Table of Contents
Introduction of Experiment Design
An experiment is a scientific procedure in which one or more factors (variables) are manipulated in order to determine their effect on a particular outcome. The outcome is usually measured, and the results are then analyzed in order to determine the significance of the factors.
There are a variety of different types of experiments, but all experiments share a common goal: to determine the cause-and-effect relationships between the variables. In order to do this, the experiment must be designed in a way that allows for the accurate determination of the effect of the variables.
One of the most important aspects of designing an experiment is the selection of the experimental variables. The variables must be selected in a way that allows for a clear determination of their effect on the outcome. In addition, the variables must be independent of each other; that is, the effect of one variable must be isolated from the effect of any other variables.
Another important aspect of experiment design is the selection of the experimental subjects. The subjects must be chosen in a way that allows for a fair comparison of the effects of the variables. In addition, the subjects must be randomly assigned to the different groups in order to avoid any bias.
The experimental design must also include a way to measure the outcome of the experiment. The most common way to measure the outcome is through the use of a statistical test. The results of the statistical test can then be used to determine the significance of the factors.
The Examples of Experiment Research Design
1. A researcher wants to test the effects of a new drug on anxiety levels. The researcher creates a randomized control trial in which half of the participants are given the new drug and the other half are given a placebo.
2. A researcher wants to test the effects of a new drug on anxiety levels. The researcher creates a cohort study in which all participants are given the new drug.
3. A researcher wants to test the effects of a new drug on anxiety levels. The researcher creates a case-control study in which participants with high anxiety levels are given the new drug and participants with low anxiety levels are given a placebo.
The Various Types of the Experiment Research Design
There are many different types of research design, but they can generally be divided into two categories: experimental and non-experimental.
Experimental research design is when the researcher intervenes in some way to manipulate the independent variable and then observes the effect on the dependent variable. This type of research is considered to be the most reliable because it allows the researcher to control for all other variables that could be affecting the outcome.
Non-experimental research design is when the researcher observes what happens naturally without intervening in any way. This type of research is less reliable because it is not possible to control for other variables that could be affecting the outcome.
