RSVP vs Traditional Reading: What Cognitive Science Says
An RSVP reader removes eye movements by showing one word at a time. It feels fast. Here's what studies found when they tested it.
Rapid Serial Visual Presentation (RSVP) streams words one after another in a fixed spot on a screen. It removes eye movements, but also the chance to look back. Studies have found that comprehension falls as speed rises, and that it can increase eye fatigue, so it's best for easy text at speeds close to your normal pace.
In 1970, cognitive psychologist Prof. Kenneth Forster published an unassuming paper in Perception & Psychophysics titled "Visual perception of rapidly presented word sequences of varying complexity."
Forster and other psychologists wanted to study how people process sentences, without the complication of eye movements.
So they showed words one after another in the same place on a screen. This became known as Rapid Serial Visual Presentation (RSVP). It was a research tool long before it became a speed reading app.
What he and subsequent researchers discovered over the next five decades—including groundbreaking work by Prof. Mary C. Potter at MIT—fundamentally transformed our understanding of human visual cognition.
What Is Rapid Serial Visual Presentation (RSVP)?
Rapid Serial Visual Presentation (RSVP) shows words one at a time in the same spot on screen. That removes eye movements along the line. It also removes the option to look back, which is one reason comprehension tends to drop at high RSVP speeds.
In normal reading, your eyes do several things that RSVP removes:
- •Jumps along the line: your eyes stop about every 7–9 letters.
- •Return sweeps: at the end of a line, your eyes go back to find the next one.
- •Looking away from words: you see very little during each short jump.
- •Looking back: about 10–15% of eye movements go backward (Rayner, 1998). These aren't wasted: they help you understand (Schotter et al., 2014).
Even so, eye movements themselves take only a small share of reading time; most of the time goes to understanding the words during fixations (Rayner et al., 2016).
What Is the Optimal Recognition Point (ORP) in Speed Reading?
The Optimal Recognition Point (ORP) is the letter an RSVP app lines up in each word, usually about a third of the way in. The idea builds on research by J.K. O’Regan, which found that words are recognized a little faster when you look slightly left of center.
In 1981, J.K. O’Regan described a “convenient viewing position”: the spot in a word where it is easiest to recognize, a little left of center.
We don’t offer an RSVP reader. If you want help holding a steady pace without losing the ability to look back, our Reading Pacer moves a guide across normal lines of text.
What Are the Trade-offs of RSVP vs Traditional Reading? (Comparison Table)
The main advantage of RSVP is that you don't need to move your eyes, which is handy on a small screen. The main trade-off is that you can't glance back, so comprehension tends to fall as speed rises.
| Cognitive & Physical Metric | Traditional Linear Page | RSVP Streaming Text |
|---|---|---|
| Eye Movement | Jumps along each line | None |
| Looking Back | Natural, and helps comprehension | Requires pausing and rewinding |
| Typical Speed | Most adults: 175–300 WPM | You choose; comprehension falls as it rises |
| Eye Fatigue | Normal | Can be higher; people blink less |
| Re-reading | Instant (Glance back) | Requires pause / rewind button |
When Should You Use an RSVP Speed Reader (and When to Avoid It)?
In their 2016 review in Psychological Science in the Public Interest, Keith Rayner and his co-authors noted that when readers encounter complex syntactic ambiguities (garden-path sentences), look-backs are essential for comprehension.
Rule of Thumb:
- Use RSVP For: easy articles and newsletters, especially on a small phone screen.
- Stick to Normal Reading For: anything you need to remember or study, and anything with difficult ideas, numbers or diagrams.
Keep the Page, Keep a Steady Pace
Our free Reading Pacer moves a guide across your own text, PDF or EPUB at the speed you set, and you can still look back when you need to. Your text stays in your browser.
Academic References & Primary Sources
- Forster, K. I. (1970). Visual perception of rapidly presented word sequences of varying complexity. Perception & Psychophysics, 8(4), 215–221. doi:10.3758/BF03210208
- O’Regan, J. K. (1981). The "convenient viewing position" hypothesis. In D. F. Fisher, R. A. Monty, & J. W. Senders (Eds.), Eye Movements: Cognition and Visual Perception (pp. 289–298). Erlbaum. Reissued by Routledge, 2017. doi:10.4324/9781315437415-24
- Potter, M. C., Wyble, B., Hagmann, C. E., & McCourt, E. S. (2014). Detecting meaning in RSVP at 13 ms per picture/word. Attention, Perception, & Psychophysics, 76(2), 270–279. doi:10.3758/s13414-013-0605-z
- Rayner, K., Schotter, E. R., Masson, M. E., 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
- Benedetto, S., Carbone, A., Pedrotti, M., Le Fevre, K., Bey, L. A. Y., & Baccino, T. (2015). Rapid serial visual presentation in reading: The case of Spritz. Computers in Human Behavior, 45, 352–358. doi:10.1016/j.chb.2014.12.043
- Ricciardi, O., & Di Nocera, F. (2017). Not so fast: A reply to Benedetto et al. (2015). Computers in Human Behavior, 69, 381–385.
- 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
Frequently Asked Questions
What is RSVP reading?▼
RSVP (rapid serial visual presentation) reading shows words one at a time in the same spot. It was used as a research method from about 1970 (Forster, 1970), and later became popular in speed reading apps.
Does an RSVP reader reduce eye strain?▼
Probably not. Apps often claim it does, but one study found that people blinked less and reported more eye fatigue with RSVP than with normal reading (Benedetto et al., 2015). If you use it, take breaks and remember to blink.
What is the Optimal Recognition Point (ORP)?▼
ORP is a term used by RSVP apps for the letter they line up in each word, usually about a third of the way in. It builds on research by J.K. O’Regan and others showing that words are recognized a little faster when you look slightly left of center.
Does RSVP speed reading work?▼
Not without a cost: comprehension falls as RSVP speed rises. Rayner et al. (2016) found that comprehension falls as RSVP speed rises, partly because you can’t look back. Benedetto et al. (2015) found worse literal comprehension with RSVP, and a follow-up found losses above about 250 WPM (Ricciardi & Di Nocera, 2017). When researchers stopped people from re-reading normal text, comprehension also fell (Schotter et al., 2014).