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Critical Thinking Skills Debate Winners

Debate lessons improve critical thinking skills

© 2011 Gwen Dewar, Ph.D., all rights reserved

Kids benefit when we teach them critical thinking skills.

What’s the best way to do it?

Studies suggest that explicit lessons in logic and reasoning are effective, so much so that they may actually improve a child’s IQ.

But few kids encounter such lessons, even in high school.

Yes, students might pick up logical principles as they study mathematics or science. They are frequently asked to present arguments in the form of written essays. And, yes, these experiences can be helpful.

Experiments suggest that students are more likely to master a topic when they are forced to explain it to another person. And most of us have noticed that the act of writing can clarify our thoughts.

Writing can make us aware of gaps in our understanding. It can force is to notice gaps in our explanations. Missing information. Logical flaws. In principle, writing may encourage students to construct better arguments.

But it’s not clear how many kids improve their critical thinking skills through writing. Based on the studies I've seen, I don't think writing alone is very effective. 

Maybe that's because students lack the perspective to critique their own work.

Ask students to argue a case, and they might be pretty good at naming a few reasons in support of their argument. But they rarely consider counterarguments, disconfirming evidence, or the merits of the opposing view.

These are the points raised by researchers Deanna Khun and Amanda Powell. They think students need someone to argue against. They need an intelligent critic. A person to play Devil’s advocate.

And that’s where debate comes into it. Not the silly, sloppy, emotional exchanges that pass for debate on TV and the internet. But the real thing: Disciplined, logical, responsive, evidence-based argumentation with another person.

Should we be training kids in the art of debate? As Kuhn and Powell note, debate forces kids to consider two perspectives, not just their own. It encourages kids to anticipate objections to their arguments. To answer counterarguments. To weigh the evidence on both sides.

So the researchers designed and tested a 3-year debate curriculum on a group of lower income, American, middle school students.

Here's how.

The kids started the program when they were in the 6th grade. Forty-eight kids were assigned to a philosophy class that emphasized debate. A control group of 28 kids were assigned to attend a similar course that featured teacher-led discussion and essay writing, but lacked any training or practice in debate.

At the beginning of the study, kids were tested on their ability to reason about a controversial issue. Then the coursework begin: Two fifty-minute lessons each week.

What kids did in class

For kids in the debate-based course, lessons were organized around four controversial topics. Each topic took about 13 weeks to complete.

Teachers would begin each 13-week term by presenting a controversy—like euthanasia—and asking kids to take sides. Then the teams worked in groups to prepare for a debate.

Team members would spend several sessions building a case in support of their position. They’d think of reasons and evaluate them. They’d try to anticipate what the opposition would argue, and prepare counterarguments and rebuttals. Then they’d rehearse—pairing off with other members of their team holding mock debates on the computer, via software for instant messaging.

Why the computer? The researchers knew that adolescents were well-acquainted with instant messaging, and the typed dialogs gave researchers a written record of the students’ reasoning. Kuhn and Powell also thought that a written dialog would encourage kids to reflect.

Each term culminated in a showdown between teams. The debate was led by two spokespeople—one elected from each team—who could confer with their teammates for help. Like the practice runs, the real debate took place on the computer.

What kids learned

At the end of each school year, kids were tested on their reasoning abilities. Their scores were compared with the scores of the control group---kids who has spent the year discussing and writing about similar controversial issues, but without any practice in debate.

How did things turn out?

When asked to write essays about a new controversy, the kids with the debating experience showed more sophistication.

Debate-trained students submitted more dual-perspective arguments--i.e., arguments that mentioned the claims of opposing points of view.

At the end of the third year, students in the debate group went even further: They submitted essays that discussed the costs and benefits of each position.

Kuhn and Powell call this an integrative perspective, and it was significantly less common among kids in the control group.

The debate kids also distinguished themselves in another way. They seemed better at figuring out what new data would help resolve the controversy.

