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Predictably Irrational: Our Effort to Understand Human Behavior
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Predictably Irrational: Our Effort to Understand Human Behavior

Author: Ross Miller

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The human brain works in mysterious ways, and not always in the ways we think it does. We do strange things for the unknown reasons and we do common things often without thought. As a result, we are often unaware of how impulsive and predictable we can be. We often fail to think on the reasons that are behind our actions.

In this podcast, students from a Japanese university explore their own understanding of these issues and hopefully, provide the listener with some insight into how our brains work and how to be more aware of our own thinking.
37 Episodes
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Logical Fallacies

Logical Fallacies

2025-01-2813:15

For our final episode of Season 3, we’re diving into Logical Fallacies—those deceptive thinking traps that can undermine even our most well-reasoned arguments. From slippery slopes to false dilemmas, our student presenters will break down common fallacies and share insights from their research on how these errors affect decision-making and communication. Thanks for joining us this season! We will be back with more episodes in January 2026!
In this episode, we’re exploring Emotional Decision-Making in Hot and Cold States, inspired by Dan Ariely’s work in Predictably Irrational. How do our choices shift when we’re calm and rational versus when we’re overwhelmed by emotion? Our student presenters will share findings from their own study, revealing how these contrasting emotional states influence decision-making in everyday life.
Procrastination

Procrastination

2025-01-2809:57

In this episode, we’re tackling the all-too-relatable topic of Procrastination, inspired by Dan Ariely’s insights from Predictably Irrational. Why do we often delay important tasks, even when we know better? Our student presenters will share findings from their own study, shedding light on the psychological forces behind procrastination and strategies to overcome it. Stay with us for an insightful and motivating discussion!
Power of Price

Power of Price

2025-01-2820:06

In this episode, we’re exploring the Power of Price, inspired by Dan Ariely’s insights from Predictably Irrational. How does the price of something influence not just our willingness to pay but our perception of its quality and effectiveness? Our student presenters will share findings from their own study, uncovering how pricing impacts behavior and expectations in surprising ways. How much is it worth to you to learn about the Power of Price!?!
Cost of 0

Cost of 0

2025-01-2821:38

In this episode, we’re diving into the compelling concept of the Cost of Zero, inspired by Dan Ariely’s work in Predictably Irrational. Why does “free” have such a powerful hold over our choices, even when it’s not the best option? Our student presenters will share findings from their own study, revealing how the allure of zero cost influences decision-making in surprising ways. Stick around for a thought-provoking discussion!
Common Biases

Common Biases

2025-01-2814:05

In this episode, we’re exploring Common Biases, inspired by Dan Ariely’s insights from Predictably Irrational. From confirmation bias to anchoring, these mental shortcuts often lead us astray without us even realizing it. Our student presenters will share findings from their own study, shedding light on how these biases affect everyday judgments and decisions. Stay with us for a fascinating look at the quirks of the human mind!
In this episode, we’re tackling the intriguing topic of Our Character: Honesty and Dishonesty, inspired by Dan Ariely’s insights from Predictably Irrational. Why do we sometimes bend the truth—or stay honest even when we could get away with a lie? Our student presenters will share findings from their own study exploring how different situations influence honest and dishonest behavior. Get ready for an eye-opening conversation about the surprising forces that shape our moral choices!
Effect of Expectations

Effect of Expectations

2025-01-2815:03

In this episode, we’re diving into the fascinating concept of the Effect of Expectations, inspired by Dan Ariely’s work in Predictably Irrational. Expectations have a powerful impact on how we perceive experiences, from the taste of food to the success of learning outcomes. Today, our student presenters will share their research findings on how expectations shape behavior and perceptions in a practical study they conducted. We think you will enjoy this thought-provoking discussion!
In today’s episode, we’re exploring Dan Ariely’s concept of relativity, as discussed in his book Predictably Irrational. Relativity helps explain why our decisions are often influenced by comparisons rather than absolute values. To bring this idea to life, our student presenters will share findings from their own study, where they tested how relativity affects decision-making in a real-world context. Get ready for an engaging mix of theory and practice!
24Wa students Masaki, Minori, and Akari introduce the idea of Social Norms vs. Market Norms. They also go over the results of a survey that included 100 participants. If you just want the audio version, check out our podcast on Spotify. Watch the video of this report on YouTube.
Predictably Irrational

