or not plants need to be watered to live. The control group would be plants that are not watered. The experimental group would consist of plants that receive water. A clever scientist would wonder whether too much watering might kill the plants and would set up several experimental groups, each receiving a different amount of water.
What is a positive and negative control?
Positive and negative controls are two other types of control groups: Positive control groups are control groups in which the conditions guarantee a positive result. Positive control groups are effective to show the experiment is functioning as planned. Negative control groups are control groups in which conditions ...
What is a negative control group?
Negative control groups are control groups in which conditions produce a negative outcome. Negative control groups help identify outside influences which may be present that were not unaccounted for, such as contaminants.
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