Cross-Examination Time

Cross-Examination Time (often shortened to "cross-ex" or "CX") is a structured questioning period built into many competitive debate formats. Unlike speeches, where one side presents arguments uninterrupted, cross-examination allows the opposing team to ask direct questions of the speaker who just finished, typically for a fixed duration (commonly three minutes in U.S. high school and college policy debate, and shorter in other formats).

The purpose is threefold: to clarify ambiguous claims made in the prior speech, to expose logical or evidentiary weaknesses in the opponent's case, and to set up arguments that the questioner's partner will develop in the next constructive or rebuttal speech. Answers given during cross-examination are considered binding admissions and can be quoted back later in the round.

In NSDA Policy Debate, each constructive speech is followed by a three-minute cross-examination. Lincoln-Douglas Debate uses a similar three-minute CX after each constructive. Public Forum Debate uses a variant called "crossfire," in which both sides question each other simultaneously rather than one asking and one answering. British Parliamentary and most Model UN formats do not have a dedicated CX period, though MUN moderated caucuses and points of information serve a loosely analogous function.

Etiquette norms are well established. The questioner controls the time and may politely cut off long-winded answers; the respondent must answer honestly but may decline to concede contested interpretations. Judges generally do not "flow" (record arguments from) cross-examination directly, but persuasive moments — a damaging concession, a refusal to defend a key claim — frequently appear in the rebuttal speeches that follow.

Strong cross-examination tends to be tightly scripted around two or three strategic objectives rather than scattershot. Common techniques include the funnel (broad question narrowing to a specific concession), the trap (asking a question whose answer harms either way), and clarification stacking (forcing the opponent to commit to definitions before the substantive debate continues).