Transition Words for Research Papers by Function

Transition words for research papers are the words and phrases that tell a reader how one idea relates to the one before it: addition, contrast, cause, sequence, example or conclusion. The practical rule is to choose each transition by the logical relation you mean, not by whichever word sounds most academic, and to treat the word as the last step of making that relation visible, not the first.

Purpose of transitions in a research paper

The UNC Writing Center describes transitions as “words with particular meanings that tell the reader to think and react in a particular way to your ideas.” They help readers follow how your ideas fit together, which matters most in a manuscript, where a reviewer or editor reads quickly and has no chance to ask what you meant.

Two limits apply from the start. First, the same source is explicit that transitions “cannot substitute for good organization, but they can make your organization clearer and easier to follow.” Second, they are “not just verbal decorations”: a connector that does not match the actual relation between two sentences misleads the reader rather than guiding them.

Transition words work at the sentence level. For roadmap sentences that announce the structure of a whole section, see signposting language in academic writing; the two are related but not the same device. For the wider picture of why a text reads as connected, see cohesion and coherence in academic writing, where conjunction is one of several cohesive devices.

Transition words by logical function

Pick the row that names the relation you intend, then choose from its words. The groupings and examples below follow the UNC Writing Center’s transitions handout (checked 2026-10-29).

Additional support. Adds a further point of the same kind: additionally, again, also, and, as well, besides, equally important, further, furthermore, in addition, moreover, then.
Similarity. Signals that the next idea resembles the previous one: also, in the same way, just as … so too, likewise, similarly.
Exception or contrast. Signals that the next idea runs against the previous one: but, however, in spite of, on the one hand … on the other hand, nevertheless, nonetheless.
Cause and effect. Signals that one statement follows from another: accordingly, consequently, hence, so, therefore, thus.
Example. Introduces an instance of what you just claimed: for example, for instance, namely, specifically, to illustrate.
Emphasis. Marks a point as especially important or surprising: even, indeed, in fact, of course, truly.
Sequence or order. Orders steps or items: first, second, third, next, then, finally.
Time. Places events relative to one another: after, afterward, at last, before, currently, during, earlier, immediately, later, meanwhile.
Place or position. Locates things in space: above, adjacent, below, beyond, here, in front, in back, nearby, there.
Conclusion or summary. Closes a point or section: in brief, briefly, in conclusion, in the end, on the whole, to sum up, in summary.

Some words appear under more than one function (“then” signals both sequence and added support), which is the reason to decide the relation first. AJE, a publisher-services editing resource, adds a related warning: transitions “that are similar in meaning are not necessarily interchangeable,” and gives “in conclusion” versus “thus” as an example. UNC likewise notes that each word or phrase “may have a slightly different meaning.” AJE also observes that sequence words fit lists and processes, “such as in the methods section.”

Connecting paragraphs, not just sentences

A single word is often too thin to carry the link between two paragraphs. Purdue OWL recommends picking up a key phrase from the previous paragraph and writing a transition “that could only connect one specific paragraph to another specific paragraph.” Its contrast: an opener like “Another important thing to note” disconnects, while a phrase that refers back to the earlier material shows the relation.

AJE describes a second technique at sentence boundaries: use a demonstrative pronoun (this, that, these, those) to point back to the previous sentence, and add a noun when “this” alone would be vague, as in “this technique” rather than a bare “this.”

A short annotated example

Illustrative composite written for this guide, not a quotation from a published paper.

Before (wrong relation): “Reaction times were slower in the treated group. Similarly, the control group responded faster.”

The second sentence contrasts with the first, but “similarly” is a similarity word (see the Similarity group above), so it tells the reader to expect more of the same.

After: “Reaction times were slower in the treated group. However, the control group responded faster.”

“However” belongs to the Exception or contrast group and now matches the relation. Next, a paragraph-level link:

Before: End of paragraph one: “Results varied across the three sites.” Start of paragraph two: “Another important thing to note is the revised protocol.”

After: Start of paragraph two: “These site-to-site differences led to a revised protocol.”

The repeated phrase and the noun after “these” tie the paragraphs together and state the causal link, using the techniques from Purdue OWL and AJE described above.

Common mistakes

Choosing by synonym. Treating “thus,” “hence” and “in conclusion” as interchangeable when each signals a different relation.
Using a transition as decoration. Adding a connector to a sentence pair that has no real logical link. UNC warns against transitions as “verbal decorations.”
Writing in discrete chunks. UNC names the pitfall of drafting sections separately and pasting them together, then relying on transitions to hide the joins.
Vague pronouns. A bare “this” at the start of a sentence with several possible referents. Add the noun.
Generic paragraph openers. “Another important thing to note” and similar phrases that could sit anywhere, so they connect nothing in particular.
Ignoring house style on sentence-initial conjunctions. AJE’s stated position is that coordinating conjunctions should not begin a sentence in formal writing; treat that as one editor’s rule and follow the target journal’s author instructions.

Checklist: self-edit your transitions

For each sentence pair or paragraph boundary, name the relation in plain words (adds, contrasts, causes, exemplifies, orders, concludes).
Choose a word from the matching function group above and check it does not carry a different meaning in your context.
At paragraph boundaries, try repeating a key phrase from the previous paragraph instead of a generic opener.
Replace any bare “this,” “that,” “these” or “those” that could point to more than one thing.
If you cannot write a transition that fits, the problem is usually the order of the ideas, not the wording. Purdue OWL puts it directly: if transitions are hard to write, “the paragraphs don’t belong together at all.” AJE agrees that if a manuscript is not well organized, transitions will not be sufficient, so outline the progression first.
Check the finished text against the journal’s formatting and style rules; see manuscript format for journal submission.

When you reuse wording from other sources while revising, keep the connectors honest to your own argument; paraphrasing in academic writing covers rewriting without distorting the relation between ideas. For the broader conventions of scholarly prose, see what is academic writing.

FAQ

Are transition words the same as signposting?

No. Transition words are connectors that show the relation between adjacent ideas, such as “however” or “therefore.” Signposting language announces or recaps the structure of a longer stretch of text. See the signposting guide.

Can I swap one transition word for a similar one?

Only if the relation stays the same. Both UNC and AJE note that words that look similar can differ in meaning, so choose by the logical relation, not by the closest synonym.

Can a sentence start with “and” or “but” in a paper?

AJE advises against starting a sentence with a coordinating conjunction in formal writing. Treat that as one editor’s rule and follow the target journal’s author instructions.