An author indict is an argumentative tactic, most common in U.S. policy debate, Lincoln-Douglas, and public forum formats, in which a debater attacks the source of an opponent's evidence rather than (or in addition to) the substantive claim. The goal is to reduce the weight a judge gives to that card by showing the author is biased, unqualified, ideologically motivated, methodologically unsound, or has been discredited by other scholars.
Typical grounds for an author indict include:
- Funding or affiliation bias — e.g., the author works for an industry-funded think tank or advocacy group with a stake in the conclusion.
- Credential mismatch — the author writes outside their field of expertise.
- Methodological critique — peers have shown the author's data or sampling is flawed.
- Track record — the author has made repeatedly falsified predictions.
- Ideological framing — the author is so committed to a worldview that their analysis is non-falsifiable.
A well-executed indict pairs a specific claim about the author with its own evidence: a counter-card from a credible critic, a retraction, or a peer-reviewed rebuttal. Bare assertions ("they're biased") rarely persuade experienced judges.
Author indicts are distinct from card indicts, which target the specific quotation (e.g., power-tagging, ellipses hiding qualifiers, or quoting out of context), and from methodology indicts, which target a study's design. In practice debaters often combine all three.
Critics argue the tactic can devolve into ad hominem and crowd out substantive engagement, while defenders note that in an evidence-heavy activity, source quality is itself a substantive question. Many judges apply a comparative standard: an indict matters most when both sides cite roughly equivalent claims, and the question becomes whose author is more qualified or less compromised. In Model UN, the analogous move appears when delegates challenge the sourcing behind a working paper's statistics or a chair's background guide citations.
Example
In a 2023 collegiate policy round on climate adaptation, the negative team ran an author indict against an affirmative card from a fossil-fuel-funded researcher, citing a peer-reviewed critique of his methodology to lower the evidence's weight with the judge.
Frequently asked questions
Not necessarily. An ad hominem dismisses an argument purely because of who made it; a proper author indict provides evidence that specific traits of the author (bias, lack of credentials, discredited methods) undermine the reliability of their claim.
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