You found 8 of 10 errors in 2 minutes 45 seconds — 80% detection rate with 1 false positive
Roles that commonly require this detection accuracy level
Homophones: "their" is possessive (belonging to them), "there" indicates location or existence. Context: "suggests that there are issues" — refers to existence, not possession.
Verb vs noun confusion: "affect" is typically the verb (to influence or change). "Effect" is typically the noun (a result). Here it's used as a verb: "We affect changes based on the report."
1 false positive: You flagged "ensure" — this word is correct in context. Reducing false positives improves your net detection score.
80% detection rate means you caught 8 out of 10 planted errors. This meets the entry threshold for editorial and content QA roles. Most entry-level proofreading positions commonly screen at 75-80%.
1 false positive means you flagged one word as an error when it was actually correct. In professional settings, false positives waste the writer's time and reduce editor credibility. Aim for zero.
2:45 completion time is within normal range. Speed matters less than accuracy in proofreading — thoroughness is commonly valued more than raw speed. Multiple slower passes commonly outperform one fast scan.
their/there/they're, affect/effect, it's/its, your/you're — these account for the most commonly missed errors in grammar proofreading tests.
Reading each sentence in reverse order forces your brain to focus on individual words rather than meaning — catching spelling errors your brain would otherwise autocorrect.
Before flagging a word, ask: "Is this genuinely wrong, or does it just look unusual?" Re-read the full sentence to confirm context before marking an error.
First pass: scan for spelling and capitalisation. Second pass: check grammar and punctuation. Separating error types improves detection rate significantly.
What detection rate do employers commonly screen for?
Most entry-level content QA and proofreading roles commonly require 75-80% detection rate. Senior editorial positions may require 90%+ with near-zero false positives. Publishing houses commonly set the highest thresholds.
Do false positives count against my score?
Yes. In professional proofreading, flagging correct text as errors wastes the writer's revision time and reduces trust in your edits. Most screening tests penalise false positives as heavily as missed errors.
Is grammar proofreading the same as copy editing?
Not exactly. Proofreading focuses on catching errors — spelling, grammar, punctuation. Copy editing also involves rewriting for clarity, consistency, and style. Proofreading is commonly the final check before publication.
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