Research Design: Types, Examples, and How to Choose One
A practical map of experimental, descriptive, case study, longitudinal, and mixed research designs with the checks that help you defend your choice.
Start with the decision your study needs to make
A research design is the plan that connects your question, data, analysis, and evidence standard. The right design is not the fanciest one. It is the one that can answer the question without pretending the data can do more than it can.
Begin by naming the kind of claim you want to make. If you need to test cause and effect, you will need a design that controls rival explanations. If you need to describe a pattern, a descriptive or survey design may be more honest and easier to defend.
- Use experimental or quasi-experimental designs for causal questions.
- Use case study designs when context and process matter.
- Use mixed methods when one type of data cannot answer the whole question.
Defend the trade-offs before someone else finds them
Every design has a weakness. A strong methodology chapter names that weakness and explains why the design is still appropriate. A longitudinal design may be slower, but it can reveal change. A case study may be narrower, but it can explain mechanism and context.
Before drafting, write a one-paragraph defense: this study asks X, so it uses Y design, because Z evidence is required. That paragraph becomes the backbone of your methodology section.
Put the guide to work
Draft with your sources visible.
Start a Thesion project, gather sources, and keep citations attached while you build the draft.