Formulating a hypothesis is one of the key stages in preparing a dissertation, and it largely determines the structure and logic of the research that follows. What criteria must a hypothesis meet? What mistakes do scholars most often make when formulating it? We look at how to construct a dissertation research hypothesis.
What is a research hypothesis and what role does it play in a dissertation?
A hypothesis is a scientifically grounded assumption about the nature of the connection between the object and the subject of the study, which a scholar puts forward at the initial stage of the work and seeks to confirm or refute during the research. It is formulated on the basis of an analysis of theoretical sources and existing data on the topic and sets the direction for the entire dissertation.
The hypothesis is directly linked to the aim and objectives of the research: it explains what result the scholar expects to obtain and how they plan to substantiate it. If the hypothesis is missing or vaguely formulated, this makes it harder to assess the methodological soundness of the work and may prompt additional questions at the defence.
Requirements a hypothesis must meet
A well-formulated hypothesis for a dissertation is developed with a number of criteria in mind.
The main ones can be summarised as follows:
- Verifiability. The hypothesis must be open to empirical or theoretical testing within the methodology chosen for the study.
- Specificity. The wording must not allow for double interpretation and should be expressed in terms accepted in the relevant academic field.
- Scientific novelty. The assumption should not amount to a well-known fact that requires no proof.
- Logical connection with the object and subject. The hypothesis must follow directly from the object and subject of the study and correspond to its aim and objectives.
- Practical or theoretical significance. Confirming or refuting the hypothesis should bring some value to academic knowledge or practice.
Meeting these requirements simplifies further work on the dissertation and reduces the likelihood of comments from the supervisor or the dissertation board.
How to formulate a hypothesis correctly: where to start?
Formulating a hypothesis is a sequential process that requires a certain amount of preparation. When constructing a hypothesis for dissertation research, the following sequence of actions is usually followed:
- study the theoretical sources and existing data on the research topic
- identify the problem that requires explanation or resolution
- identify the expected relationship between the object and the subject of the study
- formulate the assumption as an affirmative statement rather than a question
- check the wording against the criteria of verifiability, specificity and novelty
A hypothesis is usually expressed through an “if – then” construction or as an affirmative statement about the nature of the connection between phenomena. It is worth avoiding overly cautious wording such as “possibly” or “probably” – the final version should read as a clear scientific assumption that is then tested during the research.
Types of hypotheses in dissertation research
Depending on the nature of the study and the methodology used, scholars distinguish several types of hypotheses. A descriptive hypothesis records the presence of a connection between phenomena without explaining its causes. An explanatory, or causal, hypothesis reveals the cause-and-effect relationships between the object and the subject of the study.
For empirical and quantitative studies, a distinction is also made between a working hypothesis and a statistical hypothesis, with the statistical hypothesis in turn including null and alternative formulations. The choice of a particular type of hypothesis depends on the specifics of the academic field, the nature of the data collected and the objectives set out in the dissertation.
What mistakes are most often made when formulating a hypothesis?
Among the typical mistakes that reduce the quality of a dissertation research hypothesis, the following can be highlighted:
- vague wording without clear evaluation criteria
- an inability to test the assumption within the chosen methodology
- restating a well-known fact that requires no proof
- a mismatch between the hypothesis and the object, subject or aim of the study
A separate difficulty arises when several assumptions are combined in a single formulation – in such cases, logical clarity is lost and the verification process becomes more complicated.
A research hypothesis is a tool that determines the logic of the entire work and helps build the argument for the defence. A careful approach to its formulation at the initial stage reduces the risk of methodological comments and makes further work on the dissertation easier.
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