The control group receives either no treatment, a standard treatment whose effect is already known, or a placebo (a fake treatment). The treatment is any independent variable manipulated by the experimenters, and its exact form depends on the type of research being performed. In a medical trial, it might be a new drug or therapy.
What is the control group in psychology?
The control group is composed of participants who do not receive the experimental treatment. When conducting an experiment, these people are randomly selected to be in this group.
What is the difference between a control group and treatment?
The control group receives either no treatment, a standard treatment whose effect is already known, or a placebo (a fake treatment). The treatment is any independent variable manipulated by the experimenters, and its exact form depends on the type of research being performed. In a medical trial, it might be a new drug or therapy.
What are the two types of control groups in research?
There are two main types of control groups: positive control groups and negative control groups. In a positive control group, the control group is designed to produce the effect you are trying to reproduce in the experimental group. This type of control group allows you to show that the desired result is possible in the experiment.
What is the purpose of a control group in an experiment?
A single experiment may include multiple experimental groups, which may all be compared against the control group. The purpose of having a control is to rule out other factors which may influence the results of an experiment. Not all experiments include a control group, but those that do are called "controlled experiments."
What is a control treatment examples?
The experimental group is given the experimental treatment and the control group is given either a standard treatment or nothing. For example, let's say you wanted to know if Gatorade increased athletic performance. Your experimental group would be given the Gatorade and your control group would be given regular water.
Which research method typically has treatment and control groups?
Two-Group Experimental Designs The simplest true experimental designs are two group designs involving one treatment group and one control group, and are ideally suited for testing the effects of a single independent variable that can be manipulated as a treatment.
What is a controlled group used for?
A control group in a scientific experiment is a group separated from the rest of the experiment, where 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.
What is a controlled treatment study?
A clinical study that includes a comparison (control) group. The comparison group receives a placebo, another treatment, or no treatment at all.
How is the control group treated?
Control groups in experiments The treatment group (also called the experimental group) receives the treatment whose effect the researcher is interested in. The control group receives either no treatment, a standard treatment whose effect is already known, or a placebo (a fake treatment).
Is control group a treatment group?
A control group consists of participants who do not receive any experimental treatment. The control participants serve as a comparison group.
What is a control group psychology?
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.
What is the main purpose of a control?
Controls allow the experimenter to minimize the effects of factors other than the one being tested. It's how we know an experiment is testing the thing it claims to be testing. This goes beyond science — controls are necessary for any sort of experimental testing, no matter the subject area.
What is the purpose of a control group quizlet?
A control group in a scientific experiment is a group separated from the rest of the experiment, where 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.
Does control group receive placebo?
A control group refers to a group of clinical trial participants who do not receive the drug or treatment being studied in the trial but instead receive standard of care or a placebo.
What is a treatment control design?
Basic Design The basic design, also referred to as a treatment–control posttest design, consists of two groups, a treatment group and a control group. Only participants in the treatment group receive a manipulation.
What is controlled group in clinical trial?
In a clinical trial, the group that does not receive the new treatment being studied. This group is compared to the group that receives the new treatment, to see if the new treatment works.
Control Groups in Experiments
- Control groups are essential to experimental design. When researchers are interested in the impact of a new treatment, they randomly divide their study participants into at least two groups: 1. The treatment group (also called the experimental group) receives the treatment whose effect the researcher is interested in. 2. The control groupreceives e...
Control Groups in Non-Experimental Research
- Although control groups are more common in experimental research, they can be used in other types of research too. Researchers generally rely on non-experimental control groups in two cases: quasi-experimental or matching design.
Importance of Control Groups
- Control groups help ensure the internal validityof your research. You might see a difference over time in your dependent variable in your treatment group. However, without a control group, it is difficult to know whether the change has arisen from the treatment. It is possible that the change is due to some other variables. If you use a control group that is identical in every other way to t…