Define, compare and choose common and appropriate research methodologies, designs andmethods to generate evidence and answer specific research questions.

Defining Research Methodologies, Designs, and Methods:

1. Research Methodologies: These are the strategies, plans, procedures, and processes that researchers use to collect, analyze, and interpret data. They guide the researcher in their journey of exploring, understanding, and explaining a particular phenomenon.

2. Research Designs: These are the blueprints for conducting a study. They provide the structure and direction for the collection, measurement, and analysis of data. Common research designs include experimental, quasi-experimental, and non-experimental designs.

3. Research Methods: These are the specific tools and techniques used to collect and analyze data. They can be qualitative (e.g., interviews, focus groups, observations) or quantitative (e.g., surveys, experiments, statistical analysis).

Comparing Research Methodologies, Designs, and Methods:

1. Research methodologies guide the overall approach to a research project, while research designs provide a detailed plan for data collection and analysis. Research methods, on the other hand, are the specific tools used within these designs to gather and analyze data.

2. Research methodologies and designs are more abstract and theoretical, while research methods are more practical and concrete.

Choosing Appropriate Research Methodologies, Designs, and Methods:

The choice of research methodologies, designs, and methods depends on several factors:

1. Research Question: The nature of the research question often dictates the methodology and design. For example, if the question is about exploring people's experiences, a qualitative methodology might be appropriate. If the question is about determining the effect of a treatment, an experimental design might be needed.

2. Resources: The availability of time, money, and personnel can also influence the choice of methodology, design, and methods.

3. Skills and Expertise: The researcher's skills and expertise can also play a role in the choice of methodology, design, and methods.

4. Ethical Considerations: Some methodologies, designs, and methods may raise ethical issues that need to be considered.

In conclusion, the choice of research methodologies, designs, and methods is a critical step in the research process. It requires careful consideration of the research question, available resources, researcher's skills and expertise, and ethical considerations.