Reading Comprehension and Content Structure: What Research Shows

How a piece of writing is organized changes how much readers understand and remember, often as much as the words themselves. Research on reading, from education studies to web usability tests, points to a handful of structural choices that consistently help.

People scan before they read

Nielsen Norman Group's eye-tracking studies found that people often scan web pages in an F-shaped pattern: they read the first lines, then the beginnings of paragraphs and headings further down, and skip much of the rest. Structure decides what they see in that scan.

Headings work as signals

Education research on "signaling", meaning headings, previews, summaries and words like "first" and "however", has long found that it helps readers remember main ideas and how they connect. Good headings act as a map: readers know where they are and what's coming.

• Make headings describe the content, not tease it.
• Keep heading levels in order, so the outline makes sense.

Lead with the point

Putting the main answer first, the "inverted pyramid" journalists use, means skimmers still get it. Details and background follow for those who want them.

Paragraphs and lists

• One idea per paragraph, with the idea in the first sentence.
• Short paragraphs on screens, where long blocks look heavier than on paper.
• Lists for steps, options and features, which are easier to scan and compare than sentences.

Plain language

Common words and shorter sentences help everyone, not just less confident readers. The US Plain Writing Act of 2010 requires federal agencies to write public documents clearly for this reason. See checking reading level.

Screens vs paper

A 2018 meta-analysis by Delgado and colleagues, combining dozens of studies, found readers understood informational texts slightly better on paper than on screens, especially under time pressure. Clear structure is one of the best ways to narrow that gap online.

Set expectations

Telling readers the reading time up front helps them decide when to start and whether to commit. Long pieces benefit from a short summary or table of contents at the top. Word Counter shows the word count and reading time for any page or selected text, so you can check a draft's length in any web editor.

A quick structure checklist

1. Can someone get the main point from the title and first paragraph?
2. Do the headings alone tell the story?
3. Is each paragraph about one thing?
4. Are steps and options in lists?
5. Would a newcomer understand every term?

See writing scannable content and how white space helps reading.