Researchers asked kids to consider their need for evidence:

"Are there any questions you would want to have answers to that would help you make your argument?"

The debate-trained kids came up with more such questions. In addition, their questions were more pertinent to forming a general judgment about the issue.

No quick fix

The debate program developed by Kuhn and Powell seems successful. But it’s no quick fix. And doing it right means getting the details right. For instance:

1. Kids didn’t begin the program with an appreciation for evidence. They had to be taught.

At the end of Year One, teachers started presenting students with questions that were pertinent to the debate. Questions like “How humanely are animals treated in laboratories?" or “Has animal research led to any cures?" In subsequent years, students were encouraged to generate and research their own questions. Gradually, kids began to see how important it was to answer these questions. But it took time and practice.

2. Kids were given explicit teacher feedback about the strength and weaknesses of their arguments.

For the final session of each term, teachers debriefed students, going over transcripts of the debate and creating a diagram that summarized what was effective or ineffective about each team’s presentation. Teams were rewarded points for good moves and demerits for bad moves—like unwarranted assumptions and unconnected responses. The points were tallied and the winning team was declared.

An investment worth making?

Did Kuhn and Powell create the optimal program? Perhaps not. This is only the first study of its kind to get published. More research should help us tease apart which aspects of the program were the most effective. But Kuhn and Powell have taken an important first step.

Meanwhile, they make a persuasive case for teaching debate.

Informal classroom discussion doesn't seem to be an especially effective way to foster critical thinking skills. And I suspect that debate lessons might help shrink the achievement gap between students of lower and higher socioeconomic status.

In many middle class families, parents attempt to mold behavior by reasoning with their kids. They encourage give and take. They explain the reasons for rules and invite kids to negotiate—as long as they can make persuasive, well-reasoned arguments. I remember one anthropologist’s quip that the American intelligentsia train their children to talk like lawyers.

Presumably, children of professional thinkers would profit from lessons in debate. But kids from backgrounds of lower socioeconomic status—where negotiation and debate are often discouraged—might profit even more.

So I’m inclined to think that adding debate to the curriculum is a good investment for society as a whole. We might be laying the foundation for a more enlightened culture, with better-informed voters, more rational jurors, and citizens more appreciative of science.


References: Debate improves critical thinking skills

Kuhn D and Powell A. 2011. Dialogic Argumentation as a Vehicle for Developing Young Adolescents’ Thinking. Psychological Science. March 21 [Epub ahead of print]

For references regarding the common practices of middle class parents, see my article about authoritative parenting.


Reasoning, research and even public speaking skills are just some of the positives behind learning how to be a great debater. From planning your argument (even if you don’t agree with it) to choosing your words wisely, debating will help you take on whatever life chooses to throw at you.

Debating is by no means the same as entering into a full-on argument. In fact, you will need to develop a succinct, effective argument, which will gain you support and kudos, rather than blindly attacking your opponent.

From Cicero to Churchill, history’s great debaters have helped shape the world we live in and resolve many of society’s issues. Here are 12 ways that debating can help you in your life for years to come.

1. Be a better critical thinker

While you might not debate on a day-to-day basis, chances are you will get involved in small disagreements and differences of opinion. Debating, instead of arguing, can help you defuse a rapidly escalating situation. Rather than raising your voice, take a step back and choose your words wisely.

Debating helps you to develop essential critical thinking skills – the ability to make reasoned and well thought out arguments in addition to questioning the evidence behind a particular stance or conclusion. Critical thinking will help you become curious about new ideas while also retaining a level of scepticism and building a healthy attitude to questioning. It will also help you to become more humble – well, you can’t be right all the time! 

2. Articulate your thoughts

Ever had that feeling when you just can’t get your words out quickly enough? Debating can help you become even better at explaining a whole variety of topics. From explaining complex mathematical equations to the plotline of your favourite book, debating helps you to identify your audience and choose the appropriate tone. Too formal a tone will only alienate you from your listeners, while being too relaxed might undermine your own arguments. The ability to articulate and plan your thoughts is key in debating, producing a well- planned out and sharp argument.

