Alex Edmans, author of May Contain Lies, delves into how confirmation bias and belief polarization skew our perceptions, offering tips for parents to help their teenagers navigate misinformation and think critically.

If you've enjoyed Talking to Teens, we'd love if you could leave us a five-star rating, and if you have time, a review! 

Full Show Notes


In today's digital world, misinformation spreads faster than ever. Even as adults, we often find ourselves believing things that aren't true or are more nuanced than we think. The issue becomes even more critical when considering how we raise teenagers to be discerning and truth-seeking individuals.

How do we guide teens to differentiate fact from fiction in a sea of misleading information? How can we teach them to critically evaluate the plethora of claims they encounter daily—whether in social media, news, or even school? The ability to critically question and analyze data is a vital skill, and it’s more crucial now than ever.

To delve into the complexities of misinformation and how to tackle it, we're speaking with Alex Edmans, a professor of finance at London Business School. Alex's TED Talk, "What to Trust in a Post-Truth World," has resonated with millions, and his book, May Contain Lies, explores how biases impact our understanding and decision-making processes. With a keen focus on both finance and everyday life, Alex offers deep insights and practical advice on how to navigate a world filled with skewed information.

Understanding Confirmation Bias

Confirmation bias is a significant issue that affects how we process information. Alex highlights that we often accept information that aligns with our pre-existing beliefs uncritically, while scrutinizing information that contradicts our views. This is prevalent not just in finance and economics, Alex's fields of expertise, but also in everyday topics like parenting and healthcare.

For instance, Alex describes how widely accepted recommendations like exclusive breastfeeding may not be as beneficial as we think. While these claims are backed by reputable sources like the World Health Organization, they may overlook other contributing factors like socio-economic status and family support systems. By critically examining the research and understanding its context, we can make more informed decisions and avoid unnecessary guilt.

Tackling Black and White Thinking

Another prevalent bias Alex addresses is black and white thinking, where we categorize things as entirely good or bad with no gray areas. This kind of thinking is aided by simple, extreme messages that go viral on social media but often lack nuance. Alex illustrates this with the example of the Atkins diet, which gained popularity for its extreme stance on carbohydrates, even though it oversimplifies the role of carbs in a balanced diet.

For parents, understanding and combating these biases can help in guiding teenagers to see beyond black and white categorizations. Encouraging them to reason through their beliefs and understand the nuances can foster more critical and balanced thinking.

Solutions: The Ladder of Misargument

To help teenagers and parents alike navigate misinformation, Alex introduces the "Ladder of Misargument," a framework that breaks down common types of misinformation into four categories:

A statement is not a fact: Understand the context and accuracy of the information.Facts are not data: Ensure the facts are representative and not isolated.Data is not evidence: Look for causation, not just correlation.Evidence is not proof: Recognize that evidence may not be universal or applicable in all contexts.

Creating a Culture of Inquiry and Dialogue

Encouraging skeptical thinking in teenagers isn't just about teaching them to question authority but creating a culture where it's safe to ask questions and express doubts. Alex discusses how a high-power hierarchy can stifle honest communication and the flow of ideas. By reducing hierarchical barriers and fostering open dialogue, whether in families or workplaces, we can create environments where critical thinking thrives.


Parents can also model this behavior by openly discussing their thought processes and demonstrating how to critically analyze information. Encouraging teenagers to explain their viewpoints in detail can help them see the limitations of their own understanding and foster a habit of thorough investigation.

In the Episode…

Alex shares a wealth of insights on how to cultivate critical thinking and avoid common pitfalls of misinformation. Tune in to learn about:

How sports results can mysteriously affect the stock marketThe importance of asking detailed questions and listeningWays to foster healthy debate within familiesHow to identify and mitigate common biases in everyday decisions

If you enjoyed this week’s episode, you can find more from Alex on his website, alexedmans.com, or follow him on LinkedIn under the username A Edmans. Don’t forget to share and subscribe, and we’ll see you next week!


Follow us on Social Media! We're @talkingtoteens on Instagram and TikTok