One of the required tasks for students from all over the globe is to write different types of academic writing. Such tasks show their current level of knowledge and competence. That helps teachers and professors to see the actual results of their students and improve their programs to enhance weak points. Students likewise realize what should be improved. Therefore, they write different researches. Amongst such is an experimental research design.
That is not an assignment, which is assigned too often. Nonetheless, it has its benefits as well. Conventionally, it is obligatory in certain disciplines like medicine, sociology, anthropology, psychology, and similar ones. This assignment type has certain purposes, which allow exploring various issues with a better level of precision.
When we talk about sociology and psychology, experiments are targeted at figuring out various thoughts and opinions of other people. Other disciplines require the in-depth studies to evaluate actual data. The experimental approach allows manipulating with data. Every experiment helps to use independent variables. There are at least two variables in every case. Therefore, a researcher can direct his studies in various ways.
It’s possible to maintain control over the experimental case. One may easily exclude outside factors to control the independent and natural environment. Every variable may be manipulated and controlled.
Many teachers use randomization. Every group may be assigned random assignments with equal chances. Some will receive subjects randomly. The others are randomly selected. It means that not issues, but participants of the test are chosen blindly.
Now, as we have already shed some light on the experimental research design definition, we should clearly answer the main question. That will help you to understand your assignment better and succeed in its preparation. What is an experimental research design? It is a pick of different research designs, which put to use the manipulative and controlling methods of tests to comprehend causal events. A certain number of variables are used to identify their influence on another variable, which depends on them.
Experimental research design meaning is a systematic and scientific approach to a study. There are taken different measures, which use manipulations and control through a randomized selection. They are targeted on the determination of any changes and explanation of their occurrence. That is the main purpose of experimental research.
You should know that there are several types of experimental research design. It’s vital to understand each. Thus, you won’t be messed up and will be able to use the most suitable option. Consider the following design types:
Let’s have a closer look at these experimental research designs. The first type consists of two teams: the first is controlled and the second is not. It is aimed at pretesting some subjects. The outcomes of the controlled and non-controlled environments offer interesting outcomes. The second kind likewise includes both groups. In this case, both groups are already pretested. It aims to show the outcomes of the effects that occur after the study.
Let’s consider the next variation. The participants are assigned to one of four groups. Two of these groups are controlled. Two are experimental. Every kind of groups is pretested, another one isn’t. Each group will be assigned a post-test. There are dependent and independent variables. They are naturally compared during the process. This kind is used to eliminate possible mistakes of other tests.
During the fourth method, the scholars use from two and more independent variables, which should show their relation and influence on the dependent one. Thanks to this method, the scholars can test multiple hypotheses at once.
The fifth model is implemented to reveal differences amongst subjects and probable differences in conditions of an experiment. It is conventionally used on the occasion when there are tested many groups. It’s difficult to see some similarities amongst too many groups. It shows the homogeneity amongst some of them. Specifically, a researcher may wish to identify the influence of a specific psychological test on children aged 6-15 years. Therefore, these children are divided into several age groups to determine the precise effects of every division.
The final type includes different groups with equal opportunities. They are assigned random tests and undergo several treatments. All groups are pretty similar to one another. All participants are exposed to various conditions. There is one peculiarity about this approach. The control of the experiment is carried out by the participants. Therefore, the outcomes of the second, third, etc. treatments are heavily dependent on the reaction to the first treatment. At times, the outcomes cannot be precise.
There is also one more kind, which is known as a quasi-experimental design. This method involves different groups, and there are no pre-selection processes. Specifically, a class may be divided into several variants. A teacher/professor may use the alphabetical order or just how the students are seated. That is very comfortable.
The experiment is used for all groups equally. Afterward, it is compared among the various groups. It’s worth mentioning that many educators argue this method. The method isn’t suitable for scientific disciplines, such as chemistry or biology. There is no strict control and selection is always random. However, it fits in sociology. Therefore, educators commonly implement it.
As you can see, an experimental research design in education is a pretty tricky and complicated thing. When a teacher/professor uses one of the designs, he or she should be aware of all necessities. That is a scientific way to identify how some variables affect the other ones. This matter must be taken seriously and studied from different angles.