Predictably Irrational

2024-01-3113:28

In this episode, Riko and Ryota talked about irrationality, social norms and market norms, and logical fallacies. Human beings tend to compare, they use social norms and market norms in different purposes, and they will obey themselves if there are some praises for them. Human beings sometimes use these how to think or behavior by mistake, which may cause some serios problems. However, there are some solutions to solve the problems and we will indicate them. We hope you enjoy this final episode of Season 2.
Ryoki, Kanta, and Kairi are talking about Straw-man Fallacy, Hasty Generalization, Anecdotal Evidence Fallacy, and Burden of Proof Fallacy. We will explain each fallacy and explain how to avoid it. We conducted our study in one of the four fallacies: "Have you ever asked your parents to buy something by lying to them, saying that someone else had it too?'' We will explain based on" Is there anything that happens?'' In this podcast, you will be able to hear and learn about the fallacy that is lurking around you.
Daito, Kyoka, Maina and Kohei explain the four human irrationalities: Base Rate Fallacy, Cognitive Dissonance, Commitment Bias, and Correlation/Causation Fallacy. This content is related to the contradictions between behavior and thought, as well as the handling of information. By understanding these, you can comprehend and confront aspects of yourself that you may not have been aware of before. This knowledge enables self-reflection, providing insights into one's own characteristics. 
In this episode, Haruka, Mayu, Shun, and Ibuki explore the captivating biases of the placebo effect, false memory, blind spot bias, and confirmation bias. Delving into Dan Ariely's 'Predictably Irrational,' we dissect these intriguing cognitive quirks, shedding light on their impact on decision-making. A captivating experiment reveals the subtle manifestations of these biases. Join us for a conclusion that emphasizes the importance of recognizing and navigating these cognitive intricacies.
Mona, Mylinh and Moe introduce cognitive biases and logical fallacies in the following sequence, Availability Heuristic, Barnum Effect, Automation Bias, and Groupthink. We start with the introduction of our podcast. For each of them, we talked about definitions, examples, how we can apply in real life and so on. We conduct a questionnaire on psychological phenomenon of bias, Groupthink and we talked about what questions we have set and what we learned from it in our talk. The last part is the conclusion of it and the purpose for our talk.
A Calm Way of Life

A Calm Way of Life

2024-01-2814:42

Masami, Haruto, Yuuta, and Momiji talk about several chapters from Predictably Irrational. The first topic is about anchoring. We will discuss how the information initially presented can influence subsequent judgments and decisions. The next topic is about zero cost. We will talk about people's psychology and situations when they see the words zero = free. Finally, we will discuss how emotions change human behavior. We will discuss how human emotions influence decision-making and judgment.
Takayasu, Harue, and Naoto help us understand confirmation bias. The way to counter confirmation bias is to listen to a third party's opinion. That person also has preconceived notions, but hearing an opinion that is different from yours can help you think about things from a different perspective. What you need to know about cognitive dissonance and confirmation bias is to train your mind. By doing so, you will not be involved in an accident.
Honomi, Wakana, and Naoki talk about their experiences with and surveys about our habits of making choices.
About Our Character

About Our Character

2024-01-2710:06

Yuta, Shinnosuke and Koki talk about honesty and the human character.
Suzuha, Momoka, and Jinichiro talk about the high price ownership. It means feeling the disadvantages of losing what you currently have and changing the environment are greater than the benefits of gaining new things. It related psychology of attachment to one's belongings. We conducted a survey and summarized what we learned from the results. The high price ownership can prevent us from making our lives better We think understanding about the high price ownership is help your life. Our podcast explains this reason. 
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