The term can also mean the paper title or the header at the top of each page. This guide covers all three meanings, then shows how section headings work in APA, MLA, and Chicago.
Title vs. Heading vs. Subheading vs. Header
These four terms get mixed up often, but they mean different things in academic writing. Sorting them out is the fastest way to answer what a research paper heading actually is.
| Term | What it is | Where it appears |
|---|---|---|
| Title | The main heading that names the whole paper | Once, on the title page or first page |
| Heading | A label for a major section of the body | At the start of each main section |
| Subheading | A label for a subsection inside a section | Beneath a heading, when a section splits |
| Header | A formatting element in the top margin | Every page, with page number or short title |
The title (the paper's main heading)
The title is the most-read part of any paper and is usually read first. A strong title states the topic and scope clearly and includes the terms a reader would search for.
Vague titles like African Politics could describe a whole book on the subject. A focused title tells the reader exactly what your paper investigates and why.
To draft one, describe your paper in two or three plain sentences. Cut filler like a study of or an investigation into, then trim to about 10 to 15 words.
Write the title after the paper is finished so it reflects what you actually did. For the full method, see our guide on how to write a research paper.
Section headings and subheadings
Section headings are what most people mean by "the heading of a research paper." They split the body into labeled parts so readers can follow your argument in order.
A heading names a major section, and a subheading names a smaller part within it. For example, Methods is a heading, and Participants under Methods is a subheading.
The rest of this guide focuses on this second meaning, since it drives most student questions about headings.
The page header
The header is a formatting feature, not part of your argument. It sits in the top margin of every page and usually holds the page number.
In APA papers submitted for publication, the header can also carry a shortened title called a running head. MLA papers add a heading block on the first page with your name, instructor, course, and date.
This part is a word processor task, and the setup steps come later in this guide.
How Heading Hierarchy and Levels Work
A heading hierarchy is the order of importance among your headings. Main sections get the top level, and subsections step down from there. The formatting of each level shows the reader where they are.
Two rules control the hierarchy in every major style. Follow both and your structure will read cleanly.
Start at the top and never skip a level. Begin with your highest level and move down in order. You cannot jump from a top-level heading straight to a third-level heading with nothing between them.
Never leave a lone subheading. If you have one subsection under a heading, you need at least two. A single subheading tells the reader the division was not needed in the first place.
When you actually need subheadings
Subheadings earn their place when a section covers several distinct points. If a section runs long across clearly separate ideas, subheadings help the reader keep track.
If a strong topic sentence already carries a paragraph, skip the subheading. Short papers often need few headings, or none at all.
Do not add subheadings to cover for weak paragraph structure or unclear thinking. For help building that structure first, see our essay structure guide and how to write an essay outline.
Research Paper Heading Formats by Style
The exact look of a heading depends on the style your assignment or journal follows. Here are the three most common, drawn from each style's own standard.
APA heading levels (7th edition)
APA uses a five-level system. Use only as many levels as your paper actually needs, since a short paper may need just one level or none.
Two APA rules stand out. The introduction never gets its own heading because the paper title serves that role. And APA headings are never numbered or lettered.
| Level | Format |
|---|---|
| 1 | Centered, Bold, Title Case. Text begins as a new paragraph. |
| 2 | Flush Left, Bold, Title Case. Text begins as a new paragraph. |
| 3 | Flush Left, Bold Italic, Title Case. Text begins as a new paragraph. |
| 4 | Indented, Bold, Title Case, ending with a period. Text begins on the same line. |
| 5 | Indented, Bold Italic, Title Case, ending with a period. Text begins on the same line. |
All APA headings are double-spaced with no extra blank lines above or below. For related rules, see our APA citation format guide.
MLA headings (9th edition)
MLA is more flexible than APA on purpose. Rather than a fixed table, MLA asks you to style headings in descending order of prominence.
Use a larger or bold font for the top level, and smaller or italic for lower levels. Keep the styling the same for every heading of the same level throughout the paper.
A few other MLA rules to follow. Keep headings flush left, add a blank line above and below, use title case, and keep them short.
Avoid numbering unless your field expects it. The balance rule still applies, so no level should appear only once. See our MLA citation format guide for more.
Chicago and Turabian headings
Chicago focuses on a clear descending hierarchy with consistent formatting. Main headings are usually bold or larger, and subheadings step down in prominence.
Title case is standard, and most headings sit flush left. Unlike APA, Chicago allows numbered sections such as 1. Introduction or 2.1 Participants, which help in longer technical works.
Numbering is optional in Chicago and left to your judgement. Full rules are in our Chicago citation style guide.
The same paper across three styles
Here is one Methods section shown three ways so you can see the difference at a glance.
APA
- Method (Level 1, centered, bold)
- Participants (Level 2, flush left, bold)
- Materials (Level 2, flush left, bold)
MLA
- Method (top level, bold, flush left)
- Participants (second level, italic, flush left)
- Materials (second level, italic, flush left)
Chicago (numbered)
- 2. Method
- 2.1 Participants
- 2.2 Materials
The wording stays the same across all three styles. Only the visual signal of hierarchy changes.
If your styles differ on more than headings, see our academic formatting styles compared guide for the wider view.
