How to Test Your Own Reading Comprehension

Reading speed is easy to measure — words per minute is straightforward arithmetic. Reading comprehension is harder to measure and therefore more often ignored. Most readers who claim to "speed read" have a WPM number but no comprehension measure — which means they are tracking the input side (words passing through the visual field) without tracking the output side (meaning constructed and retained).

This matters because speed without comprehension is not reading. It is word-viewing.

The free recall test: your baseline

The simplest and most ecologically valid comprehension test requires no special materials:

1. Read a text passage of 300–500 words at your typical reading speed
2. Close the text
3. Wait 10–15 minutes (do something else; allow short-term memory to settle)
4. Write down everything you remember — specific claims, examples, arguments, details

Score your recall:

• 85%+ of key points recovered: High comprehension — reading speed can be increased
• 70–85%: Adequate comprehension — current speed is appropriate for this material
• 55–70%: Moderate comprehension — consider reducing speed or applying active reading techniques
• Below 55%: Low comprehension — significantly reduce speed and/or address vocabulary gaps

This self-test is most useful when done at different WPM settings (if using RSVP) or across different text types. Your comprehension at 300 WPM for a Dostoevsky novel will be different from your comprehension at 300 WPM for a philosophy paper — and knowing this gap helps you calibrate per-domain.

The inference test

Free recall only tests what you explicitly processed. Comprehension also involves inference — understanding what a text implies but does not state. Inference capacity is harder to self-test but highly informative.

After reading a passage, ask yourself:

1. What is the author's main argument? (Not stated explicitly — synthesised from the whole)
2. What does the author assume is already known? (Background assumptions)
3. What would the author's view be on a scenario not explicitly discussed in the text?
4. What is the strongest objection to the author's argument?

Your ability to answer these questions tests higher-level comprehension — the kind assessed in GRE, LSAT, and academic reading comprehension tests, and the kind most relevant to genuinely understanding a non-fiction book.

If you find these questions hard after reading at high speed, you are reading faster than your comprehension supports for this material.

The delayed recall test

The free recall test immediately after reading measures short-term comprehension. What matters for most reading purposes is long-term retention — what you can access a week or month later.

A more demanding comprehension test:

1. Read a chapter or article
2. Do not test yourself immediately
3. Return to the same material after 48 hours or one week
4. Without looking at the text, write down the key points
5. Compare against the original

This test reveals how much of your immediate comprehension converted to durable memory — the gap is typically larger than readers expect, and it is the gap that spaced repetition and retrieval practice techniques are designed to close.

Calibrating RSVP speed using comprehension tests

When using warpread.app or any RSVP reader, comprehension testing enables systematic speed calibration:

1. Read a passage at your current WPM setting
2. Free recall test immediately after
3. If recall is above 80%: increase WPM by 25–50 for the next passage
4. If recall is between 70–80%: maintain current WPM
5. If recall is below 70%: decrease WPM by 25–50

Repeat over several sessions across different material types. After 2–3 weeks of this calibration, you will have per-domain WPM settings that optimise speed-comprehension trade-off for your specific reading profile.

This is the evidence-based approach to RSVP training — not "push as fast as possible and hope comprehension follows" but "increase speed until comprehension begins to drop, then stabilise just above that threshold."

The vocabulary comprehension test

If comprehension drops consistently in specific passages, identify whether the problem is vocabulary. After a passage where comprehension was poor, review the text and identify words that were unfamiliar or required inference.

If you can identify 5 or more unfamiliar words per 1,000 words, vocabulary is almost certainly the binding constraint — you are below the 95% lexical coverage threshold needed for comfortable comprehension. See our vocabulary and reading speed guide for targeted vocabulary building strategies.

If vocabulary is adequate but comprehension still suffers, the issue is more likely working memory (for syntactically complex passages) or prior knowledge (for domain-unfamiliar material).

What good comprehension actually looks like

Some readers mistake recognition for comprehension. You can recognise text you have read — feel it is familiar, recall that you read it — while being unable to retrieve the specific claims, reasoning, or evidence. True comprehension means:

• You can state the main argument in your own words without looking
• You can identify the key supporting evidence and why it supports the argument
• You can explain what the text implies about situations it does not explicitly discuss
• You can identify what would need to be true for the argument to fail

This standard is higher than most readers apply in practice. It is also the standard that makes reading genuinely useful — that converts reading time into knowledge you can actually use. Comprehension testing is the only way to know whether your reading is meeting it.

Read with comprehension tracking on warpread.app — free RSVP reader

References

• Rayner, K., Schotter, E.R., Masson, M.E.J., Potter, M.C., & Treiman, R. (2016). So Much to Read, So Little Time. Psychological Science in the Public Interest, 17(1), 4–34.
• Masson, M.E.J. (1983). Conceptual processing of text during skimming and rapid sequential reading. Memory & Cognition, 11(3), 262–274.
• Perfetti, C., Landi, N., & Oakhill, J. (2005). The acquisition of reading comprehension skill. In M.J. Snowling & C. Hulme (Eds.), The Science of Reading. Blackwell.
• Nation, K. (2019). Children's reading difficulties, language, and reflections on the simple view of reading. Australian Journal of Learning Difficulties, 24(1), 47–73.