help me to do an research design

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Since you question lacks necessary details, perhaps some review of the experimental method might be helpful.

An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.

A dependent variable is the response or measure of results.

Extraneous variables — other than the independent variable — potentially can affect the dependent variable, so they must be controlled. If possible, you try to keep them constant between the experimental and control group.

The experimental group receives the independent variable.

The control group is similar to experimental, except it does not receive the independent variable. Extraneous variables are balanced between experimental and control groups.

Types of experiments

1. Single blind gives the control group a placebo — a substance that is inert, it has no physical effect. Subjects don't know if they are in experimental or control group to reduce placebo effect, a change in behavior solely due to believing that you are getting the independent variable.

2. Double blind keeps both subjects and experimenter ignorant of group setup. Distribution of the independent variable and placebo are controlled by third party. This controls for experimenter bias and self-fulfilling prophecy, which means that experimenters with particular expectations are likely to consciously or unconsciously to bias the experiment and influence it to conform to their expectations.

As an example, suppose you want to find out if fluorides reduce dental cavities. You would find two groups, trying to control the extraneous variables. Extraneous variables are found by surveying previous research in the area. In this case, you would match the groups in terms of previous history of cavities, diet and dental hygiene habits including how and how often they brush their teeth.

The experimental group would get toothpaste with the independent variable, the fluoride, while the control group would not have the fluoride in their toothpaste. The toothpaste without the fluoride would be the placebo.

The dependent variable would be the number of cavities after participating in the experiment for a time. The dependent variable indicates the results, but it is not the results. At the end of the experiment, both groups could have no change in cavities or one of the groups could have a greater reduction in cavities. (Of course, if the fluoride increased cavities, you wouldn't want to use it.) All of these varied results would be indicated in terms of the dependent variable.

If only the subjects do not know who is getting the fluoride, it is a single blind experiment. If both the subjects and experimenter do not know, it is a double blind.

I hope this helps. If not, repost with more details. Thanks for asking.

Sure! I can help you with that. Designing a research study involves several steps. Here's a simplified guide to help you get started:

1. Identify your research question: Clearly define the problem or the area you want to investigate. Make sure your research question is specific, measurable, and relevant to your field of study.

2. Review existing literature: Conduct a literature review to gain a solid understanding of the current state of knowledge in the field. This will help you identify any gaps in existing research and refine your research question.

3. Choose your research approach: Determine whether you want to conduct qualitative, quantitative, or mixed methods research. Qualitative research focuses on understanding subjective experiences and behaviors, while quantitative research involves numerical data and statistical analysis. Mixed methods research combines both approaches.

4. Select your research participants: Decide on the target population or sample from which you will collect data. Consider factors such as accessibility, representativeness, and the size of your sample.

5. Choose your research design: Select the most appropriate research design based on your research question and available resources. Common research designs include experimental, correlational, descriptive, and case study designs. Each design has its own strengths and limitations.

6. Determine data collection methods: Decide on the methods and tools you will use to gather data. Examples include surveys, interviews, observations, experiments, or existing datasets. Ensure that your chosen methods align with your research question and design.

7. Develop a data analysis plan: Determine how you will analyze the collected data. Depending on your research design and chosen methods, you may utilize statistical analyses, content analysis, thematic analysis, or other relevant techniques.

8. Ethical considerations: Ensure that your research design adheres to ethical guidelines, such as obtaining informed consent from participants, protecting their confidentiality, and minimizing potential harm.

9. Plan your timeline and resources: Create a timeline that includes key milestones and allocate the necessary resources (e.g., budget, equipment) for your research project.

Remember, this is a simplified guide, and the specific details of your research design will depend on your field of study and research objectives. Consulting with a research advisor or seeking guidance from experts in your field is always recommended to ensure the best possible research design.