Worked Example: Headings in a Real Paper
Here is a complete APA hierarchy in a paper with nested subsections. Every subsection sits under a section, and no level appears alone.
- Method (Level 1)
- Research Design (Level 2)
- Participants (Level 2)
- Recruitment. (Level 3)
- Screening. (Level 3)
- Procedure (Level 2)
- Results (Level 1)
- Primary Outcomes (Level 2)
- Secondary Outcomes (Level 2)
- Discussion (Level 1)
A reader can scan this and see the paper's structure at once. That is the whole point of a heading.
Writing Effective Headings: Strong vs. Weak
A heading should tell the reader exactly what the section does. The most common failure is a heading that is technically correct but says nothing useful.
| Weak heading | Stronger heading | Why it works |
|---|---|---|
| Background | Historical Factors Shaping Migration | Names the actual content |
| More Information | Limitations of the Current Model | Sets a clear expectation |
| Results Part 2 | Anxiety Reduction in the Treatment Group | Previews the finding |
| Analysis | Comparing Survey and Interview Data | States what is compared |
Two practical rules fix most heading problems. Keep each heading short and descriptive, closer to a phrase than a full sentence.
Keep parallel structure within a level. If one subsection is Recruitment, the next should be Screening, not How We Screened Participants.
Consistency matters more than variety in academic writing. Statement-style headings usually read as more confident than questions in formal work.
Headings by Discipline and Paper Type
Not every research paper uses the same headings. The convention depends on your field and the type of paper you are writing.
IMRaD (sciences and social sciences)
Papers reporting original research usually follow IMRaD: Introduction, Methods, Results, and Discussion. A title, abstract, and references sit around these core sections.
Here headings are largely fixed. Readers expect Methods to appear where Methods belongs.
Subheadings then break down the mechanics, such as design, participants, procedure, and analysis.
Thematic (humanities)
History, literature, and philosophy papers rarely use Methods and Results. They organize around themes or arguments, and the headings name those themes.
For example, a paper on wartime propaganda might use Recruitment and Patriotism as a section heading. The headings carry the logic of the argument, not the stages of an experiment.
Student paper vs. journal manuscript
A short student paper may need no headings at all. A journal manuscript almost always does and must follow the target journal's author guidelines.
Those guidelines sometimes override the base style rules. When in doubt, the assignment brief or journal instructions win over any general rule.
Setting Up Headings in Word and Google Docs
Type your heading, then apply your word processor's built-in heading style. Do not manually bold the text and hope for the best.
Using the Styles menu keeps formatting the same across the whole document. It also codes headings so screen readers and navigation tools can move through the paper.
Manual formatting does not give you either benefit. For APA Levels 4 and 5, which run inline with paragraph text, type the heading plus a few words of the next sentence.
Highlight only the heading portion and apply the style to that. For the page header, use the header area and the built-in page numbering tool.
If your paper has a title page, turn on "different first page" so the header starts on the body page rather than the cover.
Common Research Paper Heading Mistakes
The same mistakes show up in student papers again and again. Avoiding these will fix most heading problems on their own.
- Skipping levels by jumping from a top-level heading straight to a third-level one.
- Leaving a single lone subheading under a section with no second to balance it.
- Numbering APA headings when APA rules do not allow numbers or letters.
- Using all caps for headings, which is harder to read across every style.
- Writing headings as full sentences instead of short descriptive phrases.
- Mixing keyword-style and sentence-style headings within a single level.
- Revising your structure but leaving old headings in place afterward.
- Adding an "Introduction" heading in APA when the title already covers it.
Do You Even Need Headings?
Headings are not required for every paper. Use this quick check before adding them to your draft.
Length. Short essays under about 2,000 words often read fine on strong paragraphs alone. Longer or multi-part papers benefit from headings that break the argument into visible chunks.
Discipline. Psychology, nursing, education, business, and the sciences usually expect headings, even at undergraduate level. Some humanities essays skip them completely.
Task. Assignments asking you to discuss, evaluate, or compare several elements usually justify headings. A single continuous argument may not need them.
The brief. If your instructor or journal specifies an approach, follow that over any general rule. Headings support clear writing, but they do not replace it.
Frequently Asked Questions
What is the heading of a research paper?
It can mean the paper title, a section heading in the body, or the header in the top margin. Most often it refers to the section headings that organize the paper.
What is the difference between a title and a heading?
The title names the whole paper and appears once at the top. A heading labels one section of the body and appears at the start of that section.
Does the title count as a heading?
Yes, in function it does. It is the paper's main heading, and in APA it acts as the top-level heading so the introduction needs no separate label.
Can a heading be a question?
It can, especially in reflective or exploratory writing. Statement-style headings read as more confident and are more common in formal academic work.
How many headings should a research paper have?
Only as many as needed to mark distinct sections. Use the number of levels your paper's complexity actually requires.
Can I number my headings?
Not in APA. MLA and Chicago allow numbering such as 2.1 Participants if you apply it consistently and your field accepts it.
Do headings count in the word limit?
Usually yes, but this varies by institution. Check your guidelines if you are close to the word count limit.
Why does the introduction not get a heading in APA?
The opening of a paper is understood to be introductory on its own. The paper title already acts as the top-level heading, so a separate label would be redundant.
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