Why order matters in accessible web structure

I recently read a study about how men and women visually scan their environment differently, and it sparked a thought: what if people with different disabilities also scan and process web content in distinct orders?

We often focus a lot on mandatory elements (headings, landmarks, ARIA roles, labels), but I believe we do not talk enough about the order in which people encounter content and how that order impacts usability for diverse users.

Here’s what research tells us

1️⃣ People with dyslexia have different gaze and search patterns

A controlled eye-tracking study comparing people with and without dyslexia found that searchers with dyslexia exhibit distinct gaze behaviors and strategies when interacting with web search results and content. This reflects the extra cognitive effort required to process text and navigate pages.

Why it matters: long chunks of uninterrupted text or poorly structured reading order increases cognitive load for people with dyslexia. Logical, sequential structure helps, especially when paired with assistive tools.

2️⃣ Typographic and layout choices influence reading performance across populations

Research into typographic variables confirms that visual factors affect eye movements and reading performance and these effects are stronger for people with reading or attention challenges.

Why it matters: it’s not just what we say - how and in what order we present it affect accessibility for diverse readers.

3️⃣ People with autism exhibit different web gaze patterns

Eye-tracking research comparing participants with high-functioning autism and neurotypical controls found measurable differences in how they visually explore web pages, especially in tasks where they had to search or interpret information.

Why it matters: users with autism may rely more on predictable content patterns and clear sequential order, reducing the need to search around the page for structure.

4️⃣ Users who are blind or visually impaired rely on sequential access technologies

People with visual impairments often use screen readers or magnifiers to navigate the web. Screen readers, for example, linearize content into a reading order that must reflect logical structure to make sense.

Why it matters: for non-visual users, order is the interface. The sequence in which content is read aloud dramatically impacts comprehension.

5️⃣ Cognitive or attention disabilities benefit from predictable content flow

Simplified layout, chunked information, and predictable sequencing benefit people with ADHD, anxiety, and cognitive processing challenges, because it reduces distraction and improves comprehension.

Here are practical takeaways

✅ Align DOM order with task priority.
✅ Use clear, meaningful headings in sequence.
✅ Chunk and simplify content.
✅ Test with real diverse users.
✅ Support customization.