3. Education is key

In any debate the argument matters, even if you don’t agree with it on principle. The manner in which you deliver your winning speech is also incredibly important: keeping calm and maintaining eye contact are all proven as effective debating techniques. Last but not least is the method in which you put your debate together. Are your arguments coherent? Do they make sense?

A good debater will keep all of these in mind in addition to the core elements they have acquired through education (reading and finding sources, writing and drafting a speech, speaking confidently and being able to listen) – useful both inside and outside the classroom. 

4. Think on your feet

Think outside of the box, challenge your opponent and be ready to identify any loopholes in their counter-argument. The ability to think on your feet and respond to questions and comments is essential while debating – hesitating could cost you precious time and points. In fact, the ability to think on your feet could stand you in good stead in any situation which life throws at you, when time is of the essence and a decision needs to be made fast.

5. Conflict resolution

A good debater will remain focused and won’t stray from the issue they are discussing. Just like any successful orator, remember who it is you want to keep on side, and present a personable argument – you will appear instantly much more amenable and likeable.

Knowing how to lose graciously and accept your failings are important skills, both in debating and during everyday life. This will also help resolve any conflicts before they have a chance to begin. So, accept any criticism that comes your way. It will make you a much more polished and proficient speaker – and human being – in the long term.

6. Show some empathy

A successful speaker will always maintain a degree of empathy while debating – you might not believe in what you have been assigned, but empathy will help you understand and accept the beliefs of others. Nobody is asking you to agree with the other party’s argument, but empathy is an important life skill, helping you to improve your relations on a personal and professional level.

Picture courtesy of AZ Quotes

7. Keep your emotions in check

A good debater will also remember to retain an element of poise and composure – addressing the issue rather than getting carried away emotionally. In fact, managing your emotions will not only stand you in good stead while debating. It is no easy skill to manage, but will gain you respect in every walk of life.

8. Construct meaning out of complex situations

Debating will also help you learn how to construct meaning out of, what are usually, rather complex topics. From world peace to banning nuclear energy, taking the time to research the subject and carefully construct the points you want to make will help you construct a better argument.

Finding solutions to a previous problem and compiling creative solutions and ideas are also key skills for any good debater. Thinking outside of the box and making the best of a bad situation are excellent traits to have, meaning you are prepared and ready to take on any challenge, no matter what the size.

9. Presentation skills

Presentation plays a crucial part in how others perceive you as an individual, and more importantly, as competition.

Consider what you are going to say, speak slowly and with clear enunciation. It will make for better reasoning and a clearer understanding of what you say. Good presentation skills will earn you instant respect both while debating and in future situations.

10. Confidence boost

Good presentation skills will also help boost confidence – helping you to shine at interviews or work related events. If you are confident you feel more able to take on increased responsibility and even take some risks – helping you to stand out as an individual. A polished overall presentation and confident speaking manner will make you a memorable individual.

11. Be more socially conscious

Debating is a skill which requires any individual to be much more politically and socially aware of current affairs. In fact, debating also requires you to address a whole range of diverse social issues and viewpoints. Being more socially and politically aware is not only important while debating but it will also ensure that you connect and relate better to others, both socially and in the workplace.

via GIPHY

12. An expanded worldview

Debating not only touches on political and social topics, it can also help individuals acquire a totally different worldview too. Debating means students study topics that they wouldn’t normally consider, meaning they have a deeper understanding of the society and the world which we live in. An expanded worldview also encourages students to be proud of their talents and achievements, in addition to being more appreciative of the opportunities that await them.

Being more conscious of the world we live in will stand you in good stead for the future – even if you don’t win the debate this time.

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This article was sponsored by St John’s-Ravenscourt School. Over the last 28 years, students at the Canadian school have been named World Debating Champion on 14 occasions. Students of all ages and skill levels practice various forms of debate and travel across the country and the world competing.

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