Boosters — Interactive Module
Diagnose · Coach · Practice · Apply. Boosters close down alternatives and assert confidence in a claim — the counterweight to hedges.
Four key functions of boosters in academic writing
Boosters signal that the writer is confident enough in a claim to close down alternatives, rather than leaving room for doubt. Used well, they mark exactly where the evidence is strongest; overused, they read as overclaiming and erode credibility. Each function is colour-coded and tiered by academic value.
Certainty verbs
Report findings as settled, not tentative.
Strong verb for a result the evidence directly supports.
- MedialThe results demonstrate that feedback timing affects revision quality.
Neutral, high-frequency certainty verb; safe default.
- MedialThe analysis shows a consistent decline in hedging density across drafts.
Implies the point is now settled for the remainder of the argument.
- MedialThis study establishes a reliable link between genre and marker density.
Best when the finding matches a prior prediction or prior study.
- MedialThese findings confirm the pattern reported in earlier corpus studies.
Suggests the finding was previously hidden or unexpected.
- MedialCloser analysis reveals that the effect is limited to novice writers.
Claims logical certainty that single studies rarely warrant.
- MedialThis experiment proves that explicit instruction is always superior.
Choose the right marker
- demonstrateestablishwhen your own data directly supports the claim.
- confirmwhen your finding matches a prior prediction or study.
- showas a safe, neutral default for reporting results.
- prove— use 'demonstrate' or 'provide strong evidence that' instead of 'prove'.
Booster modals
Use modal verbs to assert rather than qualify.
Rules out an alternative explanation directly and economically.
- MedialThe difference cannot be attributed to sampling error alone.
Emphatic auxiliary that reasserts a claim against an implied doubt.
- MedialRegister does affect the frequency of booster use in student writing.
Predicts with full confidence; reserve for well-supported generalisations.
- MedialIncreasing sample size will reduce the variance of the estimate.
Logical necessity — the conclusion follows inevitably from the premises.
- MedialIf the assumption holds, the observed correlation must reflect a causal link.
Strong future prediction; use only with robust supporting evidence.
- MedialUnder these conditions, the intervention is certain to raise completion rates.
Universal quantifier removes any exception, which few findings can bear.
- MedialExplicit hedging instruction will always improve academic writing quality.
Choose the right marker
- cannotto rule out an alternative explanation economically.
- mustfor a conclusion that follows by logical necessity from stated premises.
- willfor a well-supported prediction, not a hopeful guess.
- will always— replace with 'tends to' or 'is likely to', or narrow the claim's scope.
Emphatic adverbs
Intensify a claim without adding evidence.
Confirms and strengthens a preceding claim rather than repeating it.
- InitialIndeed, the pattern holds across all three genres examined.
Introduces a stronger claim than the reader might expect.
- InitialIn fact, novice writers use more boosters than experts in this corpus.
Signals the writer regards the point as requiring no further defence.
- InitialClearly, the two groups differ in their use of self-mention.
Useful for conceding a minor point before asserting the main one strongly.
- InitialCertainly, further replication is needed, but the trend is unambiguous.
More conversational than 'clearly' or 'indeed'; use sparingly in formal prose.
- MedialThe revised instrument definitely improved inter-rater agreement.
Can read as dismissive of the reader and rarely adds information.
- InitialObviously, this is the only possible interpretation of the data.
Choose the right marker
- indeedin factto strengthen a claim the evidence already supports.
- certainlyto concede a small point before asserting the main one firmly.
- clearlysparingly, only when the point truly needs no further defence.
- obviously— delete it, or replace with 'indeed' if the confirmation is genuinely warranted.
Fact-framing
Present a claim as an established fact.
Presupposes truth; use only for claims that are genuinely uncontested.
- InitialThe fact that all four coders agreed strengthens the reliability of the scheme.
Appropriate for citing settled findings from prior literature.
- InitialIt is well established that L2 writers underuse hedging devices.
Frames the claim as available to any careful reader, not just the writer.
- InitialIt is evident that feedback density decreases across successive drafts.
Strong framing device; reserve for the paper's central, best-supported claim.
- InitialThere is no doubt that genre shapes the distribution of stance markers.
Forecloses counterargument; pair with strong evidence, not assertion alone.
- InitialUndeniably, the intervention group outperformed the control on all measures.
Appeals to unverified consensus rather than to evidence.
- InitialEveryone agrees that this approach is the most effective one available.
Choose the right marker
- the fact thatonly for claims that are genuinely uncontested.
- it is well established thatto cite settled findings from the literature.
- there is no doubt thatfor the paper's single strongest, best-evidenced claim.
- everyone agrees that— cite the actual source of agreement, e.g. 'prior studies consistently report that'.
Booster load & the hedge–booster balance
A booster is a promise that the evidence can bear the full weight of the claim.
- Reserve strong boosters ('demonstrate', 'establish', 'there is no doubt that') for your best-supported claim, not every claim.
- Boosters work best paired with hedges elsewhere in the same paragraph — an unbroken run of boosters reads as overclaiming.
- Booster choice should track the strength of the evidence, not the writer's enthusiasm.
- 'Prove', 'obviously', and 'everyone agrees' assert certainty the evidence rarely supports in a single study.
- Universal quantifiers ('will always', 'in every case') remove exceptions that reviewers will immediately supply.
- A text with only boosters and no hedges reads as naïve rather than confident.
Front an adverb ('Indeed,' 'Certainly,') when boosting the sentence's whole claim.
Keep certainty verbs and modals inside the clause when the boost applies to a specific result, not the whole argument.