Your teen says they signed up for Lincoln-Douglas and then rattles off a string of words: value, criterion, constructive, cross-ex. You nod, and then you realize you cannot tell whether they are ready for their first round.
Lincoln-Douglas (LD) is one of the debate events run by the National Speech and Debate Association (NSDA). It is a one-on-one format, which means no partner to lean on. This guide covers how a round works, the two terms that confuse most beginners, and how to help your teen practice at home.
What Lincoln-Douglas Debate Is
In LD, one student debates another on a topic provided by the NSDA. The NSDA describes the event as a "values" debate, because many topics ask about morality, justice and ethics. Past topics have ranged from individual freedom versus the collective good to economic development versus environmental protection. This fall's topic, whether outer space colonization is a moral imperative, is covered in our guide to the 2026 NSDA debate topics.
One student argues the affirmative, which supports the resolution. The other argues the negative, which opposes it. Students can use evidence they gathered before the round, but they cannot use the internet during it. A full round runs roughly 45 minutes according to the NSDA.
How a Round Runs
The standard speech order is 6, 3, 7, 3, 4, 6, 3 minutes:
1. Affirmative Constructive, 6 minutes. The affirmative presents their case. 2. Cross-examination, 3 minutes. The negative asks the affirmative questions. 3. Negative Constructive, 7 minutes. The negative answers the affirmative case and presents their own. 4. Cross-examination, 3 minutes. The affirmative questions the negative. 5. First Affirmative Rebuttal, 4 minutes. 6. Negative Rebuttal, 6 minutes. 7. Second Affirmative Rebuttal, 3 minutes.
Each debater also gets 4 minutes of preparation time to use however they like across the round. That adds up to 13 minutes of speaking for each side. Leagues and tournaments can adjust these details, so check the tournament invitation before the first round.
The Two Words That Confuse Beginners
Most LD cases are built on a value and a criterion. Together they are called the framework.
A value is the broad ideal a debater says the resolution should serve, such as justice, liberty or human dignity. A criterion is the standard for measuring whether that value is being achieved. It gives the judge a way to decide which debater did the better job.
Here is a simple example from a different topic. Say the resolution is that a school should require community service. An affirmative debater might choose the value of "community responsibility" and the criterion of "whether the policy increases students' participation in their communities." Every argument that follows has to connect back to that standard. A negative debater can accept the framework and argue the policy fails it, or offer a different framework and argue the judge should use theirs.
Students who skip this step often end up with a list of reasons that never add up to a winner. The framework is what turns a list into an argument.
Four Ways to Help at Home
Play the judge for a ten-minute mini round. Give your teen a small values question, such as whether honesty matters more than kindness. Have them speak for two minutes, then ask one question and let them answer. Skip the verdict until they have made the case.
Ask "so what?" after every point. If your teen says space colonization would give humanity a backup plan, ask why that makes it a moral duty. LD rewards students who connect each claim to their value, and the question trains that habit.
Practice cross-examination in both directions. Cross-ex is three minutes of questions only. Practice asking short, specific questions, and practice answering in one or two sentences without volunteering extra information.
Run the clock. Time a six-minute affirmative speech out loud. A case that reads well on the page often runs long or short once spoken.
LD styles also vary by region and circuit, with some emphasizing plain-language value debate and others using technical theory. Ask your teen's coach or club advisor which style their league uses so practice matches it.
How TalkMaze Fits
TalkMaze offers 1-on-1 online public speaking and debate coaching for students ages 5 to 17. LD is a one-person event, so the weekly work with a coach can be a student's main chance to hear a full case aloud and get specific feedback before a tournament. A coach can check whether the value and criterion hold the case together, run timed speeches and cross-examination, and flag where the delivery speeds up. Our debate program coaches students in the format they actually compete in. Founder Ghalia Aamer is a national debate competitor, TEDx speaker and Princess Diana Award recipient, and every coach trains on the method she built for structuring an argument. If this is your teen's first tournament, our guide to preparing for a first speech and debate tournament covers what the day looks like.
Frequently Asked Questions
How long is a Lincoln-Douglas debate round?
A Lincoln-Douglas round runs roughly 45 minutes according to the NSDA, including speeches, cross-examination and preparation time. The standard speech order is 6, 3, 7, 3, 4, 6 and 3 minutes, and each debater has 4 minutes of preparation time.
What is a value in Lincoln-Douglas debate?
A value is the broad ideal a debater argues the resolution should serve, such as justice, liberty or human dignity. It is the foundation of the case, and every argument is meant to connect back to it.
What is a criterion in Lincoln-Douglas debate?
A criterion is the standard used to measure whether the value is being achieved. It gives the judge a way to compare the two debaters, so a clear criterion makes a case much easier to follow.
Is Lincoln-Douglas a team event?
No. Lincoln-Douglas is a one-on-one format, with one debater on each side. Public Forum, by comparison, is a two-person team event.
Can my teen use the internet during a round?
No. The NSDA says students may use evidence they gathered before the debate but may not use the internet in round.
Can my teen start Lincoln-Douglas as a beginner?
Yes. Many students begin LD with no experience, and the NSDA offers a novice topic for newer debaters in some leagues. Ask your teen's coach whether their league runs a novice division.
The Bottom Line
A Lincoln-Douglas case holds together when the value and criterion are clear and every point connects back to them. If your teen wants a coach to build their case, run timed rounds and practice cross-examination before the next tournament, book a free assessment and we will start there.
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