Introduction to writing a thesis – structure, examples & tips

Many theses fail not because of their methods or results, but right at the beginning with the introduction to a bachelor’s thesis, master’s thesis, or doctoral dissertation.

A weak introduction costs you points, tests your readers’ patience, and often leads to shaky arguments in the rest of the thesis.

Here you’ll learn how to avoid exactly that and what you need to keep in mind when writing your introduction.

What the introduction is really for

The introduction to your thesis has one central task: It answers the question of why your research is needed.

To do this, you guide your readers along the shortest logical path through the relevant literature and toward your research objectives or hypotheses.

What content belongs in the introduction?

1. Context & Relevance
   • What is the overarching problem/topic?
   • Why is it practically/theoretically significant?
     
2. Core findings: What do we know?
   • 2–4 key findings from the literature (logically linked)
   • Show the conflict or gap—briefly and purposefully.
     
3. Gap(s) and objective(s): What don’t we know?
   • Clear, precise, testable (2–4 sentences)
   • Let the hypothesis visibly emerge from paragraphs 2–3
     
4. Approach (Plan of Attack)
   • What are you doing at a high level (sample, setting, method)
   • Why does this fit the objective/hypothesis?

Create a logical line of reasoning

Before formulating paragraphs for your introduction, it is worth sketching the line of argument in bullet points. This allows you to identify gaps immediately and avoid unnecessary detours.

Example

This line of reasoning sounds absurd, but it is quite instructive (inspired by Moggie et al., 2007):

• Observation: In living rooms, blue cats often seem warmer than red ones.
• Explanation A: Blue fur absorbs more infrared radiation – which could explain the warmth.
• Counterthought: Blue animals may have more mitochondria → higher metabolism.
• Conclusion: If metabolism is the reason, blue cats should remain warmer even without heat from a fireplace.
• Hypothesis/Objective: Blue cats are warmer than red ones regardless of infrared sources.

Why logic is so important

A typical mistake, that keeps happening is introductions that sound like checklists – Lots of interesting facts, but no connection.

To avoid this, ask yourself instead: What argument am I building right now?
Two simple indicators will help you check the logic:

Of course, facts can be included: short definitions, brief explanations of a method, a sentence about the significance of the field. But everything should be relevant to the logic—not included for its own sake.

How to justify the need for your thesis

In principle, there are two ways to justify the added value of your work:

Long literature review in the introduction?

Basically, no—the introduction to your bachelor’s thesis, master’s thesis, or dissertation is not an extensive literature review. Nevertheless, you need to briefly present the most important previous research so that it is clear why your work is necessary.

Therefore, only summarize the relevant studies that directly lead to your research question.

Avoid these mistakes in the introduction

Practical tip: How to plan it properly

Preparation

• Create the logical path as bullet points before designing the methodology
• Formulate research objectives and/or hypotheses from this
• First, define your research methods

While writing

• Sketch your initial introduction
• Describe your research methods
• Analyze your results
• Move on to the discussion

Conclusion

Your introduction is not a “nice-to-have,” but the steering wheel of your entire thesis.

Find the shortest logical path, make bold connections, explain them clearly – and leave readers almost able to guess what you are about to do.

If this succeeds, the rest of your work will be built on a solid foundation.