Which typing mistake slows people down the most?

Looking at the keyboard. It caps speed, hides errors and prevents the motor memory that all further improvement depends on.

Should I correct mistakes while typing a test?

Only if the test allows backspace and counts uncorrected errors. Many official skill tests disable it, so practise both ways.

Common Typing Mistakes and How to Fix Them

The habits that cap typing speed for most learners, why they persist, and the specific correction for each.

Most typing problems are not mysterious. They come from a short list of habits, and each has a specific fix.

1. Looking at the keyboard

Why it persists: it feels faster in the moment. Cost: a hard ceiling around 40 WPM and errors you do not see. Fix: cover your hands for two weeks and accept the temporary slowdown.

2. Not returning to home row

Why it persists: small drifts are invisible. Cost: substitution errors that increase as the session goes on. Fix: consciously re-seat your index fingers on the F and J bumps after every word for one week.

3. Using one shift key for everything

Cost: wrist twist and a stumble on every capital. Fix: opposite-hand shift — left shift for right-hand letters, right shift for left-hand letters.

4. Racing then pausing

Cost: transposition errors cluster at speed changes, and consistency scores collapse. Fix: deliberately even cadence for five minutes at a time. It feels slow and is usually faster overall.

5. Fixing every error immediately

Cost: three interruptions per line destroys rhythm; many official tests disable backspace anyway. Fix: finish the word, then decide. Practise some sessions with no corrections at all.

6. Ignoring numbers and symbols

Cost: a sharp slowdown exactly when a passage contains dates, amounts or punctuation-heavy text. Fix: a dedicated five-minute numeric and symbol drill twice a week.

7. Poor posture

Cost: fatigue after ten minutes, which is when most exam tests are still running. Fix: feet flat, elbows at 90 degrees, wrists floating, screen at eye level.

8. Practising only one-minute tests

Cost: peak speed rises, sustainable speed does not. Fix: at least one long session per week at the duration you will actually be tested on.

9. Chasing the number

Cost: you optimise for a single good run instead of a reliable average. Fix: record every result and judge yourself on the weekly average.

10. Practising on a keyboard unlike the test one

Cost: unfamiliar key spacing costs several WPM on the day. Fix: if the exam uses a full-size desktop keyboard, practise on one for at least some sessions.