What Is RSVP Speed Reading? How It Works and What the Research Says

RSVP speed reading (Rapid Serial Visual Presentation) shows text one word at a time in the same spot on the screen. Your eyes stay still while the words come to you, at a speed you set. It removes the work of moving along lines and finding the next one. It does not remove the work of understanding, which is why the speed you choose matters.

This guide covers how RSVP works, what the red letter in RSVP apps is for, what the research says about speed and comprehension, and how to start without losing track of what you read.

How RSVP works

When you read a page, your eyes don't glide. They jump from one spot to the next, pause briefly to take in a word or two, and sometimes jump back to check something. RSVP replaces that with a steady stream:

1. The text is split into words, or small groups of words.
2. Each word appears in a fixed position for a set time. At 300 words per minute (WPM), that is 200 milliseconds per word.
3. Good RSVP readers adjust the timing. Longer words and punctuation get a little more time, and the end of a sentence gets a short pause.
4. You can pause, rewind and change the speed at any time.

It feels different from reading a page. You can't skip ahead or glance back, so the pace is set for you.

What is ORP (Optimal Recognition Point)?

The Optimal Recognition Point is the letter in a word where your eye recognises it fastest. Eye-tracking studies find that this point sits slightly left of a word's centre (O'Regan & Jacobs, 1992).

RSVP apps usually mark that letter, often in red, and line every word up so the marked letter lands in the same place. Your eye can stay fixed on one point instead of hunting for where each new word begins. In Spark Read the marked letter sits about a quarter to a third of the way into each word, a little earlier for long words.

How fast can you read with RSVP?

Start with a baseline. A review of 190 studies with more than 18,000 participants found that adults read non-fiction silently at about 238 WPM and fiction at about 260 WPM. Most adults read non-fiction at roughly 175 to 300 WPM (Brysbaert, 2019).

RSVP apps can show words much faster than that. Spark Read runs from 100 to 1000 WPM. Showing words quickly is the easy part, though. The real question is how much you understand at a given speed.

Does RSVP hurt comprehension?

It can, and the research is fairly clear about when.

At ordinary speeds, RSVP holds up. A major review of speed reading research found that when words are shown at roughly normal reading speed, comprehension with RSVP is similar to normal reading (Rayner et al., 2016).

As speed rises, understanding drops. The same review found little evidence that people can double or triple their reading speed while keeping normal comprehension. At high RSVP speeds you still see every word, but you understand and remember less of what you read.

Going back matters. In normal reading, your eyes regularly jump back to earlier words, often to fix a misreading. When an eye-tracking study blocked those look-backs, comprehension fell (Schotter, Tran & Rayner, 2014). RSVP removes look-backs by design unless you rewind.

So RSVP is a trade-off you control. Read near your normal speed and you lose little. Push far past it and you will finish sooner but understand less.

When RSVP works well, and when it doesn't

RSVP suits:

• Articles, reports and non-fiction you want to get through rather than study
• Reading on a phone, where lines are short and scrolling is fiddly
• Long documents you keep putting off, read in short sessions
• Readers who find a single, fixed focus point easier to follow than lines of text

It is a poor fit for:

• Tables, charts, code and maths, which need their layout
• Dense material you need to learn closely, such as textbook chapters before an exam
• Poetry and other writing where line breaks and rhythm matter
• Hunting for one fact, where scanning a page is faster

How to start: a simple plan

1. Find your normal speed. Time yourself on a page of a book and divide the words on the page by the minutes it took, or take Spark Read's free reading speed test, which does the maths and checks comprehension too.
2. Start RSVP at that speed. Not faster. The goal of the first session is getting used to the format.
3. Keep the pauses on. Short pauses at commas and full stops give you time to take in each sentence. Spark Read adds them automatically.
4. Raise the speed in small steps. Add 25 WPM once a speed feels easy. If you finish a paragraph and can't say what it was about, go back down.
5. Rewind when you drift. In Spark Read, one tap goes back 10 words. Using it is part of reading well, not a failure.
6. Read in short sessions. Ten or fifteen minutes at a time is plenty while you adjust.

RSVP compared with other speed reading tools

RSVP is one of several approaches:

• Colour-guided reading, such as BeeLine Reader, keeps the page as it is and adds a colour gradient across each line to help your eyes find the next one. Independent evidence on its speed benefit is mixed.
• Bolded word starts, such as Bionic Reading, change how words look. Independent tests, including a 2022 experiment with nearly 2,000 readers and peer-reviewed studies since, have not found a speed benefit.
• Speed reading courses teach techniques such as reading without "hearing" the words in your head. The 2016 review found little support for large speed gains without a cost to comprehension.

For app-by-app details, see our comparison of speed reading apps.

The short version

• RSVP shows one word at a time in a fixed spot, so your eyes don't have to travel.
• The red letter marks the point where your eye recognises a word fastest.
• At normal speeds, comprehension holds up. Far above them, it drops.
• Start at your own speed, keep the pauses, raise it slowly and rewind when you need to.

Want to try it? Open Spark Read in your browser. It's free, works offline and needs no account.

Sources

• Brysbaert, M. (2019). How many words do we read per minute? A review and meta-analysis of reading rate. Journal of Memory and Language, 109, 104047. doi:10.1016/j.jml.2019.104047
• O'Regan, J. K., & Jacobs, A. M. (1992). Optimal viewing position effect in word recognition: A challenge to current theory. Journal of Experimental Psychology: Human Perception and Performance, 18(1), 185–197. doi:10.1037/0096-1523.18.1.185
• Rayner, K., Schotter, E. R., Masson, M. E. J., Potter, M. C., & Treiman, R. (2016). So much to read, so little time: How do we read, and can speed reading help? Psychological Science in the Public Interest, 17(1), 4–34. doi:10.1177/1529100615623267
• Schotter, E. R., Tran, R., & Rayner, K. (2014). Don't believe what you read (only once): Comprehension is supported by regressions during reading. Psychological Science, 25(6), 1218–1226. doi:10.1177/0956797614531148